Implement C23 <stdbit.h>

C23 adds a header <stdbit.h> with various functions and type-generic
macros for bit-manipulation of unsigned integers (plus macro defines
related to endianness).  Implement this header for glibc.

The functions have both inline definitions in the header (referenced
by macros defined in the header) and copies with external linkage in
the library (which are implemented in terms of those macros to avoid
duplication).  They are documented in the glibc manual.  Tests, as
well as verifying results for various inputs (of both the macros and
the out-of-line functions), verify the types of those results (which
showed up a bug in an earlier version with the type-generic macro
stdc_has_single_bit wrongly returning a promoted type), that the
macros can be used at top level in a source file (so don't use ({})),
that they evaluate their arguments exactly once, and that the macros
for the type-specific functions have the expected implicit conversions
to the relevant argument type.

Jakub previously referred to -Wconversion warnings in type-generic
macros, so I've included a test with -Wconversion (but the only
warnings I saw and fixed from that test were actually in inline
functions in the <stdbit.h> header - not anything coming from use of
the type-generic macros themselves).

This implementation of the type-generic macros does not handle
unsigned __int128, or unsigned _BitInt types with a width other than
that of a standard integer type (and C23 doesn't require the header to
handle such types either).  Support for those types, using the new
type-generic built-in functions Jakub's added for GCC 14, can
reasonably be added in a followup (along of course with associated
tests).

This implementation doesn't do anything special to handle C++, or have
any tests of functionality in C++ beyond the existing tests that all
headers can be compiled in C++ code; it's not clear exactly what form
this header should take in C++, but probably not one using macros.

DIS ballot comment AT-107 asks for the word "count" to be added to the
names of the stdc_leading_zeros, stdc_leading_ones,
stdc_trailing_zeros and stdc_trailing_ones functions and macros.  I
don't think it's likely to be accepted (accepting any technical
comments would mean having an FDIS ballot), but if it is accepted at
the WG14 meeting (22-26 January in Strasbourg, starting with DIS
ballot comment handling) then there would still be time to update
glibc for the renaming before the 2.39 release.

The new functions and header are placed in the stdlib/ directory in
glibc, rather than creating a new toplevel stdbit/ or putting them in
string/ alongside ffs.

Tested for x86_64 and x86.

---

Compared to the previous in-progress version posted, this has various
fixes from Jakub (as well as tests and documentation).

* Joseph Myers:

> DIS ballot comment AT-107 asks for the word "count" to be added to the
> names of the stdc_leading_zeros, stdc_leading_ones,
> stdc_trailing_zeros and stdc_trailing_ones functions and macros.  I
> don't think it's likely to be accepted (accepting any technical
> comments would mean having an FDIS ballot), but if it is accepted at
> the WG14 meeting (22-26 January in Strasbourg, starting with DIS
> ballot comment handling) then there would still be time to update
> glibc for the renaming before the 2.39 release.

We could add all the symbols to libc_nonshared.a at first if there is
some doubt about their names.

The reason for <bits/stdint-least.h> is not exactly clear to me.
Several of the new interfaces are only meaningful for integer types of
a fixed width.  Is this just something that happens to be in the
draft, that these types need to be defined by including <stdbit.h>?

> diff --git a/manual/stdbit.texi b/manual/stdbit.texi
> new file mode 100644
> index 0000000000..be6b870f76
> --- /dev/null
> +++ b/manual/stdbit.texi
> @@ -0,0 +1,179 @@
> +@node Bit Manipulation, Date and Time, Arithmetic, Top
> +@c %MENU% Bit manipulation
> +@chapter Bit Manipulation
> +
> +This chapter contains information about functions for manipulating the
> +bits of unsigned integers.  These functions are from ISO C2X and are
> +declared in the header file @file{stdbit.h}.
> +
> +Each function family has functions for the types @code{unsigned char},
> +@code{unsigned short}, @code{unsigned int}, @code{unsigned long int}
> +and @code{unsigned long long int}.  In addition, there is a
> +corresponding type-generic macro (not listed below), named the same as
> +the functions but without any suffix such as @samp{_uc}.

Reading the implementation, it seems that the type-generic version is
only defined for unsigned integer types of sizes 1, 2, 4, 8 bytes.
Would it make sense to add that to the documentation?

How is this supposed to interact with the _BitInt types?

I spot-checked the implementation and it looks okay to me.

On Thu, 28 Dec 2023, Florian Weimer wrote:

> * Joseph Myers:
> 
> > DIS ballot comment AT-107 asks for the word "count" to be added to the
> > names of the stdc_leading_zeros, stdc_leading_ones,
> > stdc_trailing_zeros and stdc_trailing_ones functions and macros.  I
> > don't think it's likely to be accepted (accepting any technical
> > comments would mean having an FDIS ballot), but if it is accepted at
> > the WG14 meeting (22-26 January in Strasbourg, starting with DIS
> > ballot comment handling) then there would still be time to update
> > glibc for the renaming before the 2.39 release.
> 
> We could add all the symbols to libc_nonshared.a at first if there is
> some doubt about their names.

I think adding with the expected names and location - shared libc - is 
better, with the option of changing them if WG14 unexpectedly accepts that 
technical comment.  (The other technical comment on the DIS ballot - 
CA1-039 requesting adding back trigraphs to the language - is even less 
likely to be accepted.)

> The reason for <bits/stdint-least.h> is not exactly clear to me.
> Several of the new interfaces are only meaningful for integer types of
> a fixed width.  Is this just something that happens to be in the
> draft, that these types need to be defined by including <stdbit.h>?

Earlier drafts of the <stdbit.h> proposal included additional interfaces 
for loading and storing integers with given endianness, byte-order 
reversal and integer rotate, which didn't make it into C23.

I think the reason for "This header makes available the size_t type name 
(7.21) and any uintN_t, intN_t, uint_leastN_t, or int_leastN_t type names 
defined by the implementation (7.22)." probably is that those types were 
needed for the interfaces that didn't make it into C23 (where the only 
remaining piece related to endianness that did make it into C23 was the 
__STDC_ENDIAN_*__ macros).

Defining those types in the header, though not actually used by any 
interfaces in the header in C23, seems fairly harmless, and I expect that 
subsequent versions of the standard *will* have further interfaces that do 
make use of those types.

> Reading the implementation, it seems that the type-generic version is
> only defined for unsigned integer types of sizes 1, 2, 4, 8 bytes.
> Would it make sense to add that to the documentation?

How about "The type-generic macro can only be used with an argument of an 
unsigned integer type with the same width as the parameter of one of the 
functions."?

> How is this supposed to interact with the _BitInt types?

In C23, the arguments to the type generic macros must have a type that is 
a "standard unsigned integer type, excluding bool; extended unsigned 
integer type; or, bit-precise unsigned integer type whose width matches a 
standard or extended integer type, excluding bool.".  That is, passing a 
_BitInt argument with any other width is undefined behavior in C23.  It's 
likely that support for _BitInt in these macros, and quite likely in other 
places in the standard as well, will be added in future versions of the 
standard.

Jakub has defined built-in functions for all the type-generic macros in 
GCC 14 that can be used to support unsigned _BitInt types (and unsigned 
__int128).  I think it's appropriate to add that support in a followup 
patch (of which test coverage would probably take up the bulk of the 
patch) rather than in the initial <stdbit.h> support, considering that 
this initial patch itself is 8000 lines.

* Joseph Myers:

> On Thu, 28 Dec 2023, Florian Weimer wrote:
>
>> * Joseph Myers:
>> 
>> > DIS ballot comment AT-107 asks for the word "count" to be added to the
>> > names of the stdc_leading_zeros, stdc_leading_ones,
>> > stdc_trailing_zeros and stdc_trailing_ones functions and macros.  I
>> > don't think it's likely to be accepted (accepting any technical
>> > comments would mean having an FDIS ballot), but if it is accepted at
>> > the WG14 meeting (22-26 January in Strasbourg, starting with DIS
>> > ballot comment handling) then there would still be time to update
>> > glibc for the renaming before the 2.39 release.
>> 
>> We could add all the symbols to libc_nonshared.a at first if there is
>> some doubt about their names.
>
> I think adding with the expected names and location - shared libc - is 
> better, with the option of changing them if WG14 unexpectedly accepts that 
> technical comment.  (The other technical comment on the DIS ballot - 
> CA1-039 requesting adding back trigraphs to the language - is even less 
> likely to be accepted.)

Fair enough.  Let's hope that the naming matter is settled and
publicly disclosed in time for the release.

>> The reason for <bits/stdint-least.h> is not exactly clear to me.
>> Several of the new interfaces are only meaningful for integer types of
>> a fixed width.  Is this just something that happens to be in the
>> draft, that these types need to be defined by including <stdbit.h>?
>
> Earlier drafts of the <stdbit.h> proposal included additional interfaces 
> for loading and storing integers with given endianness, byte-order 
> reversal and integer rotate, which didn't make it into C23.

I see.  Defining the types is just odd, but should be harmless, as you
indicate.

>> Reading the implementation, it seems that the type-generic version is
>> only defined for unsigned integer types of sizes 1, 2, 4, 8 bytes.
>> Would it make sense to add that to the documentation?
>
> How about "The type-generic macro can only be used with an argument of an 
> unsigned integer type with the same width as the parameter of one of the 
> functions."?

I would recommend to list the bit widths explicitly.

>> How is this supposed to interact with the _BitInt types?
>
> In C23, the arguments to the type generic macros must have a type that is 
> a "standard unsigned integer type, excluding bool; extended unsigned 
> integer type; or, bit-precise unsigned integer type whose width matches a 
> standard or extended integer type, excluding bool.".  That is, passing a 
> _BitInt argument with any other width is undefined behavior in C23.

So _BitInt(32) is a valid argument type, but _BitInt(24) is not?
Interesting.

On Fri, 29 Dec 2023, Florian Weimer wrote:

> > How about "The type-generic macro can only be used with an argument of an 
> > unsigned integer type with the same width as the parameter of one of the 
> > functions."?
> 
> I would recommend to list the bit widths explicitly.

I now have "The type-generic macro can only be used with an argument of an 
unsigned integer type with a width of 8, 16, 32 or 64 bits.".

(Of course, when _BitInt support is added in a followup, that statement 
can be removed.)

> >> How is this supposed to interact with the _BitInt types?
> >
> > In C23, the arguments to the type generic macros must have a type that is 
> > a "standard unsigned integer type, excluding bool; extended unsigned 
> > integer type; or, bit-precise unsigned integer type whose width matches a 
> > standard or extended integer type, excluding bool.".  That is, passing a 
> > _BitInt argument with any other width is undefined behavior in C23.
> 
> So _BitInt(32) is a valid argument type, but _BitInt(24) is not?
> Interesting.

Yes, that's the case in C23.

Future versions might well have more _BitInt support in areas such as the 
following (some of these had preliminary proposals that didn't get into 
C23, some didn't), if someone comes up with an appropriate design for 
language/library features (and especially if there's implementation 
experience):

* Explicit width-of operator.

* printf / scanf / string conversions.

* Some way for _Generic to handle _BitInt without listing each type 
individually.

* Some way for va_arg to handle _BitInt of runtime-determined width.

* stdbit.h, as discussed here.

* stdckdint.h (already fully supported in GCC's version).

On Wed, Dec 20, 2023 at 4:51 PM Joseph Myers <joseph@codesourcery.com> wrote:
>
> C23 adds a header <stdbit.h> with various functions and type-generic
> macros for bit-manipulation of unsigned integers (plus macro defines
> related to endianness).  Implement this header for glibc.
>
> The functions have both inline definitions in the header (referenced
> by macros defined in the header) and copies with external linkage in
> the library (which are implemented in terms of those macros to avoid
> duplication).  They are documented in the glibc manual.  Tests, as
> well as verifying results for various inputs (of both the macros and
> the out-of-line functions), verify the types of those results (which
> showed up a bug in an earlier version with the type-generic macro
> stdc_has_single_bit wrongly returning a promoted type), that the
> macros can be used at top level in a source file (so don't use ({})),
> that they evaluate their arguments exactly once, and that the macros
> for the type-specific functions have the expected implicit conversions
> to the relevant argument type.
>
> Jakub previously referred to -Wconversion warnings in type-generic
> macros, so I've included a test with -Wconversion (but the only
> warnings I saw and fixed from that test were actually in inline
> functions in the <stdbit.h> header - not anything coming from use of
> the type-generic macros themselves).
>
> This implementation of the type-generic macros does not handle
> unsigned __int128, or unsigned _BitInt types with a width other than
> that of a standard integer type (and C23 doesn't require the header to
> handle such types either).  Support for those types, using the new
> type-generic built-in functions Jakub's added for GCC 14, can
> reasonably be added in a followup (along of course with associated
> tests).
>
> This implementation doesn't do anything special to handle C++, or have
> any tests of functionality in C++ beyond the existing tests that all
> headers can be compiled in C++ code; it's not clear exactly what form
> this header should take in C++, but probably not one using macros.
>
> DIS ballot comment AT-107 asks for the word "count" to be added to the
> names of the stdc_leading_zeros, stdc_leading_ones,
> stdc_trailing_zeros and stdc_trailing_ones functions and macros.  I
> don't think it's likely to be accepted (accepting any technical
> comments would mean having an FDIS ballot), but if it is accepted at
> the WG14 meeting (22-26 January in Strasbourg, starting with DIS
> ballot comment handling) then there would still be time to update
> glibc for the renaming before the 2.39 release.
>
> The new functions and header are placed in the stdlib/ directory in
> glibc, rather than creating a new toplevel stdbit/ or putting them in
> string/ alongside ffs.
>
> Tested for x86_64 and x86.
>
> ---
>
> Compared to the previous in-progress version posted, this has various
> fixes from Jakub (as well as tests and documentation).
>
> diff --git a/NEWS b/NEWS
> index 3f0dee4fcc..ccce7765bf 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -43,6 +43,15 @@ Major new features:
>    on thread stack created by pthread_create or memory allocated by
>    malloc).
>
> +* The <stdbit.h> header has been added from ISO C2X, with
> +  stdc_leading_zeros, stdc_leading_ones, stdc_trailing_zeros,
> +  stdc_trailing_ones, stdc_first_leading_zero, stdc_first_leading_one,
> +  stdc_first_trailing_zero, stdc_first_trailing_one, stdc_count_zeros,
> +  stdc_count_ones, stdc_has_single_bit, stdc_bit_width, stdc_bit_floor
> +  and stdc_bit_ceil function families, each having functions for
> +  unsigned char, unsigned short, unsigned int, unsigned long int and
> +  unsigned long long int, and a type-generic macro.
> +
>  Deprecated and removed features, and other changes affecting compatibility:
>
>  * The ldconfig program now skips file names containing ';' or ending in
> diff --git a/bits/stdint-least.h b/bits/stdint-least.h
> new file mode 100644
> index 0000000000..74ac42f14e
> --- /dev/null
> +++ b/bits/stdint-least.h
> @@ -0,0 +1,36 @@
> +/* Define int_leastN_t and uint_leastN types.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#ifndef _BITS_STDINT_LEAST_H
> +#define _BITS_STDINT_LEAST_H   1
> +
> +#include <bits/types.h>
> +
> +/* Signed.  */
> +typedef __int_least8_t int_least8_t;
> +typedef __int_least16_t int_least16_t;
> +typedef __int_least32_t int_least32_t;
> +typedef __int_least64_t int_least64_t;
> +
> +/* Unsigned.  */
> +typedef __uint_least8_t uint_least8_t;
> +typedef __uint_least16_t uint_least16_t;
> +typedef __uint_least32_t uint_least32_t;
> +typedef __uint_least64_t uint_least64_t;
> +
> +#endif /* bits/stdint-least.h */
> diff --git a/include/stdbit.h b/include/stdbit.h
> new file mode 100644
> index 0000000000..ebd9795f28
> --- /dev/null
> +++ b/include/stdbit.h
> @@ -0,0 +1 @@
> +#include <stdlib/stdbit.h>
> diff --git a/manual/Makefile b/manual/Makefile
> index cd814b9505..92171ab254 100644
> --- a/manual/Makefile
> +++ b/manual/Makefile
> @@ -36,7 +36,7 @@ endif
>  chapters = $(addsuffix .texi, \
>                        intro errno memory ctype string charset locale   \
>                        message search pattern io stdio llio filesys     \
> -                      pipe socket terminal syslog math arith time      \
> +                      pipe socket terminal syslog math arith stdbit time \
>                        resource setjmp signal startup process ipc job   \
>                        nss users sysinfo conf crypt debug threads       \
>                        dynlink probes tunables)
> diff --git a/manual/arith.texi b/manual/arith.texi
> index be24c20493..2b99cd8389 100644
> --- a/manual/arith.texi
> +++ b/manual/arith.texi
> @@ -1,4 +1,4 @@
> -@node Arithmetic, Date and Time, Mathematics, Top
> +@node Arithmetic, Bit Manipulation, Mathematics, Top
>  @c %MENU% Low level arithmetic functions
>  @chapter Arithmetic Functions
>
> diff --git a/manual/stdbit.texi b/manual/stdbit.texi
> new file mode 100644
> index 0000000000..be6b870f76
> --- /dev/null
> +++ b/manual/stdbit.texi
> @@ -0,0 +1,179 @@
> +@node Bit Manipulation, Date and Time, Arithmetic, Top
> +@c %MENU% Bit manipulation
> +@chapter Bit Manipulation
> +
> +This chapter contains information about functions for manipulating the
> +bits of unsigned integers.  These functions are from ISO C2X and are
> +declared in the header file @file{stdbit.h}.
> +
> +Each function family has functions for the types @code{unsigned char},
> +@code{unsigned short}, @code{unsigned int}, @code{unsigned long int}
> +and @code{unsigned long long int}.  In addition, there is a
> +corresponding type-generic macro (not listed below), named the same as
> +the functions but without any suffix such as @samp{_uc}.
> +
> +@deftypefun {unsigned int} stdc_leading_zeros_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_leading_zeros_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_leading_zeros_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_leading_zeros_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_leading_zeros_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_leading_zeros} functions count the number of leading
> +(most significant) zero bits in @var{x}.  If @var{x} is zero, they
> +return the width of @var{x} in bits.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_leading_ones_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_leading_ones_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_leading_ones_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_leading_ones_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_leading_ones_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_leading_ones} functions count the number of leading
> +(most significant) one bits in @var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_trailing_zeros_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_zeros_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_zeros_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_zeros_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_zeros_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_trailing_zeros} functions count the number of trailing
> +(least significant) zero bits in @var{x}.  If @var{x} is zero, they
> +return the width of @var{x} in bits.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_trailing_ones_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_ones_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_ones_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_ones_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_trailing_ones_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_trailing_ones} functions count the number of trailing
> +(least significant) one bits in @var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_first_leading_zero_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_zero_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_zero_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_zero_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_zero_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_first_leading_zero} functions return the position of
> +the most significant zero bit in @var{x}, counting from the most
> +significant bit of @var{x} as 1, or zero if there is no zero bit in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_first_leading_one_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_one_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_one_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_one_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_first_leading_one_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_first_leading_one} functions return the position of the
> +most significant one bit in @var{x}, counting from the most
> +significant bit of @var{x} as 1, or zero if there is no one bit in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_first_trailing_zero_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_zero_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_zero_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_zero_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_zero_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_first_trailing_zero} functions return the position of
> +the least significant zero bit in @var{x}, counting from the least
> +significant bit of @var{x} as 1, or zero if there is no zero bit in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_first_trailing_one_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_one_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_one_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_one_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_first_trailing_one_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_first_trailing_one} functions return the position of
> +the least significant one bit in @var{x}, counting from the least
> +significant bit of @var{x} as 1, or zero if there is no one bit in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_count_zeros_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_count_zeros_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_count_zeros_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_count_zeros_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_count_zeros_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_count_zeros} functions count the number of zero bits in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_count_ones_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_count_ones_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_count_ones_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_count_ones_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_count_ones_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_count_ones} functions count the number of one bits in
> +@var{x}.
> +@end deftypefun
> +
> +@deftypefun {_Bool} stdc_has_single_bit_uc (unsigned char @var{x})
> +@deftypefunx {_Bool} stdc_has_single_bit_us (unsigned short @var{x})
> +@deftypefunx {_Bool} stdc_has_single_bit_ui (unsigned int @var{x})
> +@deftypefunx {_Bool} stdc_has_single_bit_ul (unsigned long int @var{x})
> +@deftypefunx {_Bool} stdc_has_single_bit_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_has_single_bit} functions return whether @var{x} has
> +exactly one bit set to one.
> +@end deftypefun
> +
> +@deftypefun {unsigned int} stdc_bit_width_uc (unsigned char @var{x})
> +@deftypefunx {unsigned int} stdc_bit_width_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_bit_width_ui (unsigned int @var{x})
> +@deftypefunx {unsigned int} stdc_bit_width_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned int} stdc_bit_width_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_bit_width} functions return the minimum number of bits
> +needed to store @var{x}.  If @var{x} is zero, they return zero.
> +@end deftypefun
> +
> +@deftypefun {unsigned char} stdc_bit_floor_uc (unsigned char @var{x})
> +@deftypefunx {unsigned short} stdc_bit_floor_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_bit_floor_ui (unsigned int @var{x})
> +@deftypefunx {unsigned long int} stdc_bit_floor_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned long long int} stdc_bit_floor_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_bit_floor} functions return the largest integer power
> +of two that is less than or equal to @var{x}.  If @var{x} is zero,
> +they return zero.
> +@end deftypefun
> +
> +@deftypefun {unsigned char} stdc_bit_ceil_uc (unsigned char @var{x})
> +@deftypefunx {unsigned short} stdc_bit_ceil_us (unsigned short @var{x})
> +@deftypefunx {unsigned int} stdc_bit_ceil_ui (unsigned int @var{x})
> +@deftypefunx {unsigned long int} stdc_bit_ceil_ul (unsigned long int @var{x})
> +@deftypefunx {unsigned long long int} stdc_bit_ceil_ull (unsigned long long int @var{x})
> +@standards{C2X, stdbit.h}
> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
> +The @code{stdc_bit_ceil} functions return the smallest integer power
> +of two that is greater than or equal to @var{x}.  If this cannot be
> +represented in the return type, they return zero.
> +@end deftypefun
> diff --git a/manual/time.texi b/manual/time.texi
> index d661d55d40..7d9efc7c6f 100644
> --- a/manual/time.texi
> +++ b/manual/time.texi
> @@ -1,4 +1,4 @@
> -@node Date and Time, Resource Usage And Limitation, Arithmetic, Top
> +@node Date and Time, Resource Usage And Limitation, Bit Manipulation, Top
>  @c %MENU% Functions for getting the date and time and formatting them nicely
>  @chapter Date and Time
>
> diff --git a/stdlib/Makefile b/stdlib/Makefile
> index 0b5ef699a2..b8aa64cf52 100644
> --- a/stdlib/Makefile
> +++ b/stdlib/Makefile
> @@ -28,6 +28,7 @@ headers := \
>    bits/indirect-return.h \
>    bits/monetary-ldbl.h \
>    bits/stdint-intn.h \
> +  bits/stdint-least.h \
>    bits/stdint-uintn.h \
>    bits/stdlib-bsearch.h \
>    bits/stdlib-float.h \
> @@ -41,6 +42,7 @@ headers := \
>    fmtmsg.h \
>    inttypes.h \
>    monetary.h \
> +  stdbit.h \
>    stdint.h \
>    stdlib.h \
>    sys/errno.h \
> @@ -115,6 +117,76 @@ routines := \
>    setenv \
>    srand48 \
>    srand48_r \
> +  stdc_bit_ceil_uc \
> +  stdc_bit_ceil_ui \
> +  stdc_bit_ceil_ul \
> +  stdc_bit_ceil_ull \
> +  stdc_bit_ceil_us \
> +  stdc_bit_floor_uc \
> +  stdc_bit_floor_ui \
> +  stdc_bit_floor_ul \
> +  stdc_bit_floor_ull \
> +  stdc_bit_floor_us \
> +  stdc_bit_width_uc \
> +  stdc_bit_width_ui \
> +  stdc_bit_width_ul \
> +  stdc_bit_width_ull \
> +  stdc_bit_width_us \
> +  stdc_count_ones_uc \
> +  stdc_count_ones_ui \
> +  stdc_count_ones_ul \
> +  stdc_count_ones_ull \
> +  stdc_count_ones_us \
> +  stdc_count_zeros_uc \
> +  stdc_count_zeros_ui \
> +  stdc_count_zeros_ul \
> +  stdc_count_zeros_ull \
> +  stdc_count_zeros_us \
> +  stdc_first_leading_one_uc \
> +  stdc_first_leading_one_ui \
> +  stdc_first_leading_one_ul \
> +  stdc_first_leading_one_ull \
> +  stdc_first_leading_one_us \
> +  stdc_first_leading_zero_uc \
> +  stdc_first_leading_zero_ui \
> +  stdc_first_leading_zero_ul \
> +  stdc_first_leading_zero_ull \
> +  stdc_first_leading_zero_us \
> +  stdc_first_trailing_one_uc \
> +  stdc_first_trailing_one_ui \
> +  stdc_first_trailing_one_ul \
> +  stdc_first_trailing_one_ull \
> +  stdc_first_trailing_one_us \
> +  stdc_first_trailing_zero_uc \
> +  stdc_first_trailing_zero_ui \
> +  stdc_first_trailing_zero_ul \
> +  stdc_first_trailing_zero_ull \
> +  stdc_first_trailing_zero_us \
> +  stdc_has_single_bit_uc \
> +  stdc_has_single_bit_ui \
> +  stdc_has_single_bit_ul \
> +  stdc_has_single_bit_ull \
> +  stdc_has_single_bit_us \
> +  stdc_leading_ones_uc \
> +  stdc_leading_ones_ui \
> +  stdc_leading_ones_ul \
> +  stdc_leading_ones_ull \
> +  stdc_leading_ones_us \
> +  stdc_leading_zeros_uc \
> +  stdc_leading_zeros_ui \
> +  stdc_leading_zeros_ul \
> +  stdc_leading_zeros_ull \
> +  stdc_leading_zeros_us \
> +  stdc_trailing_ones_uc \
> +  stdc_trailing_ones_ui \
> +  stdc_trailing_ones_ul \
> +  stdc_trailing_ones_ull \
> +  stdc_trailing_ones_us \
> +  stdc_trailing_zeros_uc \
> +  stdc_trailing_zeros_ui \
> +  stdc_trailing_zeros_ul \
> +  stdc_trailing_zeros_ull \
> +  stdc_trailing_zeros_us \
>    strfmon \
>    strfmon_l \
>    strfromd \
> @@ -236,6 +308,21 @@ tests := \
>    tst-setcontext9 \
>    tst-setcontext10 \
>    tst-setcontext11 \
> +  tst-stdbit-Wconversion \
> +  tst-stdc_bit_ceil \
> +  tst-stdc_bit_floor \
> +  tst-stdc_bit_width \
> +  tst-stdc_count_ones \
> +  tst-stdc_count_zeros \
> +  tst-stdc_first_leading_one \
> +  tst-stdc_first_leading_zero \
> +  tst-stdc_first_trailing_one \
> +  tst-stdc_first_trailing_zero \
> +  tst-stdc_has_single_bit \
> +  tst-stdc_leading_ones \
> +  tst-stdc_leading_zeros \
> +  tst-stdc_trailing_ones \
> +  tst-stdc_trailing_zeros \
>    tst-strfmon_l \
>    tst-strfrom \
>    tst-strfrom-locale \
> @@ -306,6 +393,22 @@ CFLAGS-tst-abs.c += -fno-builtin
>  CFLAGS-tst-labs.c += -fno-builtin
>  CFLAGS-tst-llabs.c += -fno-builtin
>
> +CFLAGS-tst-stdbit-Wconversion.c += -Wconversion -Werror
> +CFLAGS-tst-stdc_trailing_zeros.c += -fno-builtin
> +CFLAGS-tst-stdc_trailing_ones.c += -fno-builtin
> +CFLAGS-tst-stdc_leading_zeros.c += -fno-builtin
> +CFLAGS-tst-stdc_leading_ones.c += -fno-builtin
> +CFLAGS-tst-stdc_has_single_bit.c += -fno-builtin
> +CFLAGS-tst-stdc_first_trailing_zero.c += -fno-builtin
> +CFLAGS-tst-stdc_first_trailing_one.c += -fno-builtin
> +CFLAGS-tst-stdc_first_leading_zero.c += -fno-builtin
> +CFLAGS-tst-stdc_first_leading_one.c += -fno-builtin
> +CFLAGS-tst-stdc_count_zeros.c += -fno-builtin
> +CFLAGS-tst-stdc_count_ones.c += -fno-builtin
> +CFLAGS-tst-stdc_bit_width.c += -fno-builtin
> +CFLAGS-tst-stdc_bit_floor.c += -fno-builtin
> +CFLAGS-tst-stdc_bit_ceil.c += -fno-builtin
> +
>  ifeq ($(have-cxx-thread_local),yes)
>  CFLAGS-tst-quick_exit.o = -std=c++11
>  LDLIBS-tst-quick_exit = -lstdc++
> diff --git a/stdlib/Versions b/stdlib/Versions
> index 6a861c54a1..ea2265bbd4 100644
> --- a/stdlib/Versions
> +++ b/stdlib/Versions
> @@ -151,6 +151,78 @@ libc {
>      __isoc23_strtoimax;
>      __isoc23_strtoumax;
>    }
> +  GLIBC_2.39 {
> +    stdc_leading_zeros_uc;
> +    stdc_leading_zeros_us;
> +    stdc_leading_zeros_ui;
> +    stdc_leading_zeros_ul;
> +    stdc_leading_zeros_ull;
> +    stdc_leading_ones_uc;
> +    stdc_leading_ones_us;
> +    stdc_leading_ones_ui;
> +    stdc_leading_ones_ul;
> +    stdc_leading_ones_ull;
> +    stdc_trailing_zeros_uc;
> +    stdc_trailing_zeros_us;
> +    stdc_trailing_zeros_ui;
> +    stdc_trailing_zeros_ul;
> +    stdc_trailing_zeros_ull;
> +    stdc_trailing_ones_uc;
> +    stdc_trailing_ones_us;
> +    stdc_trailing_ones_ui;
> +    stdc_trailing_ones_ul;
> +    stdc_trailing_ones_ull;
> +    stdc_first_leading_zero_uc;
> +    stdc_first_leading_zero_us;
> +    stdc_first_leading_zero_ui;
> +    stdc_first_leading_zero_ul;
> +    stdc_first_leading_zero_ull;
> +    stdc_first_leading_one_uc;
> +    stdc_first_leading_one_us;
> +    stdc_first_leading_one_ui;
> +    stdc_first_leading_one_ul;
> +    stdc_first_leading_one_ull;
> +    stdc_first_trailing_zero_uc;
> +    stdc_first_trailing_zero_us;
> +    stdc_first_trailing_zero_ui;
> +    stdc_first_trailing_zero_ul;
> +    stdc_first_trailing_zero_ull;
> +    stdc_first_trailing_one_uc;
> +    stdc_first_trailing_one_us;
> +    stdc_first_trailing_one_ui;
> +    stdc_first_trailing_one_ul;
> +    stdc_first_trailing_one_ull;
> +    stdc_count_zeros_uc;
> +    stdc_count_zeros_us;
> +    stdc_count_zeros_ui;
> +    stdc_count_zeros_ul;
> +    stdc_count_zeros_ull;
> +    stdc_count_ones_uc;
> +    stdc_count_ones_us;
> +    stdc_count_ones_ui;
> +    stdc_count_ones_ul;
> +    stdc_count_ones_ull;
> +    stdc_has_single_bit_uc;
> +    stdc_has_single_bit_us;
> +    stdc_has_single_bit_ui;
> +    stdc_has_single_bit_ul;
> +    stdc_has_single_bit_ull;
> +    stdc_bit_width_uc;
> +    stdc_bit_width_us;
> +    stdc_bit_width_ui;
> +    stdc_bit_width_ul;
> +    stdc_bit_width_ull;
> +    stdc_bit_floor_uc;
> +    stdc_bit_floor_us;
> +    stdc_bit_floor_ui;
> +    stdc_bit_floor_ul;
> +    stdc_bit_floor_ull;
> +    stdc_bit_ceil_uc;
> +    stdc_bit_ceil_us;
> +    stdc_bit_ceil_ui;
> +    stdc_bit_ceil_ul;
> +    stdc_bit_ceil_ull;
> +  }
>    GLIBC_PRIVATE {
>      # functions which have an additional interface since they are
>      # are cancelable.
> diff --git a/stdlib/stdbit.h b/stdlib/stdbit.h
> new file mode 100644
> index 0000000000..a26bc22de9
> --- /dev/null
> +++ b/stdlib/stdbit.h
> @@ -0,0 +1,773 @@
> +/* ISO C23 Standard: 7.18 - Bit and byte utilities <stdbit.h>.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#ifndef _STDBIT_H
> +#define _STDBIT_H      1
> +
> +#include <features.h>
> +#include <bits/endian.h>
> +#include <bits/stdint-intn.h>
> +#include <bits/stdint-uintn.h>
> +#include <bits/stdint-least.h>
> +/* In C23, <stdbool.h> defines only an implementation-namespace macro,
> +   so is OK to include here.  Before C23, including <stdbool.h> allows
> +   the header to use bool rather than _Bool unconditionally, and so to
> +   compile as C++ (although the type-generic macros are not a good
> +   form of type-generic interface for C++).  */
> +#include <stdbool.h>
> +#define __need_size_t
> +#include <stddef.h>
> +
> +#define __STDC_VERSION_STDBIT_H__      202311L
> +
> +#define __STDC_ENDIAN_LITTLE__         __LITTLE_ENDIAN
> +#define __STDC_ENDIAN_BIG__            __BIG_ENDIAN
> +#define __STDC_ENDIAN_NATIVE__         __BYTE_ORDER
> +
> +__BEGIN_DECLS
> +
> +/* Count leading zeros.  */
> +extern unsigned int stdc_leading_zeros_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_zeros_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_zeros_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_zeros_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_leading_zeros_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_leading_zeros(x)                          \
> +  (stdc_leading_zeros_ull (x)                          \
> +   - (unsigned int) (8 * (sizeof (0ULL) - sizeof (x))))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline unsigned int
> +__clz64_inline (uint64_t __x)
> +{
> +  return __x == 0 ? 64U : (unsigned int) __builtin_clzll (__x);
> +}
> +
> +static __always_inline unsigned int
> +__clz32_inline (uint32_t __x)
> +{
> +  return __x == 0 ? 32U : (unsigned int) __builtin_clz (__x);
> +}
> +
> +static __always_inline unsigned int
> +__clz16_inline (uint16_t __x)
> +{
> +  return __clz32_inline (__x) - 16;
> +}
> +
> +static __always_inline unsigned int
> +__clz8_inline (uint8_t __x)
> +{
> +  return __clz32_inline (__x) - 24;
> +}
> +
> +# define stdc_leading_zeros_uc(x) (__clz8_inline (x))
> +# define stdc_leading_zeros_us(x) (__clz16_inline (x))
> +# define stdc_leading_zeros_ui(x) (__clz32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_leading_zeros_ul(x) (__clz64_inline (x))
> +# else
> +#  define stdc_leading_zeros_ul(x) (__clz32_inline (x))
> +# endif
> +# define stdc_leading_zeros_ull(x) (__clz64_inline (x))
> +#endif
> +
> +/* Count leading ones.  */
> +extern unsigned int stdc_leading_ones_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_ones_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_ones_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_leading_ones_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_leading_ones_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_leading_ones(x)                                   \
> +  (stdc_leading_ones_ull ((unsigned long long int) (x)         \
> +                         << 8 * (sizeof (0ULL) - sizeof (x))))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
are there any cases we need the 64 bit version and we have the `long` version
of the builtin but not `long long`?
> +static __always_inline unsigned int
> +__clo64_inline (uint64_t __x)
> +{
> +  return __clz64_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__clo32_inline (uint32_t __x)
> +{
> +  return __clz32_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__clo16_inline (uint16_t __x)
> +{
> +  return __clz16_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__clo8_inline (uint8_t __x)
> +{
> +  return __clz8_inline (~__x);
> +}
> +
> +# define stdc_leading_ones_uc(x) (__clo8_inline (x))
> +# define stdc_leading_ones_us(x) (__clo16_inline (x))
> +# define stdc_leading_ones_ui(x) (__clo32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_leading_ones_ul(x) (__clo64_inline (x))
> +# else
> +#  define stdc_leading_ones_ul(x) (__clo32_inline (x))
> +# endif
> +# define stdc_leading_ones_ull(x) (__clo64_inline (x))
> +#endif
> +
> +/* Count trailing zeros.  */
> +extern unsigned int stdc_trailing_zeros_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_zeros_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_zeros_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_zeros_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_trailing_zeros_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_trailing_zeros(x)                         \
> +  (sizeof (x) == 8 ? stdc_trailing_zeros_ull (x)       \
> +   : sizeof (x) == 4 ? stdc_trailing_zeros_ui (x)      \
> +   : sizeof (x) == 2 ? stdc_trailing_zeros_us (x)      \
> +   : stdc_trailing_zeros_uc (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
> +static __always_inline unsigned int
> +__ctz64_inline (uint64_t __x)
> +{
> +  return __x == 0 ? 64U : (unsigned int) __builtin_ctzll (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ctz32_inline (uint32_t __x)
> +{
> +  return __x == 0 ? 32U : (unsigned int) __builtin_ctz (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ctz16_inline (uint16_t __x)
> +{
> +  return __x == 0 ? 16U : (unsigned int) __builtin_ctz (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ctz8_inline (uint8_t __x)
> +{
> +  return __x == 0 ? 8U : (unsigned int) __builtin_ctz (__x);
> +}
> +
> +# define stdc_trailing_zeros_uc(x) (__ctz8_inline (x))
> +# define stdc_trailing_zeros_us(x) (__ctz16_inline (x))
> +# define stdc_trailing_zeros_ui(x) (__ctz32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_trailing_zeros_ul(x) (__ctz64_inline (x))
> +# else
> +#  define stdc_trailing_zeros_ul(x) (__ctz32_inline (x))
> +# endif
> +# define stdc_trailing_zeros_ull(x) (__ctz64_inline (x))
> +#endif
> +
> +/* Count trailing ones.  */
> +extern unsigned int stdc_trailing_ones_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_ones_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_ones_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_trailing_ones_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_trailing_ones_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_trailing_ones(x) (stdc_trailing_ones_ull (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
> +static __always_inline unsigned int
> +__cto64_inline (uint64_t __x)
> +{
> +  return __ctz64_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__cto32_inline (uint32_t __x)
> +{
> +  return __ctz32_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__cto16_inline (uint16_t __x)
> +{
> +  return __ctz16_inline (~__x);
> +}
> +
> +static __always_inline unsigned int
> +__cto8_inline (uint8_t __x)
> +{
> +  return __ctz8_inline (~__x);
> +}
> +
> +# define stdc_trailing_ones_uc(x) (__cto8_inline (x))
> +# define stdc_trailing_ones_us(x) (__cto16_inline (x))
> +# define stdc_trailing_ones_ui(x) (__cto32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_trailing_ones_ul(x) (__cto64_inline (x))
> +# else
> +#  define stdc_trailing_ones_ul(x) (__cto32_inline (x))
> +# endif
> +# define stdc_trailing_ones_ull(x) (__cto64_inline (x))
> +#endif
> +
> +/* First leading zero.  */
> +extern unsigned int stdc_first_leading_zero_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_zero_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_zero_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_zero_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_first_leading_zero_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_first_leading_zero(x)                     \
> +  (sizeof (x) == 8 ? stdc_first_leading_zero_ull (x)   \
> +   : sizeof (x) == 4 ? stdc_first_leading_zero_ui (x)  \
> +   : sizeof (x) == 2 ? stdc_first_leading_zero_us (x)  \
> +   : stdc_first_leading_zero_uc (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline unsigned int
> +__flz64_inline (uint64_t __x)
> +{
> +  return __x == (uint64_t) -1 ? 0 : 1 + __clo64_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flz32_inline (uint32_t __x)
> +{
> +  return __x == (uint32_t) -1 ? 0 : 1 + __clo32_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flz16_inline (uint16_t __x)
> +{
> +  return __x == (uint16_t) -1 ? 0 : 1 + __clo16_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flz8_inline (uint8_t __x)
> +{
> +  return __x == (uint8_t) -1 ? 0 : 1 + __clo8_inline (__x);
> +}
> +
> +# define stdc_first_leading_zero_uc(x) (__flz8_inline (x))
> +# define stdc_first_leading_zero_us(x) (__flz16_inline (x))
> +# define stdc_first_leading_zero_ui(x) (__flz32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_first_leading_zero_ul(x) (__flz64_inline (x))
> +# else
> +#  define stdc_first_leading_zero_ul(x) (__flz32_inline (x))
> +# endif
> +# define stdc_first_leading_zero_ull(x) (__flz64_inline (x))
> +#endif
> +
> +/* First leading one.  */
> +extern unsigned int stdc_first_leading_one_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_one_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_one_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_leading_one_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_first_leading_one_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_first_leading_one(x)                      \
> +  (sizeof (x) == 8 ? stdc_first_leading_one_ull (x)    \
> +   : sizeof (x) == 4 ? stdc_first_leading_one_ui (x)   \
> +   : sizeof (x) == 2 ? stdc_first_leading_one_us (x)   \
> +   : stdc_first_leading_one_uc (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline unsigned int
> +__flo64_inline (uint64_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __clz64_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flo32_inline (uint32_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __clz32_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flo16_inline (uint16_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __clz16_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__flo8_inline (uint8_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __clz8_inline (__x);
> +}
> +
> +# define stdc_first_leading_one_uc(x) (__flo8_inline (x))
> +# define stdc_first_leading_one_us(x) (__flo16_inline (x))
> +# define stdc_first_leading_one_ui(x) (__flo32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_first_leading_one_ul(x) (__flo64_inline (x))
> +# else
> +#  define stdc_first_leading_one_ul(x) (__flo32_inline (x))
> +# endif
> +# define stdc_first_leading_one_ull(x) (__flo64_inline (x))
> +#endif
> +
> +/* First trailing zero.  */
> +extern unsigned int stdc_first_trailing_zero_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_zero_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_zero_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_zero_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_first_trailing_zero_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_first_trailing_zero(x)                    \
> +  (sizeof (x) == 8 ? stdc_first_trailing_zero_ull (x)  \
> +   : sizeof (x) == 4 ? stdc_first_trailing_zero_ui (x) \
> +   : sizeof (x) == 2 ? stdc_first_trailing_zero_us (x) \
> +   : stdc_first_trailing_zero_uc (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
> +static __always_inline unsigned int
> +__ftz64_inline (uint64_t __x)
> +{
> +  return __x == (uint64_t) -1 ? 0 : 1 + __cto64_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ftz32_inline (uint32_t __x)
> +{
> +  return __x == (uint32_t) -1 ? 0 : 1 + __cto32_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ftz16_inline (uint16_t __x)
> +{
> +  return __x == (uint16_t) -1 ? 0 : 1 + __cto16_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__ftz8_inline (uint8_t __x)
> +{
> +  return __x == (uint8_t) -1 ? 0 : 1 + __cto8_inline (__x);
> +}
> +
> +# define stdc_first_trailing_zero_uc(x) (__ftz8_inline (x))
> +# define stdc_first_trailing_zero_us(x) (__ftz16_inline (x))
> +# define stdc_first_trailing_zero_ui(x) (__ftz32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_first_trailing_zero_ul(x) (__ftz64_inline (x))
> +# else
> +#  define stdc_first_trailing_zero_ul(x) (__ftz32_inline (x))
> +# endif
> +# define stdc_first_trailing_zero_ull(x) (__ftz64_inline (x))
> +#endif
> +
> +/* First trailing one.  */
> +extern unsigned int stdc_first_trailing_one_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_one_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_one_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_first_trailing_one_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_first_trailing_one_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_first_trailing_one(x)                     \
> +  (sizeof (x) == 8 ? stdc_first_trailing_one_ull (x)   \
> +   : sizeof (x) == 4 ? stdc_first_trailing_one_ui (x)  \
> +   : sizeof (x) == 2 ? stdc_first_trailing_one_us (x)  \
> +   : stdc_first_trailing_one_uc (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
> +static __always_inline unsigned int
> +__fto64_inline (uint64_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __ctz64_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__fto32_inline (uint32_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __ctz32_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__fto16_inline (uint16_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __ctz16_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__fto8_inline (uint8_t __x)
> +{
> +  return __x == 0 ? 0 : 1 + __ctz8_inline (__x);
> +}
> +
> +# define stdc_first_trailing_one_uc(x) (__fto8_inline (x))
> +# define stdc_first_trailing_one_us(x) (__fto16_inline (x))
> +# define stdc_first_trailing_one_ui(x) (__fto32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_first_trailing_one_ul(x) (__fto64_inline (x))
> +# else
> +#  define stdc_first_trailing_one_ul(x) (__fto32_inline (x))
> +# endif
> +# define stdc_first_trailing_one_ull(x) (__fto64_inline (x))
> +#endif
> +
> +/* Count zeros.  */
> +extern unsigned int stdc_count_zeros_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_zeros_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_zeros_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_zeros_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_count_zeros_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_count_zeros(x)                            \
> +  (stdc_count_zeros_ull (x)                            \
> +   - (unsigned int) (8 * (sizeof (0ULL) - sizeof (x))))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_popcountll)
> +static __always_inline unsigned int
> +__cz64_inline (uint64_t __x)
> +{
> +  return 64U - (unsigned int) __builtin_popcountll (__x);
> +}
> +
> +static __always_inline unsigned int
> +__cz32_inline (uint32_t __x)
> +{
> +  return 32U - (unsigned int) __builtin_popcount (__x);
> +}
> +
> +static __always_inline unsigned int
> +__cz16_inline (uint16_t __x)
> +{
> +  return 16U - (unsigned int) __builtin_popcount (__x);
> +}
> +
> +static __always_inline unsigned int
> +__cz8_inline (uint8_t __x)
> +{
> +  return 8U - (unsigned int) __builtin_popcount (__x);
> +}
> +
> +# define stdc_count_zeros_uc(x) (__cz8_inline (x))
> +# define stdc_count_zeros_us(x) (__cz16_inline (x))
> +# define stdc_count_zeros_ui(x) (__cz32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_count_zeros_ul(x) (__cz64_inline (x))
> +# else
> +#  define stdc_count_zeros_ul(x) (__cz32_inline (x))
> +# endif
> +# define stdc_count_zeros_ull(x) (__cz64_inline (x))
> +#endif
> +
> +/* Count ones.  */
> +extern unsigned int stdc_count_ones_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_ones_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_ones_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_count_ones_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_count_ones_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_count_ones(x) (stdc_count_ones_ull (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_popcountll)
> +static __always_inline unsigned int
> +__co64_inline (uint64_t __x)
> +{
> +  return (unsigned int) __builtin_popcountll (__x);
> +}
> +
> +static __always_inline unsigned int
> +__co32_inline (uint32_t __x)
> +{
> +  return (unsigned int) __builtin_popcount (__x);
> +}
> +
> +static __always_inline unsigned int
> +__co16_inline (uint16_t __x)
> +{
> +  return (unsigned int) __builtin_popcount (__x);
> +}
> +
> +static __always_inline unsigned int
> +__co8_inline (uint8_t __x)
> +{
> +  return (unsigned int) __builtin_popcount (__x);
> +}
> +
> +# define stdc_count_ones_uc(x) (__co8_inline (x))
> +# define stdc_count_ones_us(x) (__co16_inline (x))
> +# define stdc_count_ones_ui(x) (__co32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_count_ones_ul(x) (__co64_inline (x))
> +# else
> +#  define stdc_count_ones_ul(x) (__co32_inline (x))
> +# endif
> +# define stdc_count_ones_ull(x) (__co64_inline (x))
> +#endif
> +
> +/* Single-bit check.  */
> +extern bool stdc_has_single_bit_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern bool stdc_has_single_bit_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern bool stdc_has_single_bit_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern bool stdc_has_single_bit_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern bool stdc_has_single_bit_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_has_single_bit(x)                         \
> +  ((bool) (sizeof (x) <= sizeof (unsigned int)         \
> +          ? stdc_has_single_bit_ui (x)                 \
> +          : stdc_has_single_bit_ull (x)))
> +
> +static __always_inline bool
> +__hsb64_inline (uint64_t __x)
> +{
> +  return (__x ^ (__x - 1)) > __x - 1;
> +}
> +
> +static __always_inline bool
> +__hsb32_inline (uint32_t __x)
> +{
> +  return (__x ^ (__x - 1)) > __x - 1;
> +}
> +
> +static __always_inline bool
> +__hsb16_inline (uint16_t __x)
> +{
> +  return (__x ^ (__x - 1)) > __x - 1;
> +}
> +
> +static __always_inline bool
> +__hsb8_inline (uint8_t __x)
> +{
> +  return (__x ^ (__x - 1)) > __x - 1;
> +}
> +
> +#define stdc_has_single_bit_uc(x) (__hsb8_inline (x))
> +#define stdc_has_single_bit_us(x) (__hsb16_inline (x))
> +#define stdc_has_single_bit_ui(x) (__hsb32_inline (x))
> +#if __WORDSIZE == 64
> +# define stdc_has_single_bit_ul(x) (__hsb64_inline (x))
> +#else
> +# define stdc_has_single_bit_ul(x) (__hsb32_inline (x))
> +#endif
> +#define stdc_has_single_bit_ull(x) (__hsb64_inline (x))
> +
> +/* Bit width.  */
> +extern unsigned int stdc_bit_width_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_bit_width_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_bit_width_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_bit_width_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned int stdc_bit_width_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_bit_width(x) (stdc_bit_width_ull (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline unsigned int
> +__bw64_inline (uint64_t __x)
> +{
> +  return 64 - __clz64_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__bw32_inline (uint32_t __x)
> +{
> +  return 32 - __clz32_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__bw16_inline (uint16_t __x)
> +{
> +  return 16 - __clz16_inline (__x);
> +}
> +
> +static __always_inline unsigned int
> +__bw8_inline (uint8_t __x)
> +{
> +  return 8 - __clz8_inline (__x);
> +}
> +
> +# define stdc_bit_width_uc(x) (__bw8_inline (x))
> +# define stdc_bit_width_us(x) (__bw16_inline (x))
> +# define stdc_bit_width_ui(x) (__bw32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_bit_width_ul(x) (__bw64_inline (x))
> +# else
> +#  define stdc_bit_width_ul(x) (__bw32_inline (x))
> +# endif
> +# define stdc_bit_width_ull(x) (__bw64_inline (x))
> +#endif
> +
> +/* Bit floor.  */
> +extern unsigned char stdc_bit_floor_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned short stdc_bit_floor_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_bit_floor_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned long int stdc_bit_floor_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned long long int stdc_bit_floor_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_bit_floor(x) ((__typeof (x)) stdc_bit_floor_ull (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline uint64_t
> +__bf64_inline (uint64_t __x)
> +{
> +  return __x == 0 ? 0 : ((uint64_t) 1) << (__bw64_inline (__x) - 1);
> +}
> +
> +static __always_inline uint32_t
> +__bf32_inline (uint32_t __x)
> +{
> +  return __x == 0 ? 0 : ((uint32_t) 1) << (__bw32_inline (__x) - 1);
> +}
> +
> +static __always_inline uint16_t
> +__bf16_inline (uint16_t __x)
> +{
> +  return __x == 0 ? 0 : ((uint16_t) 1) << (__bw16_inline (__x) - 1);
> +}
> +
> +static __always_inline uint8_t
> +__bf8_inline (uint8_t __x)
> +{
> +  return __x == 0 ? 0 : ((uint8_t) 1) << (__bw8_inline (__x) - 1);
> +}
> +
> +# define stdc_bit_floor_uc(x) ((unsigned char) __bf8_inline (x))
> +# define stdc_bit_floor_us(x) ((unsigned short) __bf16_inline (x))
> +# define stdc_bit_floor_ui(x) ((unsigned int) __bf32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_bit_floor_ul(x) ((unsigned long int) __bf64_inline (x))
> +# else
> +#  define stdc_bit_floor_ul(x) ((unsigned long int) __bf32_inline (x))
> +# endif
> +# define stdc_bit_floor_ull(x) ((unsigned long long int) __bf64_inline (x))
> +#endif
> +
> +/* Bit ceiling.  */
> +extern unsigned char stdc_bit_ceil_uc (unsigned char __x)
> +     __THROW __attribute_const__;
> +extern unsigned short stdc_bit_ceil_us (unsigned short __x)
> +     __THROW __attribute_const__;
> +extern unsigned int stdc_bit_ceil_ui (unsigned int __x)
> +     __THROW __attribute_const__;
> +extern unsigned long int stdc_bit_ceil_ul (unsigned long int __x)
> +     __THROW __attribute_const__;
> +__extension__
> +extern unsigned long long int stdc_bit_ceil_ull (unsigned long long int __x)
> +     __THROW __attribute_const__;
> +#define stdc_bit_ceil(x) ((__typeof (x)) stdc_bit_ceil_ull (x))
> +
> +#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
> +static __always_inline uint64_t
> +__bc64_inline (uint64_t __x)
> +{
> +  return __x <= 1 ? 1 : ((uint64_t) 2) << (__bw64_inline (__x - 1) - 1);
> +}
> +
> +static __always_inline uint32_t
> +__bc32_inline (uint32_t __x)
> +{
> +  return __x <= 1 ? 1 : ((uint32_t) 2) << (__bw32_inline (__x - 1) - 1);
> +}
> +
> +static __always_inline uint16_t
> +__bc16_inline (uint16_t __x)
> +{
> +  return __x <= 1 ? 1 : ((uint16_t) 2) << (__bw16_inline (__x - 1) - 1);
> +}
> +
> +static __always_inline uint8_t
> +__bc8_inline (uint8_t __x)
> +{
> +  return __x <= 1 ? 1 : ((uint8_t) 2) << (__bw8_inline (__x - 1) - 1);
> +}
> +
> +# define stdc_bit_ceil_uc(x) ((unsigned char) __bc8_inline (x))
> +# define stdc_bit_ceil_us(x) ((unsigned short) __bc16_inline (x))
> +# define stdc_bit_ceil_ui(x) ((unsigned int) __bc32_inline (x))
> +# if __WORDSIZE == 64
> +#  define stdc_bit_ceil_ul(x) ((unsigned long int) __bc64_inline (x))
> +# else
> +#  define stdc_bit_ceil_ul(x) ((unsigned long int) __bc32_inline (x))
> +# endif
> +# define stdc_bit_ceil_ull(x) ((unsigned long long int) __bc64_inline (x))
> +#endif
> +
> +__END_DECLS
> +
> +#endif /* _STDBIT_H */
> diff --git a/stdlib/stdc_bit_ceil_uc.c b/stdlib/stdc_bit_ceil_uc.c
> new file mode 100644
> index 0000000000..1252829fd2
> --- /dev/null
> +++ b/stdlib/stdc_bit_ceil_uc.c
> @@ -0,0 +1,25 @@
> +/* Bit ceiling for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned char
> +(stdc_bit_ceil_uc) (unsigned char x)
> +{
> +  return stdc_bit_ceil_uc (x);
> +}
> diff --git a/stdlib/stdc_bit_ceil_ui.c b/stdlib/stdc_bit_ceil_ui.c
> new file mode 100644
> index 0000000000..25f552d8db
> --- /dev/null
> +++ b/stdlib/stdc_bit_ceil_ui.c
> @@ -0,0 +1,25 @@
> +/* Bit ceiling for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_ceil_ui) (unsigned int x)
> +{
> +  return stdc_bit_ceil_ui (x);
> +}
> diff --git a/stdlib/stdc_bit_ceil_ul.c b/stdlib/stdc_bit_ceil_ul.c
> new file mode 100644
> index 0000000000..1897080f96
> --- /dev/null
> +++ b/stdlib/stdc_bit_ceil_ul.c
> @@ -0,0 +1,25 @@
> +/* Bit ceiling for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned long int
> +(stdc_bit_ceil_ul) (unsigned long int x)
> +{
> +  return stdc_bit_ceil_ul (x);
> +}
> diff --git a/stdlib/stdc_bit_ceil_ull.c b/stdlib/stdc_bit_ceil_ull.c
> new file mode 100644
> index 0000000000..2990dadaec
> --- /dev/null
> +++ b/stdlib/stdc_bit_ceil_ull.c
> @@ -0,0 +1,25 @@
> +/* Bit ceiling for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned long long int
> +(stdc_bit_ceil_ull) (unsigned long long int x)
> +{
> +  return stdc_bit_ceil_ull (x);
> +}
> diff --git a/stdlib/stdc_bit_ceil_us.c b/stdlib/stdc_bit_ceil_us.c
> new file mode 100644
> index 0000000000..9db0665ff6
> --- /dev/null
> +++ b/stdlib/stdc_bit_ceil_us.c
> @@ -0,0 +1,25 @@
> +/* Bit ceiling for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned short
> +(stdc_bit_ceil_us) (unsigned short x)
> +{
> +  return stdc_bit_ceil_us (x);
> +}
> diff --git a/stdlib/stdc_bit_floor_uc.c b/stdlib/stdc_bit_floor_uc.c
> new file mode 100644
> index 0000000000..4c313ef866
> --- /dev/null
> +++ b/stdlib/stdc_bit_floor_uc.c
> @@ -0,0 +1,25 @@
> +/* Bit floor for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned char
> +(stdc_bit_floor_uc) (unsigned char x)
> +{
> +  return stdc_bit_floor_uc (x);
> +}
> diff --git a/stdlib/stdc_bit_floor_ui.c b/stdlib/stdc_bit_floor_ui.c
> new file mode 100644
> index 0000000000..3daa47c820
> --- /dev/null
> +++ b/stdlib/stdc_bit_floor_ui.c
> @@ -0,0 +1,25 @@
> +/* Bit floor for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_floor_ui) (unsigned int x)
> +{
> +  return stdc_bit_floor_ui (x);
> +}
> diff --git a/stdlib/stdc_bit_floor_ul.c b/stdlib/stdc_bit_floor_ul.c
> new file mode 100644
> index 0000000000..a9eb7682db
> --- /dev/null
> +++ b/stdlib/stdc_bit_floor_ul.c
> @@ -0,0 +1,25 @@
> +/* Bit floor for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned long int
> +(stdc_bit_floor_ul) (unsigned long int x)
> +{
> +  return stdc_bit_floor_ul (x);
> +}
> diff --git a/stdlib/stdc_bit_floor_ull.c b/stdlib/stdc_bit_floor_ull.c
> new file mode 100644
> index 0000000000..0c2d3d9d96
> --- /dev/null
> +++ b/stdlib/stdc_bit_floor_ull.c
> @@ -0,0 +1,25 @@
> +/* Bit floor for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned long long int
> +(stdc_bit_floor_ull) (unsigned long long int x)
> +{
> +  return stdc_bit_floor_ull (x);
> +}
> diff --git a/stdlib/stdc_bit_floor_us.c b/stdlib/stdc_bit_floor_us.c
> new file mode 100644
> index 0000000000..3d2654ffb5
> --- /dev/null
> +++ b/stdlib/stdc_bit_floor_us.c
> @@ -0,0 +1,25 @@
> +/* Bit floor for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned short
> +(stdc_bit_floor_us) (unsigned short x)
> +{
> +  return stdc_bit_floor_us (x);
> +}
> diff --git a/stdlib/stdc_bit_width_uc.c b/stdlib/stdc_bit_width_uc.c
> new file mode 100644
> index 0000000000..909699cd52
> --- /dev/null
> +++ b/stdlib/stdc_bit_width_uc.c
> @@ -0,0 +1,25 @@
> +/* Bit width for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_width_uc) (unsigned char x)
> +{
> +  return stdc_bit_width_uc (x);
> +}
> diff --git a/stdlib/stdc_bit_width_ui.c b/stdlib/stdc_bit_width_ui.c
> new file mode 100644
> index 0000000000..36def9ba64
> --- /dev/null
> +++ b/stdlib/stdc_bit_width_ui.c
> @@ -0,0 +1,25 @@
> +/* Bit width for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_width_ui) (unsigned int x)
> +{
> +  return stdc_bit_width_ui (x);
> +}
> diff --git a/stdlib/stdc_bit_width_ul.c b/stdlib/stdc_bit_width_ul.c
> new file mode 100644
> index 0000000000..ef727cef1f
> --- /dev/null
> +++ b/stdlib/stdc_bit_width_ul.c
> @@ -0,0 +1,25 @@
> +/* Bit width for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_width_ul) (unsigned long int x)
> +{
> +  return stdc_bit_width_ul (x);
> +}
> diff --git a/stdlib/stdc_bit_width_ull.c b/stdlib/stdc_bit_width_ull.c
> new file mode 100644
> index 0000000000..58357449b0
> --- /dev/null
> +++ b/stdlib/stdc_bit_width_ull.c
> @@ -0,0 +1,25 @@
> +/* Bit width for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_width_ull) (unsigned long long int x)
> +{
> +  return stdc_bit_width_ull (x);
> +}
> diff --git a/stdlib/stdc_bit_width_us.c b/stdlib/stdc_bit_width_us.c
> new file mode 100644
> index 0000000000..7a3750b5da
> --- /dev/null
> +++ b/stdlib/stdc_bit_width_us.c
> @@ -0,0 +1,25 @@
> +/* Bit width for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_bit_width_us) (unsigned short x)
> +{
> +  return stdc_bit_width_us (x);
> +}
> diff --git a/stdlib/stdc_count_ones_uc.c b/stdlib/stdc_count_ones_uc.c
> new file mode 100644
> index 0000000000..b7f4bf5246
> --- /dev/null
> +++ b/stdlib/stdc_count_ones_uc.c
> @@ -0,0 +1,25 @@
> +/* Count ones for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_ones_uc) (unsigned char x)
> +{
> +  return stdc_count_ones_uc (x);
> +}
> diff --git a/stdlib/stdc_count_ones_ui.c b/stdlib/stdc_count_ones_ui.c
> new file mode 100644
> index 0000000000..63e88ae651
> --- /dev/null
> +++ b/stdlib/stdc_count_ones_ui.c
> @@ -0,0 +1,25 @@
> +/* Count ones for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_ones_ui) (unsigned int x)
> +{
> +  return stdc_count_ones_ui (x);
> +}
> diff --git a/stdlib/stdc_count_ones_ul.c b/stdlib/stdc_count_ones_ul.c
> new file mode 100644
> index 0000000000..6ae7e0b785
> --- /dev/null
> +++ b/stdlib/stdc_count_ones_ul.c
> @@ -0,0 +1,25 @@
> +/* Count ones for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_ones_ul) (unsigned long int x)
> +{
> +  return stdc_count_ones_ul (x);
> +}
> diff --git a/stdlib/stdc_count_ones_ull.c b/stdlib/stdc_count_ones_ull.c
> new file mode 100644
> index 0000000000..89a67c65be
> --- /dev/null
> +++ b/stdlib/stdc_count_ones_ull.c
> @@ -0,0 +1,25 @@
> +/* Count ones for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_ones_ull) (unsigned long long int x)
> +{
> +  return stdc_count_ones_ull (x);
> +}
> diff --git a/stdlib/stdc_count_ones_us.c b/stdlib/stdc_count_ones_us.c
> new file mode 100644
> index 0000000000..f15babfc56
> --- /dev/null
> +++ b/stdlib/stdc_count_ones_us.c
> @@ -0,0 +1,25 @@
> +/* Count ones for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_ones_us) (unsigned short x)
> +{
> +  return stdc_count_ones_us (x);
> +}
> diff --git a/stdlib/stdc_count_zeros_uc.c b/stdlib/stdc_count_zeros_uc.c
> new file mode 100644
> index 0000000000..d797a3ad73
> --- /dev/null
> +++ b/stdlib/stdc_count_zeros_uc.c
> @@ -0,0 +1,25 @@
> +/* Count zeros for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_zeros_uc) (unsigned char x)
> +{
> +  return stdc_count_zeros_uc (x);
> +}
> diff --git a/stdlib/stdc_count_zeros_ui.c b/stdlib/stdc_count_zeros_ui.c
> new file mode 100644
> index 0000000000..7e5cd165f0
> --- /dev/null
> +++ b/stdlib/stdc_count_zeros_ui.c
> @@ -0,0 +1,25 @@
> +/* Count zeros for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_zeros_ui) (unsigned int x)
> +{
> +  return stdc_count_zeros_ui (x);
> +}
> diff --git a/stdlib/stdc_count_zeros_ul.c b/stdlib/stdc_count_zeros_ul.c
> new file mode 100644
> index 0000000000..24ea71f602
> --- /dev/null
> +++ b/stdlib/stdc_count_zeros_ul.c
> @@ -0,0 +1,25 @@
> +/* Count zeros for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_zeros_ul) (unsigned long int x)
> +{
> +  return stdc_count_zeros_ul (x);
> +}
> diff --git a/stdlib/stdc_count_zeros_ull.c b/stdlib/stdc_count_zeros_ull.c
> new file mode 100644
> index 0000000000..d594d86141
> --- /dev/null
> +++ b/stdlib/stdc_count_zeros_ull.c
> @@ -0,0 +1,25 @@
> +/* Count zeros for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_zeros_ull) (unsigned long long int x)
> +{
> +  return stdc_count_zeros_ull (x);
> +}
> diff --git a/stdlib/stdc_count_zeros_us.c b/stdlib/stdc_count_zeros_us.c
> new file mode 100644
> index 0000000000..0492c39031
> --- /dev/null
> +++ b/stdlib/stdc_count_zeros_us.c
> @@ -0,0 +1,25 @@
> +/* Count zeros for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_count_zeros_us) (unsigned short x)
> +{
> +  return stdc_count_zeros_us (x);
> +}
> diff --git a/stdlib/stdc_first_leading_one_uc.c b/stdlib/stdc_first_leading_one_uc.c
> new file mode 100644
> index 0000000000..1f37a7afb8
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_one_uc.c
> @@ -0,0 +1,25 @@
> +/* First leading one for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_one_uc) (unsigned char x)
> +{
> +  return stdc_first_leading_one_uc (x);
> +}
> diff --git a/stdlib/stdc_first_leading_one_ui.c b/stdlib/stdc_first_leading_one_ui.c
> new file mode 100644
> index 0000000000..5a97315811
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_one_ui.c
> @@ -0,0 +1,25 @@
> +/* First leading one for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_one_ui) (unsigned int x)
> +{
> +  return stdc_first_leading_one_ui (x);
> +}
> diff --git a/stdlib/stdc_first_leading_one_ul.c b/stdlib/stdc_first_leading_one_ul.c
> new file mode 100644
> index 0000000000..bf5589afe7
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_one_ul.c
> @@ -0,0 +1,25 @@
> +/* First leading one for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_one_ul) (unsigned long int x)
> +{
> +  return stdc_first_leading_one_ul (x);
> +}
> diff --git a/stdlib/stdc_first_leading_one_ull.c b/stdlib/stdc_first_leading_one_ull.c
> new file mode 100644
> index 0000000000..a07e121cb0
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_one_ull.c
> @@ -0,0 +1,25 @@
> +/* First leading one for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_one_ull) (unsigned long long int x)
> +{
> +  return stdc_first_leading_one_ull (x);
> +}
> diff --git a/stdlib/stdc_first_leading_one_us.c b/stdlib/stdc_first_leading_one_us.c
> new file mode 100644
> index 0000000000..95a7427986
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_one_us.c
> @@ -0,0 +1,25 @@
> +/* First leading one for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_one_us) (unsigned short x)
> +{
> +  return stdc_first_leading_one_us (x);
> +}
> diff --git a/stdlib/stdc_first_leading_zero_uc.c b/stdlib/stdc_first_leading_zero_uc.c
> new file mode 100644
> index 0000000000..89830d125f
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_zero_uc.c
> @@ -0,0 +1,25 @@
> +/* First leading zero for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_zero_uc) (unsigned char x)
> +{
> +  return stdc_first_leading_zero_uc (x);
> +}
> diff --git a/stdlib/stdc_first_leading_zero_ui.c b/stdlib/stdc_first_leading_zero_ui.c
> new file mode 100644
> index 0000000000..9c14c3e5d0
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_zero_ui.c
> @@ -0,0 +1,25 @@
> +/* First leading zero for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_zero_ui) (unsigned int x)
> +{
> +  return stdc_first_leading_zero_ui (x);
> +}
> diff --git a/stdlib/stdc_first_leading_zero_ul.c b/stdlib/stdc_first_leading_zero_ul.c
> new file mode 100644
> index 0000000000..24439174d4
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_zero_ul.c
> @@ -0,0 +1,25 @@
> +/* First leading zero for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_zero_ul) (unsigned long int x)
> +{
> +  return stdc_first_leading_zero_ul (x);
> +}
> diff --git a/stdlib/stdc_first_leading_zero_ull.c b/stdlib/stdc_first_leading_zero_ull.c
> new file mode 100644
> index 0000000000..7cca7db3d1
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_zero_ull.c
> @@ -0,0 +1,25 @@
> +/* First leading zero for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_zero_ull) (unsigned long long int x)
> +{
> +  return stdc_first_leading_zero_ull (x);
> +}
> diff --git a/stdlib/stdc_first_leading_zero_us.c b/stdlib/stdc_first_leading_zero_us.c
> new file mode 100644
> index 0000000000..9cdf8712b3
> --- /dev/null
> +++ b/stdlib/stdc_first_leading_zero_us.c
> @@ -0,0 +1,25 @@
> +/* First leading zero for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_leading_zero_us) (unsigned short x)
> +{
> +  return stdc_first_leading_zero_us (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_one_uc.c b/stdlib/stdc_first_trailing_one_uc.c
> new file mode 100644
> index 0000000000..8253cc8f8d
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_one_uc.c
> @@ -0,0 +1,25 @@
> +/* First trailing one for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_one_uc) (unsigned char x)
> +{
> +  return stdc_first_trailing_one_uc (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_one_ui.c b/stdlib/stdc_first_trailing_one_ui.c
> new file mode 100644
> index 0000000000..84207af689
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_one_ui.c
> @@ -0,0 +1,25 @@
> +/* First trailing one for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_one_ui) (unsigned int x)
> +{
> +  return stdc_first_trailing_one_ui (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_one_ul.c b/stdlib/stdc_first_trailing_one_ul.c
> new file mode 100644
> index 0000000000..4a9283ae41
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_one_ul.c
> @@ -0,0 +1,25 @@
> +/* First trailing one for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_one_ul) (unsigned long int x)
> +{
> +  return stdc_first_trailing_one_ul (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_one_ull.c b/stdlib/stdc_first_trailing_one_ull.c
> new file mode 100644
> index 0000000000..a15637fa70
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_one_ull.c
> @@ -0,0 +1,25 @@
> +/* First trailing one for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_one_ull) (unsigned long long int x)
> +{
> +  return stdc_first_trailing_one_ull (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_one_us.c b/stdlib/stdc_first_trailing_one_us.c
> new file mode 100644
> index 0000000000..a7803e8c6d
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_one_us.c
> @@ -0,0 +1,25 @@
> +/* First trailing one for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_one_us) (unsigned short x)
> +{
> +  return stdc_first_trailing_one_us (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_zero_uc.c b/stdlib/stdc_first_trailing_zero_uc.c
> new file mode 100644
> index 0000000000..de5aa90dc0
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_zero_uc.c
> @@ -0,0 +1,25 @@
> +/* First trailing zero for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_zero_uc) (unsigned char x)
> +{
> +  return stdc_first_trailing_zero_uc (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_zero_ui.c b/stdlib/stdc_first_trailing_zero_ui.c
> new file mode 100644
> index 0000000000..ec54242a1b
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_zero_ui.c
> @@ -0,0 +1,25 @@
> +/* First trailing zero for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_zero_ui) (unsigned int x)
> +{
> +  return stdc_first_trailing_zero_ui (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_zero_ul.c b/stdlib/stdc_first_trailing_zero_ul.c
> new file mode 100644
> index 0000000000..1f63408827
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_zero_ul.c
> @@ -0,0 +1,25 @@
> +/* First trailing zero for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_zero_ul) (unsigned long int x)
> +{
> +  return stdc_first_trailing_zero_ul (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_zero_ull.c b/stdlib/stdc_first_trailing_zero_ull.c
> new file mode 100644
> index 0000000000..89855e4378
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_zero_ull.c
> @@ -0,0 +1,25 @@
> +/* First trailing zero for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_zero_ull) (unsigned long long int x)
> +{
> +  return stdc_first_trailing_zero_ull (x);
> +}
> diff --git a/stdlib/stdc_first_trailing_zero_us.c b/stdlib/stdc_first_trailing_zero_us.c
> new file mode 100644
> index 0000000000..fa4d966412
> --- /dev/null
> +++ b/stdlib/stdc_first_trailing_zero_us.c
> @@ -0,0 +1,25 @@
> +/* First trailing zero for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_first_trailing_zero_us) (unsigned short x)
> +{
> +  return stdc_first_trailing_zero_us (x);
> +}
> diff --git a/stdlib/stdc_has_single_bit_uc.c b/stdlib/stdc_has_single_bit_uc.c
> new file mode 100644
> index 0000000000..16f917131b
> --- /dev/null
> +++ b/stdlib/stdc_has_single_bit_uc.c
> @@ -0,0 +1,25 @@
> +/* Single-bit check for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +_Bool
> +(stdc_has_single_bit_uc) (unsigned char x)
> +{
> +  return stdc_has_single_bit_uc (x);
> +}
> diff --git a/stdlib/stdc_has_single_bit_ui.c b/stdlib/stdc_has_single_bit_ui.c
> new file mode 100644
> index 0000000000..0c8388ccf6
> --- /dev/null
> +++ b/stdlib/stdc_has_single_bit_ui.c
> @@ -0,0 +1,25 @@
> +/* Single-bit check for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +_Bool
> +(stdc_has_single_bit_ui) (unsigned int x)
> +{
> +  return stdc_has_single_bit_ui (x);
> +}
> diff --git a/stdlib/stdc_has_single_bit_ul.c b/stdlib/stdc_has_single_bit_ul.c
> new file mode 100644
> index 0000000000..2e5839b08a
> --- /dev/null
> +++ b/stdlib/stdc_has_single_bit_ul.c
> @@ -0,0 +1,25 @@
> +/* Single-bit check for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +_Bool
> +(stdc_has_single_bit_ul) (unsigned long int x)
> +{
> +  return stdc_has_single_bit_ul (x);
> +}
> diff --git a/stdlib/stdc_has_single_bit_ull.c b/stdlib/stdc_has_single_bit_ull.c
> new file mode 100644
> index 0000000000..e0358af719
> --- /dev/null
> +++ b/stdlib/stdc_has_single_bit_ull.c
> @@ -0,0 +1,25 @@
> +/* Single-bit check for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +_Bool
> +(stdc_has_single_bit_ull) (unsigned long long int x)
> +{
> +  return stdc_has_single_bit_ull (x);
> +}
> diff --git a/stdlib/stdc_has_single_bit_us.c b/stdlib/stdc_has_single_bit_us.c
> new file mode 100644
> index 0000000000..9e86a52647
> --- /dev/null
> +++ b/stdlib/stdc_has_single_bit_us.c
> @@ -0,0 +1,25 @@
> +/* Single-bit check for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +_Bool
> +(stdc_has_single_bit_us) (unsigned short x)
> +{
> +  return stdc_has_single_bit_us (x);
> +}
> diff --git a/stdlib/stdc_leading_ones_uc.c b/stdlib/stdc_leading_ones_uc.c
> new file mode 100644
> index 0000000000..f366e08c98
> --- /dev/null
> +++ b/stdlib/stdc_leading_ones_uc.c
> @@ -0,0 +1,25 @@
> +/* Count leading ones for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_ones_uc) (unsigned char x)
> +{
> +  return stdc_leading_ones_uc (x);
> +}
> diff --git a/stdlib/stdc_leading_ones_ui.c b/stdlib/stdc_leading_ones_ui.c
> new file mode 100644
> index 0000000000..fae76eb0c1
> --- /dev/null
> +++ b/stdlib/stdc_leading_ones_ui.c
> @@ -0,0 +1,25 @@
> +/* Count leading ones for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_ones_ui) (unsigned int x)
> +{
> +  return stdc_leading_ones_ui (x);
> +}
> diff --git a/stdlib/stdc_leading_ones_ul.c b/stdlib/stdc_leading_ones_ul.c
> new file mode 100644
> index 0000000000..cac5bff1d4
> --- /dev/null
> +++ b/stdlib/stdc_leading_ones_ul.c
> @@ -0,0 +1,25 @@
> +/* Count leading ones for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_ones_ul) (unsigned long int x)
> +{
> +  return stdc_leading_ones_ul (x);
> +}
> diff --git a/stdlib/stdc_leading_ones_ull.c b/stdlib/stdc_leading_ones_ull.c
> new file mode 100644
> index 0000000000..3fd8767ebe
> --- /dev/null
> +++ b/stdlib/stdc_leading_ones_ull.c
> @@ -0,0 +1,25 @@
> +/* Count leading ones for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_ones_ull) (unsigned long long int x)
> +{
> +  return stdc_leading_ones_ull (x);
> +}
> diff --git a/stdlib/stdc_leading_ones_us.c b/stdlib/stdc_leading_ones_us.c
> new file mode 100644
> index 0000000000..98b127d888
> --- /dev/null
> +++ b/stdlib/stdc_leading_ones_us.c
> @@ -0,0 +1,25 @@
> +/* Count leading ones for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_ones_us) (unsigned short x)
> +{
> +  return stdc_leading_ones_us (x);
> +}
> diff --git a/stdlib/stdc_leading_zeros_uc.c b/stdlib/stdc_leading_zeros_uc.c
> new file mode 100644
> index 0000000000..f5a5641479
> --- /dev/null
> +++ b/stdlib/stdc_leading_zeros_uc.c
> @@ -0,0 +1,25 @@
> +/* Count leading zeros for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_zeros_uc) (unsigned char x)
> +{
> +  return stdc_leading_zeros_uc (x);
> +}
> diff --git a/stdlib/stdc_leading_zeros_ui.c b/stdlib/stdc_leading_zeros_ui.c
> new file mode 100644
> index 0000000000..e307f4f6a8
> --- /dev/null
> +++ b/stdlib/stdc_leading_zeros_ui.c
> @@ -0,0 +1,25 @@
> +/* Count leading zeros for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_zeros_ui) (unsigned int x)
> +{
> +  return stdc_leading_zeros_ui (x);
> +}
> diff --git a/stdlib/stdc_leading_zeros_ul.c b/stdlib/stdc_leading_zeros_ul.c
> new file mode 100644
> index 0000000000..ebca92a91c
> --- /dev/null
> +++ b/stdlib/stdc_leading_zeros_ul.c
> @@ -0,0 +1,25 @@
> +/* Count leading zeros for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_zeros_ul) (unsigned long int x)
> +{
> +  return stdc_leading_zeros_ul (x);
> +}
> diff --git a/stdlib/stdc_leading_zeros_ull.c b/stdlib/stdc_leading_zeros_ull.c
> new file mode 100644
> index 0000000000..5f337e4c1e
> --- /dev/null
> +++ b/stdlib/stdc_leading_zeros_ull.c
> @@ -0,0 +1,25 @@
> +/* Count leading zeros for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_zeros_ull) (unsigned long long int x)
> +{
> +  return stdc_leading_zeros_ull (x);
> +}
> diff --git a/stdlib/stdc_leading_zeros_us.c b/stdlib/stdc_leading_zeros_us.c
> new file mode 100644
> index 0000000000..27eb458050
> --- /dev/null
> +++ b/stdlib/stdc_leading_zeros_us.c
> @@ -0,0 +1,25 @@
> +/* Count leading zeros for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_leading_zeros_us) (unsigned short x)
> +{
> +  return stdc_leading_zeros_us (x);
> +}
> diff --git a/stdlib/stdc_trailing_ones_uc.c b/stdlib/stdc_trailing_ones_uc.c
> new file mode 100644
> index 0000000000..4a7e85a6be
> --- /dev/null
> +++ b/stdlib/stdc_trailing_ones_uc.c
> @@ -0,0 +1,25 @@
> +/* Count trailing ones for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_ones_uc) (unsigned char x)
> +{
> +  return stdc_trailing_ones_uc (x);
> +}
> diff --git a/stdlib/stdc_trailing_ones_ui.c b/stdlib/stdc_trailing_ones_ui.c
> new file mode 100644
> index 0000000000..30b5d6209f
> --- /dev/null
> +++ b/stdlib/stdc_trailing_ones_ui.c
> @@ -0,0 +1,25 @@
> +/* Count trailing ones for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_ones_ui) (unsigned int x)
> +{
> +  return stdc_trailing_ones_ui (x);
> +}
> diff --git a/stdlib/stdc_trailing_ones_ul.c b/stdlib/stdc_trailing_ones_ul.c
> new file mode 100644
> index 0000000000..33a46eff62
> --- /dev/null
> +++ b/stdlib/stdc_trailing_ones_ul.c
> @@ -0,0 +1,25 @@
> +/* Count trailing ones for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_ones_ul) (unsigned long int x)
> +{
> +  return stdc_trailing_ones_ul (x);
> +}
> diff --git a/stdlib/stdc_trailing_ones_ull.c b/stdlib/stdc_trailing_ones_ull.c
> new file mode 100644
> index 0000000000..678f27868c
> --- /dev/null
> +++ b/stdlib/stdc_trailing_ones_ull.c
> @@ -0,0 +1,25 @@
> +/* Count trailing ones for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_ones_ull) (unsigned long long int x)
> +{
> +  return stdc_trailing_ones_ull (x);
> +}
> diff --git a/stdlib/stdc_trailing_ones_us.c b/stdlib/stdc_trailing_ones_us.c
> new file mode 100644
> index 0000000000..e91038460e
> --- /dev/null
> +++ b/stdlib/stdc_trailing_ones_us.c
> @@ -0,0 +1,25 @@
> +/* Count trailing ones for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_ones_us) (unsigned short x)
> +{
> +  return stdc_trailing_ones_us (x);
> +}
> diff --git a/stdlib/stdc_trailing_zeros_uc.c b/stdlib/stdc_trailing_zeros_uc.c
> new file mode 100644
> index 0000000000..45e1b2ef9f
> --- /dev/null
> +++ b/stdlib/stdc_trailing_zeros_uc.c
> @@ -0,0 +1,25 @@
> +/* Count trailing zeros for unsigned char.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_zeros_uc) (unsigned char x)
> +{
> +  return stdc_trailing_zeros_uc (x);
> +}
> diff --git a/stdlib/stdc_trailing_zeros_ui.c b/stdlib/stdc_trailing_zeros_ui.c
> new file mode 100644
> index 0000000000..a4cf3047aa
> --- /dev/null
> +++ b/stdlib/stdc_trailing_zeros_ui.c
> @@ -0,0 +1,25 @@
> +/* Count trailing zeros for unsigned int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_zeros_ui) (unsigned int x)
> +{
> +  return stdc_trailing_zeros_ui (x);
> +}
> diff --git a/stdlib/stdc_trailing_zeros_ul.c b/stdlib/stdc_trailing_zeros_ul.c
> new file mode 100644
> index 0000000000..1a9a34776b
> --- /dev/null
> +++ b/stdlib/stdc_trailing_zeros_ul.c
> @@ -0,0 +1,25 @@
> +/* Count trailing zeros for unsigned long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_zeros_ul) (unsigned long int x)
> +{
> +  return stdc_trailing_zeros_ul (x);
> +}
> diff --git a/stdlib/stdc_trailing_zeros_ull.c b/stdlib/stdc_trailing_zeros_ull.c
> new file mode 100644
> index 0000000000..4d67050119
> --- /dev/null
> +++ b/stdlib/stdc_trailing_zeros_ull.c
> @@ -0,0 +1,25 @@
> +/* Count trailing zeros for unsigned long long int.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_zeros_ull) (unsigned long long int x)
> +{
> +  return stdc_trailing_zeros_ull (x);
> +}
> diff --git a/stdlib/stdc_trailing_zeros_us.c b/stdlib/stdc_trailing_zeros_us.c
> new file mode 100644
> index 0000000000..a2c515253a
> --- /dev/null
> +++ b/stdlib/stdc_trailing_zeros_us.c
> @@ -0,0 +1,25 @@
> +/* Count trailing zeros for unsigned short.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +
> +unsigned int
> +(stdc_trailing_zeros_us) (unsigned short x)
> +{
> +  return stdc_trailing_zeros_us (x);
> +}
> diff --git a/stdlib/stdint.h b/stdlib/stdint.h
> index 165a201ada..c5e586e62b 100644
> --- a/stdlib/stdint.h
> +++ b/stdlib/stdint.h
> @@ -38,18 +38,7 @@
>
>
>  /* Small types.  */
> -
> -/* Signed.  */
> -typedef __int_least8_t int_least8_t;
> -typedef __int_least16_t int_least16_t;
> -typedef __int_least32_t int_least32_t;
> -typedef __int_least64_t int_least64_t;
> -
> -/* Unsigned.  */
> -typedef __uint_least8_t uint_least8_t;
> -typedef __uint_least16_t uint_least16_t;
> -typedef __uint_least32_t uint_least32_t;
> -typedef __uint_least64_t uint_least64_t;
> +#include <bits/stdint-least.h>
>
>
>  /* Fast types.  */
> diff --git a/stdlib/tst-stdbit-Wconversion.c b/stdlib/tst-stdbit-Wconversion.c
> new file mode 100644
> index 0000000000..8fda0f5c27
> --- /dev/null
> +++ b/stdlib/tst-stdbit-Wconversion.c
> @@ -0,0 +1,107 @@
> +/* Test <stdbit.h> type-generic macros with -Wconversion.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <stdbit.h>
> +#include <support/check.h>
> +
> +unsigned char uc;
> +unsigned short us;
> +unsigned int ui;
> +unsigned long int ul;
> +unsigned long long int ull;
> +
> +static int
> +do_test (void)
> +{
> +  /* The main point of this test is the compile-time test that there
> +     are no -Wconversion warnings from the type-generic macros, not
> +     the runtime execution of those macros.  */
> +  (void) stdc_leading_zeros (uc);
> +  (void) stdc_leading_zeros (us);
> +  (void) stdc_leading_zeros (ui);
> +  (void) stdc_leading_zeros (ul);
> +  (void) stdc_leading_zeros (ull);
> +  (void) stdc_leading_ones (uc);
> +  (void) stdc_leading_ones (us);
> +  (void) stdc_leading_ones (ui);
> +  (void) stdc_leading_ones (ul);
> +  (void) stdc_leading_ones (ull);
> +  (void) stdc_trailing_zeros (uc);
> +  (void) stdc_trailing_zeros (us);
> +  (void) stdc_trailing_zeros (ui);
> +  (void) stdc_trailing_zeros (ul);
> +  (void) stdc_trailing_zeros (ull);
> +  (void) stdc_trailing_ones (uc);
> +  (void) stdc_trailing_ones (us);
> +  (void) stdc_trailing_ones (ui);
> +  (void) stdc_trailing_ones (ul);
> +  (void) stdc_trailing_ones (ull);
> +  (void) stdc_first_leading_zero (uc);
> +  (void) stdc_first_leading_zero (us);
> +  (void) stdc_first_leading_zero (ui);
> +  (void) stdc_first_leading_zero (ul);
> +  (void) stdc_first_leading_zero (ull);
> +  (void) stdc_first_leading_one (uc);
> +  (void) stdc_first_leading_one (us);
> +  (void) stdc_first_leading_one (ui);
> +  (void) stdc_first_leading_one (ul);
> +  (void) stdc_first_leading_one (ull);
> +  (void) stdc_first_trailing_zero (uc);
> +  (void) stdc_first_trailing_zero (us);
> +  (void) stdc_first_trailing_zero (ui);
> +  (void) stdc_first_trailing_zero (ul);
> +  (void) stdc_first_trailing_zero (ull);
> +  (void) stdc_first_trailing_one (uc);
> +  (void) stdc_first_trailing_one (us);
> +  (void) stdc_first_trailing_one (ui);
> +  (void) stdc_first_trailing_one (ul);
> +  (void) stdc_first_trailing_one (ull);
> +  (void) stdc_count_zeros (uc);
> +  (void) stdc_count_zeros (us);
> +  (void) stdc_count_zeros (ui);
> +  (void) stdc_count_zeros (ul);
> +  (void) stdc_count_zeros (ull);
> +  (void) stdc_count_ones (uc);
> +  (void) stdc_count_ones (us);
> +  (void) stdc_count_ones (ui);
> +  (void) stdc_count_ones (ul);
> +  (void) stdc_count_ones (ull);
> +  (void) stdc_has_single_bit (uc);
> +  (void) stdc_has_single_bit (us);
> +  (void) stdc_has_single_bit (ui);
> +  (void) stdc_has_single_bit (ul);
> +  (void) stdc_has_single_bit (ull);
> +  (void) stdc_bit_width (uc);
> +  (void) stdc_bit_width (us);
> +  (void) stdc_bit_width (ui);
> +  (void) stdc_bit_width (ul);
> +  (void) stdc_bit_width (ull);
> +  (void) stdc_bit_floor (uc);
> +  (void) stdc_bit_floor (us);
> +  (void) stdc_bit_floor (ui);
> +  (void) stdc_bit_floor (ul);
> +  (void) stdc_bit_floor (ull);
> +  (void) stdc_bit_ceil (uc);
> +  (void) stdc_bit_ceil (us);
> +  (void) stdc_bit_ceil (ui);
> +  (void) stdc_bit_ceil (ul);
> +  (void) stdc_bit_ceil (ull);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdbit.h b/stdlib/tst-stdbit.h
> new file mode 100644
> index 0000000000..7b9d5cbec2
> --- /dev/null
> +++ b/stdlib/tst-stdbit.h
> @@ -0,0 +1,198 @@
> +/* Common test support for <stdbit.h> tests.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#ifndef _TST_STDBIT_H
> +#define _TST_STDBIT_H
> +
> +#include <stdbit.h>
> +#include <stdbool.h>
> +
> +#include <array_length.h>
> +#include <support/check.h>
> +
> +struct stdbit_test
> +{
> +  /* The test input.  */
> +  uint64_t x;
> +  /* Expected results if that test input is converted to 8, 16, 32 or
> +     64 bits and then passed to the function under test for that
> +     width.  */
> +  uint64_t res_8, res_16, res_32, res_64;
> +};
> +
> +#define TEST_TYPE(EXPR, TYPE)                                          \
> +  _Static_assert (_Generic ((EXPR), TYPE: 1, default: 0), "bad type")
> +
> +/* Test a <stdbit.h> function / macro.  For each function family, and
> +   each input type, we test both with and without macros from the
> +   header being used, both with a possibly wider argument being passed
> +   (that must be truncated by the prototype) and with the argument
> +   truncated in the caller, as well as testing the type-generic macro
> +   (with the argument truncated in the caller).  Also test that the
> +   results have the correct type; also test truncation from
> +   floating-point arguments (valid for functions, including with macro
> +   expansion, because the prototype must implicitly convert to integer
> +   type; not valid for the type-generic macros).  Also test that the
> +   argument is evaluated exactly once.  Also test the macros are
> +   usable (e.g. in typeof) at top level (GCC doesn't allow ({})
> +   outside functions: bug 93239).  */
> +
> +#define TEST_STDBIT_T(FUNC, X, RES, TTYPE, TYPE, SUFFIX)               \
> +  do                                                                   \
> +    {                                                                  \
> +      TEST_COMPARE (FUNC ## SUFFIX (X), (RES));                                \
> +      TEST_TYPE (FUNC ## SUFFIX (X), TTYPE);                           \
> +      TEST_COMPARE ((FUNC ## SUFFIX) (X), (RES));                      \
> +      TEST_TYPE ((FUNC ## SUFFIX) (X), TTYPE);                         \
> +      TEST_COMPARE (FUNC ## SUFFIX ((TYPE) (X)), (RES));               \
> +      TEST_TYPE (FUNC ## SUFFIX ((TYPE) (X)), TTYPE);                  \
> +      TEST_COMPARE ((FUNC ## SUFFIX) ((TYPE) (X)), (RES));             \
> +      TEST_TYPE ((FUNC ## SUFFIX) ((TYPE) (X)), TTYPE);                        \
> +      TEST_COMPARE (FUNC ((TYPE) (X)), (RES));                         \
> +      TEST_TYPE (FUNC ((TYPE) (X)), TTYPE);                            \
> +      if (sizeof (TYPE) <= 2)                                          \
> +       {                                                               \
> +         TEST_COMPARE (FUNC ## SUFFIX ((float) (TYPE) (X)), (RES));    \
> +         TEST_TYPE (FUNC ## SUFFIX ((float) (TYPE) (X)), TTYPE);       \
> +         TEST_COMPARE ((FUNC ## SUFFIX) ((float) (TYPE) (X)), (RES));  \
> +         TEST_TYPE ((FUNC ## SUFFIX) ((float) (TYPE) (X)), TTYPE);     \
> +       }                                                               \
> +      if (sizeof (TYPE) <= 4)                                          \
> +       {                                                               \
> +         TEST_COMPARE (FUNC ## SUFFIX ((double) (TYPE) (X)), (RES));   \
> +         TEST_TYPE (FUNC ## SUFFIX ((double) (TYPE) (X)), TTYPE);      \
> +         TEST_COMPARE ((FUNC ## SUFFIX) ((double) (TYPE) (X)), (RES)); \
> +         TEST_TYPE ((FUNC ## SUFFIX) ((double) (TYPE) (X)), TTYPE);    \
> +         TEST_COMPARE (FUNC ## SUFFIX ((long double) (TYPE) (X)), (RES)); \
> +         TEST_TYPE (FUNC ## SUFFIX ((long double) (TYPE) (X)), TTYPE); \
> +         TEST_COMPARE ((FUNC ## SUFFIX) ((long double) (TYPE) (X)), (RES)); \
> +         TEST_TYPE ((FUNC ## SUFFIX) ((long double) (TYPE) (X)), TTYPE); \
> +       }                                                               \
> +      TYPE xt = (X);                                                   \
> +      TEST_COMPARE (FUNC ## SUFFIX (xt++), (RES));                     \
> +      TEST_COMPARE (xt, (TYPE) ((X) + 1));                             \
> +      xt = (X);                                                                \
> +      TEST_COMPARE (FUNC (xt++), (RES));                               \
> +      TEST_COMPARE (xt, (TYPE) ((X) + 1));                             \
> +    }                                                                  \
> +  while (0)
> +
> +#define TEST_STDBIT_UI(FUNC, INPUTS)                   \
> +  do                                                   \
> +    for (int i = 0; i < array_length (INPUTS); i++)    \
> +      {                                                        \
> +       uint64_t x = (INPUTS)[i].x;                     \
> +       unsigned int res_8 = (INPUTS)[i].res_8;         \
> +       unsigned int res_16 = (INPUTS)[i].res_16;       \
> +       unsigned int res_32 = (INPUTS)[i].res_32;       \
> +       unsigned int res_64 = (INPUTS)[i].res_64;       \
> +       unsigned int res_l = (sizeof (long int) == 4    \
> +                             ? res_32 : res_64);       \
> +       TEST_STDBIT_T (FUNC, x, res_8, unsigned int,    \
> +                      unsigned char, _uc);             \
> +       TEST_STDBIT_T (FUNC, x, res_16, unsigned int,   \
> +                      unsigned short, _us);            \
> +       TEST_STDBIT_T (FUNC, x, res_32, unsigned int,   \
> +                      unsigned int, _ui);              \
> +       TEST_STDBIT_T (FUNC, x, res_l, unsigned int,    \
> +                      unsigned long int, _ul);         \
> +       TEST_STDBIT_T (FUNC, x, res_64, unsigned int,   \
> +                      unsigned long long int, _ull);   \
> +      }                                                        \
> +  while (0)
> +
> +#define TEST_STDBIT_BOOL(FUNC, INPUTS)                                 \
> +  do                                                                   \
> +    for (int i = 0; i < array_length (INPUTS); i++)                    \
> +      {                                                                        \
> +       uint64_t x = (INPUTS)[i].x;                                     \
> +       bool res_8 = (INPUTS)[i].res_8;                                 \
> +       bool res_16 = (INPUTS)[i].res_16;                               \
> +       bool res_32 = (INPUTS)[i].res_32;                               \
> +       bool res_64 = (INPUTS)[i].res_64;                               \
> +       bool res_l = (sizeof (long int) == 4 ? res_32 : res_64);        \
> +       TEST_STDBIT_T (FUNC, x, res_8, _Bool, unsigned char, _uc);      \
> +       TEST_STDBIT_T (FUNC, x, res_16, _Bool, unsigned short, _us);    \
> +       TEST_STDBIT_T (FUNC, x, res_32, _Bool, unsigned int, _ui);      \
> +       TEST_STDBIT_T (FUNC, x, res_l, _Bool, unsigned long int, _ul);  \
> +       TEST_STDBIT_T (FUNC, x, res_64, _Bool,                          \
> +                      unsigned long long int, _ull);                   \
> +      }                                                                        \
> +  while (0)
> +
> +#define TEST_STDBIT_SAME(FUNC, INPUTS)                         \
> +  do                                                           \
> +    for (int i = 0; i < array_length (INPUTS); i++)            \
> +      {                                                                \
> +       uint64_t x = (INPUTS)[i].x;                             \
> +       unsigned char res_8 = (INPUTS)[i].res_8;                \
> +       unsigned short res_16 = (INPUTS)[i].res_16;             \
> +       unsigned int res_32 = (INPUTS)[i].res_32;               \
> +       unsigned long long int res_64 = (INPUTS)[i].res_64;     \
> +       unsigned long int res_l = (sizeof (long int) == 4       \
> +                                  ? res_32 : res_64);          \
> +       TEST_STDBIT_T (FUNC, x, res_8, unsigned char,           \
> +                      unsigned char, _uc);                     \
> +       TEST_STDBIT_T (FUNC, x, res_16, unsigned short,         \
> +                      unsigned short, _us);                    \
> +       TEST_STDBIT_T (FUNC, x, res_32, unsigned int,           \
> +                      unsigned int, _ui);                      \
> +       TEST_STDBIT_T (FUNC, x, res_l, unsigned long int,       \
> +                      unsigned long int, _ul);                 \
> +       TEST_STDBIT_T (FUNC, x, res_64, unsigned long long int, \
> +                      unsigned long long int, _ull);           \
> +      }                                                                \
> +  while (0)
> +
> +#define TEST_STDBIT_UI_TOPLEVEL(FUNC)                          \
> +  TEST_TYPE (FUNC ## _uc ((unsigned char) 0), unsigned int);   \
> +  TEST_TYPE (FUNC ((unsigned char) 0), unsigned int);          \
> +  TEST_TYPE (FUNC ## _us ((unsigned short) 0), unsigned int);  \
> +  TEST_TYPE (FUNC ((unsigned short) 0), unsigned int);         \
> +  TEST_TYPE (FUNC ## _ui (0U), unsigned int);                  \
> +  TEST_TYPE (FUNC (0U), unsigned int);                         \
> +  TEST_TYPE (FUNC ## _ul (0UL), unsigned int);                 \
> +  TEST_TYPE (FUNC (0UL), unsigned int);                                \
> +  TEST_TYPE (FUNC ## _ull (0ULL), unsigned int);               \
> +  TEST_TYPE (FUNC (0ULL), unsigned int)
> +
> +#define TEST_STDBIT_BOOL_TOPLEVEL(FUNC)                        \
> +  TEST_TYPE (FUNC ## _uc ((unsigned char) 0), _Bool);  \
> +  TEST_TYPE (FUNC ((unsigned char) 0), _Bool);         \
> +  TEST_TYPE (FUNC ## _us ((unsigned short) 0), _Bool); \
> +  TEST_TYPE (FUNC ((unsigned short) 0), _Bool);                \
> +  TEST_TYPE (FUNC ## _ui (0U), _Bool);                 \
> +  TEST_TYPE (FUNC (0U), _Bool);                                \
> +  TEST_TYPE (FUNC ## _ul (0UL), _Bool);                        \
> +  TEST_TYPE (FUNC (0UL), _Bool);                       \
> +  TEST_TYPE (FUNC ## _ull (0ULL), _Bool);              \
> +  TEST_TYPE (FUNC (0ULL), _Bool)
> +
> +#define TEST_STDBIT_SAME_TOPLEVEL(FUNC)                                \
> +  TEST_TYPE (FUNC ## _uc ((unsigned char) 0), unsigned char);  \
> +  TEST_TYPE (FUNC ((unsigned char) 0), unsigned char);         \
> +  TEST_TYPE (FUNC ## _us ((unsigned short) 0), unsigned short);        \
> +  TEST_TYPE (FUNC ((unsigned short) 0), unsigned short);       \
> +  TEST_TYPE (FUNC ## _ui (0U), unsigned int);                  \
> +  TEST_TYPE (FUNC (0U), unsigned int);                         \
> +  TEST_TYPE (FUNC ## _ul (0UL), unsigned long int);            \
> +  TEST_TYPE (FUNC (0UL), unsigned long int);                   \
> +  TEST_TYPE (FUNC ## _ull (0ULL), unsigned long long int);     \
> +  TEST_TYPE (FUNC (0ULL), unsigned long long int)
> +
> +#endif
> diff --git a/stdlib/tst-stdc_bit_ceil.c b/stdlib/tst-stdc_bit_ceil.c
> new file mode 100644
> index 0000000000..ad4edbab93
> --- /dev/null
> +++ b/stdlib/tst-stdc_bit_ceil.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_bit_ceil functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0x1, 0x1, 0x1, 0x1ULL },
> +    { 0x1ULL, 0x1, 0x1, 0x1, 0x1ULL },
> +    { 0x2ULL, 0x2, 0x2, 0x2, 0x2ULL },
> +    { 0x3ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x4ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x5ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x6ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x7ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x8ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x9ULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xaULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xbULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xcULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xdULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xeULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0xfULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x10ULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x11ULL, 0x20, 0x20, 0x20, 0x20ULL },
> +    { 0x12ULL, 0x20, 0x20, 0x20, 0x20ULL },
> +    { 0x1fULL, 0x20, 0x20, 0x20, 0x20ULL },
> +    { 0x20ULL, 0x20, 0x20, 0x20, 0x20ULL },
> +    { 0x7fULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0x80ULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0x81ULL, 0, 0x100, 0x100, 0x100ULL },
> +    { 0x9aULL, 0, 0x100, 0x100, 0x100ULL },
> +    { 0xf3ULL, 0, 0x100, 0x100, 0x100ULL },
> +    { 0xffULL, 0, 0x100, 0x100, 0x100ULL },
> +    { 0x100ULL, 0x1, 0x100, 0x100, 0x100ULL },
> +    { 0x101ULL, 0x1, 0x200, 0x200, 0x200ULL },
> +    { 0x102ULL, 0x2, 0x200, 0x200, 0x200ULL },
> +    { 0x1feULL, 0, 0x200, 0x200, 0x200ULL },
> +    { 0x1ffULL, 0, 0x200, 0x200, 0x200ULL },
> +    { 0x200ULL, 0x1, 0x200, 0x200, 0x200ULL },
> +    { 0x234ULL, 0x40, 0x400, 0x400, 0x400ULL },
> +    { 0x4567ULL, 0x80, 0x8000, 0x8000, 0x8000ULL },
> +    { 0x7fffULL, 0, 0x8000, 0x8000, 0x8000ULL },
> +    { 0x8000ULL, 0x1, 0x8000, 0x8000, 0x8000ULL },
> +    { 0x8001ULL, 0x1, 0, 0x10000, 0x10000ULL },
> +    { 0xfffeULL, 0, 0, 0x10000, 0x10000ULL },
> +    { 0xffffULL, 0, 0, 0x10000, 0x10000ULL },
> +    { 0x10000ULL, 0x1, 0x1, 0x10000, 0x10000ULL },
> +    { 0x10001ULL, 0x1, 0x1, 0x20000, 0x20000ULL },
> +    { 0xfedcba98ULL, 0, 0, 0, 0x100000000ULL },
> +    { 0xfffffefeULL, 0, 0, 0, 0x100000000ULL },
> +    { 0xffffffffULL, 0, 0, 0, 0x100000000ULL },
> +    { 0x100000000ULL, 0x1, 0x1, 0x1, 0x100000000ULL },
> +    { 0x100000001ULL, 0x1, 0x1, 0x1, 0x200000000ULL },
> +    { 0x123456789ULL, 0, 0x8000, 0x40000000, 0x200000000ULL },
> +    { 0x123456789abcdefULL, 0, 0, 0, 0x200000000000000ULL },
> +    { 0x789abcdef0123456ULL, 0x80, 0x4000, 0, 0x8000000000000000ULL },
> +    { 0x8000000000000000ULL, 0x1, 0x1, 0x1, 0x8000000000000000ULL },
> +    { 0x8000000000000001ULL, 0x1, 0x1, 0x1, 0ULL },
> +    { 0xfffffffffffffffeULL, 0, 0, 0, 0ULL },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0ULL },
> +  };
> +
> +TEST_STDBIT_SAME_TOPLEVEL (stdc_bit_ceil);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_SAME (stdc_bit_ceil, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_bit_floor.c b/stdlib/tst-stdc_bit_floor.c
> new file mode 100644
> index 0000000000..3d86edc08a
> --- /dev/null
> +++ b/stdlib/tst-stdc_bit_floor.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_bit_floor functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0ULL },
> +    { 0x1ULL, 0x1, 0x1, 0x1, 0x1ULL },
> +    { 0x2ULL, 0x2, 0x2, 0x2, 0x2ULL },
> +    { 0x3ULL, 0x2, 0x2, 0x2, 0x2ULL },
> +    { 0x4ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x5ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x6ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x7ULL, 0x4, 0x4, 0x4, 0x4ULL },
> +    { 0x8ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x9ULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xaULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xbULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xcULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xdULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xeULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0xfULL, 0x8, 0x8, 0x8, 0x8ULL },
> +    { 0x10ULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x11ULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x12ULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x1fULL, 0x10, 0x10, 0x10, 0x10ULL },
> +    { 0x20ULL, 0x20, 0x20, 0x20, 0x20ULL },
> +    { 0x7fULL, 0x40, 0x40, 0x40, 0x40ULL },
> +    { 0x80ULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0x81ULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0x9aULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0xf3ULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0xffULL, 0x80, 0x80, 0x80, 0x80ULL },
> +    { 0x100ULL, 0, 0x100, 0x100, 0x100ULL },
> +    { 0x101ULL, 0x1, 0x100, 0x100, 0x100ULL },
> +    { 0x102ULL, 0x2, 0x100, 0x100, 0x100ULL },
> +    { 0x1feULL, 0x80, 0x100, 0x100, 0x100ULL },
> +    { 0x1ffULL, 0x80, 0x100, 0x100, 0x100ULL },
> +    { 0x200ULL, 0, 0x200, 0x200, 0x200ULL },
> +    { 0x234ULL, 0x20, 0x200, 0x200, 0x200ULL },
> +    { 0x4567ULL, 0x40, 0x4000, 0x4000, 0x4000ULL },
> +    { 0x7fffULL, 0x80, 0x4000, 0x4000, 0x4000ULL },
> +    { 0x8000ULL, 0, 0x8000, 0x8000, 0x8000ULL },
> +    { 0x8001ULL, 0x1, 0x8000, 0x8000, 0x8000ULL },
> +    { 0xfffeULL, 0x80, 0x8000, 0x8000, 0x8000ULL },
> +    { 0xffffULL, 0x80, 0x8000, 0x8000, 0x8000ULL },
> +    { 0x10000ULL, 0, 0, 0x10000, 0x10000ULL },
> +    { 0x10001ULL, 0x1, 0x1, 0x10000, 0x10000ULL },
> +    { 0xfedcba98ULL, 0x80, 0x8000, 0x80000000, 0x80000000ULL },
> +    { 0xfffffefeULL, 0x80, 0x8000, 0x80000000, 0x80000000ULL },
> +    { 0xffffffffULL, 0x80, 0x8000, 0x80000000, 0x80000000ULL },
> +    { 0x100000000ULL, 0, 0, 0, 0x100000000ULL },
> +    { 0x100000001ULL, 0x1, 0x1, 0x1, 0x100000000ULL },
> +    { 0x123456789ULL, 0x80, 0x4000, 0x20000000, 0x100000000ULL },
> +    { 0x123456789abcdefULL, 0x80, 0x8000, 0x80000000, 0x100000000000000ULL },
> +    { 0x789abcdef0123456ULL, 0x40, 0x2000, 0x80000000, 0x4000000000000000ULL },
> +    { 0x8000000000000000ULL, 0, 0, 0, 0x8000000000000000ULL },
> +    { 0x8000000000000001ULL, 0x1, 0x1, 0x1, 0x8000000000000000ULL },
> +    { 0xfffffffffffffffeULL, 0x80, 0x8000, 0x80000000, 0x8000000000000000ULL },
> +    { 0xffffffffffffffffULL, 0x80, 0x8000, 0x80000000, 0x8000000000000000ULL },
> +  };
> +
> +TEST_STDBIT_SAME_TOPLEVEL (stdc_bit_floor);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_SAME (stdc_bit_floor, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_bit_width.c b/stdlib/tst-stdc_bit_width.c
> new file mode 100644
> index 0000000000..f2732a7e98
> --- /dev/null
> +++ b/stdlib/tst-stdc_bit_width.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_bit_width functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 1, 1, 1, 1 },
> +    { 0x2ULL, 2, 2, 2, 2 },
> +    { 0x3ULL, 2, 2, 2, 2 },
> +    { 0x4ULL, 3, 3, 3, 3 },
> +    { 0x5ULL, 3, 3, 3, 3 },
> +    { 0x6ULL, 3, 3, 3, 3 },
> +    { 0x7ULL, 3, 3, 3, 3 },
> +    { 0x8ULL, 4, 4, 4, 4 },
> +    { 0x9ULL, 4, 4, 4, 4 },
> +    { 0xaULL, 4, 4, 4, 4 },
> +    { 0xbULL, 4, 4, 4, 4 },
> +    { 0xcULL, 4, 4, 4, 4 },
> +    { 0xdULL, 4, 4, 4, 4 },
> +    { 0xeULL, 4, 4, 4, 4 },
> +    { 0xfULL, 4, 4, 4, 4 },
> +    { 0x10ULL, 5, 5, 5, 5 },
> +    { 0x11ULL, 5, 5, 5, 5 },
> +    { 0x12ULL, 5, 5, 5, 5 },
> +    { 0x1fULL, 5, 5, 5, 5 },
> +    { 0x20ULL, 6, 6, 6, 6 },
> +    { 0x7fULL, 7, 7, 7, 7 },
> +    { 0x80ULL, 8, 8, 8, 8 },
> +    { 0x81ULL, 8, 8, 8, 8 },
> +    { 0x9aULL, 8, 8, 8, 8 },
> +    { 0xf3ULL, 8, 8, 8, 8 },
> +    { 0xffULL, 8, 8, 8, 8 },
> +    { 0x100ULL, 0, 9, 9, 9 },
> +    { 0x101ULL, 1, 9, 9, 9 },
> +    { 0x102ULL, 2, 9, 9, 9 },
> +    { 0x1feULL, 8, 9, 9, 9 },
> +    { 0x1ffULL, 8, 9, 9, 9 },
> +    { 0x200ULL, 0, 10, 10, 10 },
> +    { 0x234ULL, 6, 10, 10, 10 },
> +    { 0x4567ULL, 7, 15, 15, 15 },
> +    { 0x7fffULL, 8, 15, 15, 15 },
> +    { 0x8000ULL, 0, 16, 16, 16 },
> +    { 0x8001ULL, 1, 16, 16, 16 },
> +    { 0xfffeULL, 8, 16, 16, 16 },
> +    { 0xffffULL, 8, 16, 16, 16 },
> +    { 0x10000ULL, 0, 0, 17, 17 },
> +    { 0x10001ULL, 1, 1, 17, 17 },
> +    { 0xfedcba98ULL, 8, 16, 32, 32 },
> +    { 0xfffffefeULL, 8, 16, 32, 32 },
> +    { 0xffffffffULL, 8, 16, 32, 32 },
> +    { 0x100000000ULL, 0, 0, 0, 33 },
> +    { 0x100000001ULL, 1, 1, 1, 33 },
> +    { 0x123456789ULL, 8, 15, 30, 33 },
> +    { 0x123456789abcdefULL, 8, 16, 32, 57 },
> +    { 0x789abcdef0123456ULL, 7, 14, 32, 63 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 64 },
> +    { 0x8000000000000001ULL, 1, 1, 1, 64 },
> +    { 0xfffffffffffffffeULL, 8, 16, 32, 64 },
> +    { 0xffffffffffffffffULL, 8, 16, 32, 64 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_bit_width);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_bit_width, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_count_ones.c b/stdlib/tst-stdc_count_ones.c
> new file mode 100644
> index 0000000000..908db3560d
> --- /dev/null
> +++ b/stdlib/tst-stdc_count_ones.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_count_ones functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 1, 1, 1, 1 },
> +    { 0x2ULL, 1, 1, 1, 1 },
> +    { 0x3ULL, 2, 2, 2, 2 },
> +    { 0x4ULL, 1, 1, 1, 1 },
> +    { 0x5ULL, 2, 2, 2, 2 },
> +    { 0x6ULL, 2, 2, 2, 2 },
> +    { 0x7ULL, 3, 3, 3, 3 },
> +    { 0x8ULL, 1, 1, 1, 1 },
> +    { 0x9ULL, 2, 2, 2, 2 },
> +    { 0xaULL, 2, 2, 2, 2 },
> +    { 0xbULL, 3, 3, 3, 3 },
> +    { 0xcULL, 2, 2, 2, 2 },
> +    { 0xdULL, 3, 3, 3, 3 },
> +    { 0xeULL, 3, 3, 3, 3 },
> +    { 0xfULL, 4, 4, 4, 4 },
> +    { 0x10ULL, 1, 1, 1, 1 },
> +    { 0x11ULL, 2, 2, 2, 2 },
> +    { 0x12ULL, 2, 2, 2, 2 },
> +    { 0x1fULL, 5, 5, 5, 5 },
> +    { 0x20ULL, 1, 1, 1, 1 },
> +    { 0x7fULL, 7, 7, 7, 7 },
> +    { 0x80ULL, 1, 1, 1, 1 },
> +    { 0x81ULL, 2, 2, 2, 2 },
> +    { 0x9aULL, 4, 4, 4, 4 },
> +    { 0xf3ULL, 6, 6, 6, 6 },
> +    { 0xffULL, 8, 8, 8, 8 },
> +    { 0x100ULL, 0, 1, 1, 1 },
> +    { 0x101ULL, 1, 2, 2, 2 },
> +    { 0x102ULL, 1, 2, 2, 2 },
> +    { 0x1feULL, 7, 8, 8, 8 },
> +    { 0x1ffULL, 8, 9, 9, 9 },
> +    { 0x200ULL, 0, 1, 1, 1 },
> +    { 0x234ULL, 3, 4, 4, 4 },
> +    { 0x4567ULL, 5, 8, 8, 8 },
> +    { 0x7fffULL, 8, 15, 15, 15 },
> +    { 0x8000ULL, 0, 1, 1, 1 },
> +    { 0x8001ULL, 1, 2, 2, 2 },
> +    { 0xfffeULL, 7, 15, 15, 15 },
> +    { 0xffffULL, 8, 16, 16, 16 },
> +    { 0x10000ULL, 0, 0, 1, 1 },
> +    { 0x10001ULL, 1, 1, 2, 2 },
> +    { 0xfedcba98ULL, 3, 8, 20, 20 },
> +    { 0xfffffefeULL, 7, 14, 30, 30 },
> +    { 0xffffffffULL, 8, 16, 32, 32 },
> +    { 0x100000000ULL, 0, 0, 0, 1 },
> +    { 0x100000001ULL, 1, 1, 1, 2 },
> +    { 0x123456789ULL, 3, 8, 14, 15 },
> +    { 0x123456789abcdefULL, 7, 12, 20, 32 },
> +    { 0x789abcdef0123456ULL, 4, 7, 13, 32 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 1 },
> +    { 0x8000000000000001ULL, 1, 1, 1, 2 },
> +    { 0xfffffffffffffffeULL, 7, 15, 31, 63 },
> +    { 0xffffffffffffffffULL, 8, 16, 32, 64 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_count_ones);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_count_ones, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_count_zeros.c b/stdlib/tst-stdc_count_zeros.c
> new file mode 100644
> index 0000000000..299e697858
> --- /dev/null
> +++ b/stdlib/tst-stdc_count_zeros.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_count_zeros functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 8, 16, 32, 64 },
> +    { 0x1ULL, 7, 15, 31, 63 },
> +    { 0x2ULL, 7, 15, 31, 63 },
> +    { 0x3ULL, 6, 14, 30, 62 },
> +    { 0x4ULL, 7, 15, 31, 63 },
> +    { 0x5ULL, 6, 14, 30, 62 },
> +    { 0x6ULL, 6, 14, 30, 62 },
> +    { 0x7ULL, 5, 13, 29, 61 },
> +    { 0x8ULL, 7, 15, 31, 63 },
> +    { 0x9ULL, 6, 14, 30, 62 },
> +    { 0xaULL, 6, 14, 30, 62 },
> +    { 0xbULL, 5, 13, 29, 61 },
> +    { 0xcULL, 6, 14, 30, 62 },
> +    { 0xdULL, 5, 13, 29, 61 },
> +    { 0xeULL, 5, 13, 29, 61 },
> +    { 0xfULL, 4, 12, 28, 60 },
> +    { 0x10ULL, 7, 15, 31, 63 },
> +    { 0x11ULL, 6, 14, 30, 62 },
> +    { 0x12ULL, 6, 14, 30, 62 },
> +    { 0x1fULL, 3, 11, 27, 59 },
> +    { 0x20ULL, 7, 15, 31, 63 },
> +    { 0x7fULL, 1, 9, 25, 57 },
> +    { 0x80ULL, 7, 15, 31, 63 },
> +    { 0x81ULL, 6, 14, 30, 62 },
> +    { 0x9aULL, 4, 12, 28, 60 },
> +    { 0xf3ULL, 2, 10, 26, 58 },
> +    { 0xffULL, 0, 8, 24, 56 },
> +    { 0x100ULL, 8, 15, 31, 63 },
> +    { 0x101ULL, 7, 14, 30, 62 },
> +    { 0x102ULL, 7, 14, 30, 62 },
> +    { 0x1feULL, 1, 8, 24, 56 },
> +    { 0x1ffULL, 0, 7, 23, 55 },
> +    { 0x200ULL, 8, 15, 31, 63 },
> +    { 0x234ULL, 5, 12, 28, 60 },
> +    { 0x4567ULL, 3, 8, 24, 56 },
> +    { 0x7fffULL, 0, 1, 17, 49 },
> +    { 0x8000ULL, 8, 15, 31, 63 },
> +    { 0x8001ULL, 7, 14, 30, 62 },
> +    { 0xfffeULL, 1, 1, 17, 49 },
> +    { 0xffffULL, 0, 0, 16, 48 },
> +    { 0x10000ULL, 8, 16, 31, 63 },
> +    { 0x10001ULL, 7, 15, 30, 62 },
> +    { 0xfedcba98ULL, 5, 8, 12, 44 },
> +    { 0xfffffefeULL, 1, 2, 2, 34 },
> +    { 0xffffffffULL, 0, 0, 0, 32 },
> +    { 0x100000000ULL, 8, 16, 32, 63 },
> +    { 0x100000001ULL, 7, 15, 31, 62 },
> +    { 0x123456789ULL, 5, 8, 18, 49 },
> +    { 0x123456789abcdefULL, 1, 4, 12, 32 },
> +    { 0x789abcdef0123456ULL, 4, 9, 19, 32 },
> +    { 0x8000000000000000ULL, 8, 16, 32, 63 },
> +    { 0x8000000000000001ULL, 7, 15, 31, 62 },
> +    { 0xfffffffffffffffeULL, 1, 1, 1, 1 },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_count_zeros);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_count_zeros, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_first_leading_one.c b/stdlib/tst-stdc_first_leading_one.c
> new file mode 100644
> index 0000000000..45ffa3ab00
> --- /dev/null
> +++ b/stdlib/tst-stdc_first_leading_one.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_first_leading_one functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 8, 16, 32, 64 },
> +    { 0x2ULL, 7, 15, 31, 63 },
> +    { 0x3ULL, 7, 15, 31, 63 },
> +    { 0x4ULL, 6, 14, 30, 62 },
> +    { 0x5ULL, 6, 14, 30, 62 },
> +    { 0x6ULL, 6, 14, 30, 62 },
> +    { 0x7ULL, 6, 14, 30, 62 },
> +    { 0x8ULL, 5, 13, 29, 61 },
> +    { 0x9ULL, 5, 13, 29, 61 },
> +    { 0xaULL, 5, 13, 29, 61 },
> +    { 0xbULL, 5, 13, 29, 61 },
> +    { 0xcULL, 5, 13, 29, 61 },
> +    { 0xdULL, 5, 13, 29, 61 },
> +    { 0xeULL, 5, 13, 29, 61 },
> +    { 0xfULL, 5, 13, 29, 61 },
> +    { 0x10ULL, 4, 12, 28, 60 },
> +    { 0x11ULL, 4, 12, 28, 60 },
> +    { 0x12ULL, 4, 12, 28, 60 },
> +    { 0x1fULL, 4, 12, 28, 60 },
> +    { 0x20ULL, 3, 11, 27, 59 },
> +    { 0x7fULL, 2, 10, 26, 58 },
> +    { 0x80ULL, 1, 9, 25, 57 },
> +    { 0x81ULL, 1, 9, 25, 57 },
> +    { 0x9aULL, 1, 9, 25, 57 },
> +    { 0xf3ULL, 1, 9, 25, 57 },
> +    { 0xffULL, 1, 9, 25, 57 },
> +    { 0x100ULL, 0, 8, 24, 56 },
> +    { 0x101ULL, 8, 8, 24, 56 },
> +    { 0x102ULL, 7, 8, 24, 56 },
> +    { 0x1feULL, 1, 8, 24, 56 },
> +    { 0x1ffULL, 1, 8, 24, 56 },
> +    { 0x200ULL, 0, 7, 23, 55 },
> +    { 0x234ULL, 3, 7, 23, 55 },
> +    { 0x4567ULL, 2, 2, 18, 50 },
> +    { 0x7fffULL, 1, 2, 18, 50 },
> +    { 0x8000ULL, 0, 1, 17, 49 },
> +    { 0x8001ULL, 8, 1, 17, 49 },
> +    { 0xfffeULL, 1, 1, 17, 49 },
> +    { 0xffffULL, 1, 1, 17, 49 },
> +    { 0x10000ULL, 0, 0, 16, 48 },
> +    { 0x10001ULL, 8, 16, 16, 48 },
> +    { 0xfedcba98ULL, 1, 1, 1, 33 },
> +    { 0xfffffefeULL, 1, 1, 1, 33 },
> +    { 0xffffffffULL, 1, 1, 1, 33 },
> +    { 0x100000000ULL, 0, 0, 0, 32 },
> +    { 0x100000001ULL, 8, 16, 32, 32 },
> +    { 0x123456789ULL, 1, 2, 3, 32 },
> +    { 0x123456789abcdefULL, 1, 1, 1, 8 },
> +    { 0x789abcdef0123456ULL, 2, 3, 1, 2 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 1 },
> +    { 0x8000000000000001ULL, 8, 16, 32, 1 },
> +    { 0xfffffffffffffffeULL, 1, 1, 1, 1 },
> +    { 0xffffffffffffffffULL, 1, 1, 1, 1 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_first_leading_one);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_first_leading_one, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_first_leading_zero.c b/stdlib/tst-stdc_first_leading_zero.c
> new file mode 100644
> index 0000000000..f26057f1d1
> --- /dev/null
> +++ b/stdlib/tst-stdc_first_leading_zero.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_first_leading_zero functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 1, 1, 1, 1 },
> +    { 0x1ULL, 1, 1, 1, 1 },
> +    { 0x2ULL, 1, 1, 1, 1 },
> +    { 0x3ULL, 1, 1, 1, 1 },
> +    { 0x4ULL, 1, 1, 1, 1 },
> +    { 0x5ULL, 1, 1, 1, 1 },
> +    { 0x6ULL, 1, 1, 1, 1 },
> +    { 0x7ULL, 1, 1, 1, 1 },
> +    { 0x8ULL, 1, 1, 1, 1 },
> +    { 0x9ULL, 1, 1, 1, 1 },
> +    { 0xaULL, 1, 1, 1, 1 },
> +    { 0xbULL, 1, 1, 1, 1 },
> +    { 0xcULL, 1, 1, 1, 1 },
> +    { 0xdULL, 1, 1, 1, 1 },
> +    { 0xeULL, 1, 1, 1, 1 },
> +    { 0xfULL, 1, 1, 1, 1 },
> +    { 0x10ULL, 1, 1, 1, 1 },
> +    { 0x11ULL, 1, 1, 1, 1 },
> +    { 0x12ULL, 1, 1, 1, 1 },
> +    { 0x1fULL, 1, 1, 1, 1 },
> +    { 0x20ULL, 1, 1, 1, 1 },
> +    { 0x7fULL, 1, 1, 1, 1 },
> +    { 0x80ULL, 2, 1, 1, 1 },
> +    { 0x81ULL, 2, 1, 1, 1 },
> +    { 0x9aULL, 2, 1, 1, 1 },
> +    { 0xf3ULL, 5, 1, 1, 1 },
> +    { 0xffULL, 0, 1, 1, 1 },
> +    { 0x100ULL, 1, 1, 1, 1 },
> +    { 0x101ULL, 1, 1, 1, 1 },
> +    { 0x102ULL, 1, 1, 1, 1 },
> +    { 0x1feULL, 8, 1, 1, 1 },
> +    { 0x1ffULL, 0, 1, 1, 1 },
> +    { 0x200ULL, 1, 1, 1, 1 },
> +    { 0x234ULL, 1, 1, 1, 1 },
> +    { 0x4567ULL, 1, 1, 1, 1 },
> +    { 0x7fffULL, 0, 1, 1, 1 },
> +    { 0x8000ULL, 1, 2, 1, 1 },
> +    { 0x8001ULL, 1, 2, 1, 1 },
> +    { 0xfffeULL, 8, 16, 1, 1 },
> +    { 0xffffULL, 0, 0, 1, 1 },
> +    { 0x10000ULL, 1, 1, 1, 1 },
> +    { 0x10001ULL, 1, 1, 1, 1 },
> +    { 0xfedcba98ULL, 2, 2, 8, 1 },
> +    { 0xfffffefeULL, 8, 8, 24, 1 },
> +    { 0xffffffffULL, 0, 0, 0, 1 },
> +    { 0x100000000ULL, 1, 1, 1, 1 },
> +    { 0x100000001ULL, 1, 1, 1, 1 },
> +    { 0x123456789ULL, 2, 1, 1, 1 },
> +    { 0x123456789abcdefULL, 4, 3, 2, 1 },
> +    { 0x789abcdef0123456ULL, 1, 1, 5, 1 },
> +    { 0x8000000000000000ULL, 1, 1, 1, 2 },
> +    { 0x8000000000000001ULL, 1, 1, 1, 2 },
> +    { 0xfffffffffffffffeULL, 8, 16, 32, 64 },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_first_leading_zero);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_first_leading_zero, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_first_trailing_one.c b/stdlib/tst-stdc_first_trailing_one.c
> new file mode 100644
> index 0000000000..c4bca078ad
> --- /dev/null
> +++ b/stdlib/tst-stdc_first_trailing_one.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_first_trailing_one functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 1, 1, 1, 1 },
> +    { 0x2ULL, 2, 2, 2, 2 },
> +    { 0x3ULL, 1, 1, 1, 1 },
> +    { 0x4ULL, 3, 3, 3, 3 },
> +    { 0x5ULL, 1, 1, 1, 1 },
> +    { 0x6ULL, 2, 2, 2, 2 },
> +    { 0x7ULL, 1, 1, 1, 1 },
> +    { 0x8ULL, 4, 4, 4, 4 },
> +    { 0x9ULL, 1, 1, 1, 1 },
> +    { 0xaULL, 2, 2, 2, 2 },
> +    { 0xbULL, 1, 1, 1, 1 },
> +    { 0xcULL, 3, 3, 3, 3 },
> +    { 0xdULL, 1, 1, 1, 1 },
> +    { 0xeULL, 2, 2, 2, 2 },
> +    { 0xfULL, 1, 1, 1, 1 },
> +    { 0x10ULL, 5, 5, 5, 5 },
> +    { 0x11ULL, 1, 1, 1, 1 },
> +    { 0x12ULL, 2, 2, 2, 2 },
> +    { 0x1fULL, 1, 1, 1, 1 },
> +    { 0x20ULL, 6, 6, 6, 6 },
> +    { 0x7fULL, 1, 1, 1, 1 },
> +    { 0x80ULL, 8, 8, 8, 8 },
> +    { 0x81ULL, 1, 1, 1, 1 },
> +    { 0x9aULL, 2, 2, 2, 2 },
> +    { 0xf3ULL, 1, 1, 1, 1 },
> +    { 0xffULL, 1, 1, 1, 1 },
> +    { 0x100ULL, 0, 9, 9, 9 },
> +    { 0x101ULL, 1, 1, 1, 1 },
> +    { 0x102ULL, 2, 2, 2, 2 },
> +    { 0x1feULL, 2, 2, 2, 2 },
> +    { 0x1ffULL, 1, 1, 1, 1 },
> +    { 0x200ULL, 0, 10, 10, 10 },
> +    { 0x234ULL, 3, 3, 3, 3 },
> +    { 0x4567ULL, 1, 1, 1, 1 },
> +    { 0x7fffULL, 1, 1, 1, 1 },
> +    { 0x8000ULL, 0, 16, 16, 16 },
> +    { 0x8001ULL, 1, 1, 1, 1 },
> +    { 0xfffeULL, 2, 2, 2, 2 },
> +    { 0xffffULL, 1, 1, 1, 1 },
> +    { 0x10000ULL, 0, 0, 17, 17 },
> +    { 0x10001ULL, 1, 1, 1, 1 },
> +    { 0xfedcba98ULL, 4, 4, 4, 4 },
> +    { 0xfffffefeULL, 2, 2, 2, 2 },
> +    { 0xffffffffULL, 1, 1, 1, 1 },
> +    { 0x100000000ULL, 0, 0, 0, 33 },
> +    { 0x100000001ULL, 1, 1, 1, 1 },
> +    { 0x123456789ULL, 1, 1, 1, 1 },
> +    { 0x123456789abcdefULL, 1, 1, 1, 1 },
> +    { 0x789abcdef0123456ULL, 2, 2, 2, 2 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 64 },
> +    { 0x8000000000000001ULL, 1, 1, 1, 1 },
> +    { 0xfffffffffffffffeULL, 2, 2, 2, 2 },
> +    { 0xffffffffffffffffULL, 1, 1, 1, 1 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_first_trailing_one);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_first_trailing_one, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_first_trailing_zero.c b/stdlib/tst-stdc_first_trailing_zero.c
> new file mode 100644
> index 0000000000..2df2a71d1d
> --- /dev/null
> +++ b/stdlib/tst-stdc_first_trailing_zero.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_first_trailing_zero functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 1, 1, 1, 1 },
> +    { 0x1ULL, 2, 2, 2, 2 },
> +    { 0x2ULL, 1, 1, 1, 1 },
> +    { 0x3ULL, 3, 3, 3, 3 },
> +    { 0x4ULL, 1, 1, 1, 1 },
> +    { 0x5ULL, 2, 2, 2, 2 },
> +    { 0x6ULL, 1, 1, 1, 1 },
> +    { 0x7ULL, 4, 4, 4, 4 },
> +    { 0x8ULL, 1, 1, 1, 1 },
> +    { 0x9ULL, 2, 2, 2, 2 },
> +    { 0xaULL, 1, 1, 1, 1 },
> +    { 0xbULL, 3, 3, 3, 3 },
> +    { 0xcULL, 1, 1, 1, 1 },
> +    { 0xdULL, 2, 2, 2, 2 },
> +    { 0xeULL, 1, 1, 1, 1 },
> +    { 0xfULL, 5, 5, 5, 5 },
> +    { 0x10ULL, 1, 1, 1, 1 },
> +    { 0x11ULL, 2, 2, 2, 2 },
> +    { 0x12ULL, 1, 1, 1, 1 },
> +    { 0x1fULL, 6, 6, 6, 6 },
> +    { 0x20ULL, 1, 1, 1, 1 },
> +    { 0x7fULL, 8, 8, 8, 8 },
> +    { 0x80ULL, 1, 1, 1, 1 },
> +    { 0x81ULL, 2, 2, 2, 2 },
> +    { 0x9aULL, 1, 1, 1, 1 },
> +    { 0xf3ULL, 3, 3, 3, 3 },
> +    { 0xffULL, 0, 9, 9, 9 },
> +    { 0x100ULL, 1, 1, 1, 1 },
> +    { 0x101ULL, 2, 2, 2, 2 },
> +    { 0x102ULL, 1, 1, 1, 1 },
> +    { 0x1feULL, 1, 1, 1, 1 },
> +    { 0x1ffULL, 0, 10, 10, 10 },
> +    { 0x200ULL, 1, 1, 1, 1 },
> +    { 0x234ULL, 1, 1, 1, 1 },
> +    { 0x4567ULL, 4, 4, 4, 4 },
> +    { 0x7fffULL, 0, 16, 16, 16 },
> +    { 0x8000ULL, 1, 1, 1, 1 },
> +    { 0x8001ULL, 2, 2, 2, 2 },
> +    { 0xfffeULL, 1, 1, 1, 1 },
> +    { 0xffffULL, 0, 0, 17, 17 },
> +    { 0x10000ULL, 1, 1, 1, 1 },
> +    { 0x10001ULL, 2, 2, 2, 2 },
> +    { 0xfedcba98ULL, 1, 1, 1, 1 },
> +    { 0xfffffefeULL, 1, 1, 1, 1 },
> +    { 0xffffffffULL, 0, 0, 0, 33 },
> +    { 0x100000000ULL, 1, 1, 1, 1 },
> +    { 0x100000001ULL, 2, 2, 2, 2 },
> +    { 0x123456789ULL, 2, 2, 2, 2 },
> +    { 0x123456789abcdefULL, 5, 5, 5, 5 },
> +    { 0x789abcdef0123456ULL, 1, 1, 1, 1 },
> +    { 0x8000000000000000ULL, 1, 1, 1, 1 },
> +    { 0x8000000000000001ULL, 2, 2, 2, 2 },
> +    { 0xfffffffffffffffeULL, 1, 1, 1, 1 },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_first_trailing_zero);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_first_trailing_zero, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_has_single_bit.c b/stdlib/tst-stdc_has_single_bit.c
> new file mode 100644
> index 0000000000..e6168cc8f6
> --- /dev/null
> +++ b/stdlib/tst-stdc_has_single_bit.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_has_single_bit functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, false, false, false, false },
> +    { 0x1ULL, true, true, true, true },
> +    { 0x2ULL, true, true, true, true },
> +    { 0x3ULL, false, false, false, false },
> +    { 0x4ULL, true, true, true, true },
> +    { 0x5ULL, false, false, false, false },
> +    { 0x6ULL, false, false, false, false },
> +    { 0x7ULL, false, false, false, false },
> +    { 0x8ULL, true, true, true, true },
> +    { 0x9ULL, false, false, false, false },
> +    { 0xaULL, false, false, false, false },
> +    { 0xbULL, false, false, false, false },
> +    { 0xcULL, false, false, false, false },
> +    { 0xdULL, false, false, false, false },
> +    { 0xeULL, false, false, false, false },
> +    { 0xfULL, false, false, false, false },
> +    { 0x10ULL, true, true, true, true },
> +    { 0x11ULL, false, false, false, false },
> +    { 0x12ULL, false, false, false, false },
> +    { 0x1fULL, false, false, false, false },
> +    { 0x20ULL, true, true, true, true },
> +    { 0x7fULL, false, false, false, false },
> +    { 0x80ULL, true, true, true, true },
> +    { 0x81ULL, false, false, false, false },
> +    { 0x9aULL, false, false, false, false },
> +    { 0xf3ULL, false, false, false, false },
> +    { 0xffULL, false, false, false, false },
> +    { 0x100ULL, false, true, true, true },
> +    { 0x101ULL, true, false, false, false },
> +    { 0x102ULL, true, false, false, false },
> +    { 0x1feULL, false, false, false, false },
> +    { 0x1ffULL, false, false, false, false },
> +    { 0x200ULL, false, true, true, true },
> +    { 0x234ULL, false, false, false, false },
> +    { 0x4567ULL, false, false, false, false },
> +    { 0x7fffULL, false, false, false, false },
> +    { 0x8000ULL, false, true, true, true },
> +    { 0x8001ULL, true, false, false, false },
> +    { 0xfffeULL, false, false, false, false },
> +    { 0xffffULL, false, false, false, false },
> +    { 0x10000ULL, false, false, true, true },
> +    { 0x10001ULL, true, true, false, false },
> +    { 0xfedcba98ULL, false, false, false, false },
> +    { 0xfffffefeULL, false, false, false, false },
> +    { 0xffffffffULL, false, false, false, false },
> +    { 0x100000000ULL, false, false, false, true },
> +    { 0x100000001ULL, true, true, true, false },
> +    { 0x123456789ULL, false, false, false, false },
> +    { 0x123456789abcdefULL, false, false, false, false },
> +    { 0x789abcdef0123456ULL, false, false, false, false },
> +    { 0x8000000000000000ULL, false, false, false, true },
> +    { 0x8000000000000001ULL, true, true, true, false },
> +    { 0xfffffffffffffffeULL, false, false, false, false },
> +    { 0xffffffffffffffffULL, false, false, false, false },
> +  };
> +
> +TEST_STDBIT_BOOL_TOPLEVEL (stdc_has_single_bit);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_BOOL (stdc_has_single_bit, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_leading_ones.c b/stdlib/tst-stdc_leading_ones.c
> new file mode 100644
> index 0000000000..332c39bf9f
> --- /dev/null
> +++ b/stdlib/tst-stdc_leading_ones.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_leading_ones functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 0, 0, 0, 0 },
> +    { 0x2ULL, 0, 0, 0, 0 },
> +    { 0x3ULL, 0, 0, 0, 0 },
> +    { 0x4ULL, 0, 0, 0, 0 },
> +    { 0x5ULL, 0, 0, 0, 0 },
> +    { 0x6ULL, 0, 0, 0, 0 },
> +    { 0x7ULL, 0, 0, 0, 0 },
> +    { 0x8ULL, 0, 0, 0, 0 },
> +    { 0x9ULL, 0, 0, 0, 0 },
> +    { 0xaULL, 0, 0, 0, 0 },
> +    { 0xbULL, 0, 0, 0, 0 },
> +    { 0xcULL, 0, 0, 0, 0 },
> +    { 0xdULL, 0, 0, 0, 0 },
> +    { 0xeULL, 0, 0, 0, 0 },
> +    { 0xfULL, 0, 0, 0, 0 },
> +    { 0x10ULL, 0, 0, 0, 0 },
> +    { 0x11ULL, 0, 0, 0, 0 },
> +    { 0x12ULL, 0, 0, 0, 0 },
> +    { 0x1fULL, 0, 0, 0, 0 },
> +    { 0x20ULL, 0, 0, 0, 0 },
> +    { 0x7fULL, 0, 0, 0, 0 },
> +    { 0x80ULL, 1, 0, 0, 0 },
> +    { 0x81ULL, 1, 0, 0, 0 },
> +    { 0x9aULL, 1, 0, 0, 0 },
> +    { 0xf3ULL, 4, 0, 0, 0 },
> +    { 0xffULL, 8, 0, 0, 0 },
> +    { 0x100ULL, 0, 0, 0, 0 },
> +    { 0x101ULL, 0, 0, 0, 0 },
> +    { 0x102ULL, 0, 0, 0, 0 },
> +    { 0x1feULL, 7, 0, 0, 0 },
> +    { 0x1ffULL, 8, 0, 0, 0 },
> +    { 0x200ULL, 0, 0, 0, 0 },
> +    { 0x234ULL, 0, 0, 0, 0 },
> +    { 0x4567ULL, 0, 0, 0, 0 },
> +    { 0x7fffULL, 8, 0, 0, 0 },
> +    { 0x8000ULL, 0, 1, 0, 0 },
> +    { 0x8001ULL, 0, 1, 0, 0 },
> +    { 0xfffeULL, 7, 15, 0, 0 },
> +    { 0xffffULL, 8, 16, 0, 0 },
> +    { 0x10000ULL, 0, 0, 0, 0 },
> +    { 0x10001ULL, 0, 0, 0, 0 },
> +    { 0xfedcba98ULL, 1, 1, 7, 0 },
> +    { 0xfffffefeULL, 7, 7, 23, 0 },
> +    { 0xffffffffULL, 8, 16, 32, 0 },
> +    { 0x100000000ULL, 0, 0, 0, 0 },
> +    { 0x100000001ULL, 0, 0, 0, 0 },
> +    { 0x123456789ULL, 1, 0, 0, 0 },
> +    { 0x123456789abcdefULL, 3, 2, 1, 0 },
> +    { 0x789abcdef0123456ULL, 0, 0, 4, 0 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 1 },
> +    { 0x8000000000000001ULL, 0, 0, 0, 1 },
> +    { 0xfffffffffffffffeULL, 7, 15, 31, 63 },
> +    { 0xffffffffffffffffULL, 8, 16, 32, 64 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_leading_ones);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_leading_ones, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_leading_zeros.c b/stdlib/tst-stdc_leading_zeros.c
> new file mode 100644
> index 0000000000..1d6457cec5
> --- /dev/null
> +++ b/stdlib/tst-stdc_leading_zeros.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_leading_zeros functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 8, 16, 32, 64 },
> +    { 0x1ULL, 7, 15, 31, 63 },
> +    { 0x2ULL, 6, 14, 30, 62 },
> +    { 0x3ULL, 6, 14, 30, 62 },
> +    { 0x4ULL, 5, 13, 29, 61 },
> +    { 0x5ULL, 5, 13, 29, 61 },
> +    { 0x6ULL, 5, 13, 29, 61 },
> +    { 0x7ULL, 5, 13, 29, 61 },
> +    { 0x8ULL, 4, 12, 28, 60 },
> +    { 0x9ULL, 4, 12, 28, 60 },
> +    { 0xaULL, 4, 12, 28, 60 },
> +    { 0xbULL, 4, 12, 28, 60 },
> +    { 0xcULL, 4, 12, 28, 60 },
> +    { 0xdULL, 4, 12, 28, 60 },
> +    { 0xeULL, 4, 12, 28, 60 },
> +    { 0xfULL, 4, 12, 28, 60 },
> +    { 0x10ULL, 3, 11, 27, 59 },
> +    { 0x11ULL, 3, 11, 27, 59 },
> +    { 0x12ULL, 3, 11, 27, 59 },
> +    { 0x1fULL, 3, 11, 27, 59 },
> +    { 0x20ULL, 2, 10, 26, 58 },
> +    { 0x7fULL, 1, 9, 25, 57 },
> +    { 0x80ULL, 0, 8, 24, 56 },
> +    { 0x81ULL, 0, 8, 24, 56 },
> +    { 0x9aULL, 0, 8, 24, 56 },
> +    { 0xf3ULL, 0, 8, 24, 56 },
> +    { 0xffULL, 0, 8, 24, 56 },
> +    { 0x100ULL, 8, 7, 23, 55 },
> +    { 0x101ULL, 7, 7, 23, 55 },
> +    { 0x102ULL, 6, 7, 23, 55 },
> +    { 0x1feULL, 0, 7, 23, 55 },
> +    { 0x1ffULL, 0, 7, 23, 55 },
> +    { 0x200ULL, 8, 6, 22, 54 },
> +    { 0x234ULL, 2, 6, 22, 54 },
> +    { 0x4567ULL, 1, 1, 17, 49 },
> +    { 0x7fffULL, 0, 1, 17, 49 },
> +    { 0x8000ULL, 8, 0, 16, 48 },
> +    { 0x8001ULL, 7, 0, 16, 48 },
> +    { 0xfffeULL, 0, 0, 16, 48 },
> +    { 0xffffULL, 0, 0, 16, 48 },
> +    { 0x10000ULL, 8, 16, 15, 47 },
> +    { 0x10001ULL, 7, 15, 15, 47 },
> +    { 0xfedcba98ULL, 0, 0, 0, 32 },
> +    { 0xfffffefeULL, 0, 0, 0, 32 },
> +    { 0xffffffffULL, 0, 0, 0, 32 },
> +    { 0x100000000ULL, 8, 16, 32, 31 },
> +    { 0x100000001ULL, 7, 15, 31, 31 },
> +    { 0x123456789ULL, 0, 1, 2, 31 },
> +    { 0x123456789abcdefULL, 0, 0, 0, 7 },
> +    { 0x789abcdef0123456ULL, 1, 2, 0, 1 },
> +    { 0x8000000000000000ULL, 8, 16, 32, 0 },
> +    { 0x8000000000000001ULL, 7, 15, 31, 0 },
> +    { 0xfffffffffffffffeULL, 0, 0, 0, 0 },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_leading_zeros);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_leading_zeros, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_trailing_ones.c b/stdlib/tst-stdc_trailing_ones.c
> new file mode 100644
> index 0000000000..c139f34ab8
> --- /dev/null
> +++ b/stdlib/tst-stdc_trailing_ones.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_trailing_ones functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 0, 0, 0, 0 },
> +    { 0x1ULL, 1, 1, 1, 1 },
> +    { 0x2ULL, 0, 0, 0, 0 },
> +    { 0x3ULL, 2, 2, 2, 2 },
> +    { 0x4ULL, 0, 0, 0, 0 },
> +    { 0x5ULL, 1, 1, 1, 1 },
> +    { 0x6ULL, 0, 0, 0, 0 },
> +    { 0x7ULL, 3, 3, 3, 3 },
> +    { 0x8ULL, 0, 0, 0, 0 },
> +    { 0x9ULL, 1, 1, 1, 1 },
> +    { 0xaULL, 0, 0, 0, 0 },
> +    { 0xbULL, 2, 2, 2, 2 },
> +    { 0xcULL, 0, 0, 0, 0 },
> +    { 0xdULL, 1, 1, 1, 1 },
> +    { 0xeULL, 0, 0, 0, 0 },
> +    { 0xfULL, 4, 4, 4, 4 },
> +    { 0x10ULL, 0, 0, 0, 0 },
> +    { 0x11ULL, 1, 1, 1, 1 },
> +    { 0x12ULL, 0, 0, 0, 0 },
> +    { 0x1fULL, 5, 5, 5, 5 },
> +    { 0x20ULL, 0, 0, 0, 0 },
> +    { 0x7fULL, 7, 7, 7, 7 },
> +    { 0x80ULL, 0, 0, 0, 0 },
> +    { 0x81ULL, 1, 1, 1, 1 },
> +    { 0x9aULL, 0, 0, 0, 0 },
> +    { 0xf3ULL, 2, 2, 2, 2 },
> +    { 0xffULL, 8, 8, 8, 8 },
> +    { 0x100ULL, 0, 0, 0, 0 },
> +    { 0x101ULL, 1, 1, 1, 1 },
> +    { 0x102ULL, 0, 0, 0, 0 },
> +    { 0x1feULL, 0, 0, 0, 0 },
> +    { 0x1ffULL, 8, 9, 9, 9 },
> +    { 0x200ULL, 0, 0, 0, 0 },
> +    { 0x234ULL, 0, 0, 0, 0 },
> +    { 0x4567ULL, 3, 3, 3, 3 },
> +    { 0x7fffULL, 8, 15, 15, 15 },
> +    { 0x8000ULL, 0, 0, 0, 0 },
> +    { 0x8001ULL, 1, 1, 1, 1 },
> +    { 0xfffeULL, 0, 0, 0, 0 },
> +    { 0xffffULL, 8, 16, 16, 16 },
> +    { 0x10000ULL, 0, 0, 0, 0 },
> +    { 0x10001ULL, 1, 1, 1, 1 },
> +    { 0xfedcba98ULL, 0, 0, 0, 0 },
> +    { 0xfffffefeULL, 0, 0, 0, 0 },
> +    { 0xffffffffULL, 8, 16, 32, 32 },
> +    { 0x100000000ULL, 0, 0, 0, 0 },
> +    { 0x100000001ULL, 1, 1, 1, 1 },
> +    { 0x123456789ULL, 1, 1, 1, 1 },
> +    { 0x123456789abcdefULL, 4, 4, 4, 4 },
> +    { 0x789abcdef0123456ULL, 0, 0, 0, 0 },
> +    { 0x8000000000000000ULL, 0, 0, 0, 0 },
> +    { 0x8000000000000001ULL, 1, 1, 1, 1 },
> +    { 0xfffffffffffffffeULL, 0, 0, 0, 0 },
> +    { 0xffffffffffffffffULL, 8, 16, 32, 64 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_trailing_ones);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_trailing_ones, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/stdlib/tst-stdc_trailing_zeros.c b/stdlib/tst-stdc_trailing_zeros.c
> new file mode 100644
> index 0000000000..a124ac4e25
> --- /dev/null
> +++ b/stdlib/tst-stdc_trailing_zeros.c
> @@ -0,0 +1,88 @@
> +/* Test stdc_trailing_zeros functions and macros.
> +   Copyright (C) 2023 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <tst-stdbit.h>
> +
> +static const struct stdbit_test inputs[] =
> +  {
> +    { 0ULL, 8, 16, 32, 64 },
> +    { 0x1ULL, 0, 0, 0, 0 },
> +    { 0x2ULL, 1, 1, 1, 1 },
> +    { 0x3ULL, 0, 0, 0, 0 },
> +    { 0x4ULL, 2, 2, 2, 2 },
> +    { 0x5ULL, 0, 0, 0, 0 },
> +    { 0x6ULL, 1, 1, 1, 1 },
> +    { 0x7ULL, 0, 0, 0, 0 },
> +    { 0x8ULL, 3, 3, 3, 3 },
> +    { 0x9ULL, 0, 0, 0, 0 },
> +    { 0xaULL, 1, 1, 1, 1 },
> +    { 0xbULL, 0, 0, 0, 0 },
> +    { 0xcULL, 2, 2, 2, 2 },
> +    { 0xdULL, 0, 0, 0, 0 },
> +    { 0xeULL, 1, 1, 1, 1 },
> +    { 0xfULL, 0, 0, 0, 0 },
> +    { 0x10ULL, 4, 4, 4, 4 },
> +    { 0x11ULL, 0, 0, 0, 0 },
> +    { 0x12ULL, 1, 1, 1, 1 },
> +    { 0x1fULL, 0, 0, 0, 0 },
> +    { 0x20ULL, 5, 5, 5, 5 },
> +    { 0x7fULL, 0, 0, 0, 0 },
> +    { 0x80ULL, 7, 7, 7, 7 },
> +    { 0x81ULL, 0, 0, 0, 0 },
> +    { 0x9aULL, 1, 1, 1, 1 },
> +    { 0xf3ULL, 0, 0, 0, 0 },
> +    { 0xffULL, 0, 0, 0, 0 },
> +    { 0x100ULL, 8, 8, 8, 8 },
> +    { 0x101ULL, 0, 0, 0, 0 },
> +    { 0x102ULL, 1, 1, 1, 1 },
> +    { 0x1feULL, 1, 1, 1, 1 },
> +    { 0x1ffULL, 0, 0, 0, 0 },
> +    { 0x200ULL, 8, 9, 9, 9 },
> +    { 0x234ULL, 2, 2, 2, 2 },
> +    { 0x4567ULL, 0, 0, 0, 0 },
> +    { 0x7fffULL, 0, 0, 0, 0 },
> +    { 0x8000ULL, 8, 15, 15, 15 },
> +    { 0x8001ULL, 0, 0, 0, 0 },
> +    { 0xfffeULL, 1, 1, 1, 1 },
> +    { 0xffffULL, 0, 0, 0, 0 },
> +    { 0x10000ULL, 8, 16, 16, 16 },
> +    { 0x10001ULL, 0, 0, 0, 0 },
> +    { 0xfedcba98ULL, 3, 3, 3, 3 },
> +    { 0xfffffefeULL, 1, 1, 1, 1 },
> +    { 0xffffffffULL, 0, 0, 0, 0 },
> +    { 0x100000000ULL, 8, 16, 32, 32 },
> +    { 0x100000001ULL, 0, 0, 0, 0 },
> +    { 0x123456789ULL, 0, 0, 0, 0 },
> +    { 0x123456789abcdefULL, 0, 0, 0, 0 },
> +    { 0x789abcdef0123456ULL, 1, 1, 1, 1 },
> +    { 0x8000000000000000ULL, 8, 16, 32, 63 },
> +    { 0x8000000000000001ULL, 0, 0, 0, 0 },
> +    { 0xfffffffffffffffeULL, 1, 1, 1, 1 },
> +    { 0xffffffffffffffffULL, 0, 0, 0, 0 },
> +  };
> +
> +TEST_STDBIT_UI_TOPLEVEL (stdc_trailing_zeros);
> +
> +static int
> +do_test (void)
> +{
> +  TEST_STDBIT_UI (stdc_trailing_zeros, inputs);
> +  return 0;
> +}
> +
> +#include <support/test-driver.c>
> diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
> index 74a9f427b2..2adf98e71d 100644
> --- a/sysdeps/mach/hurd/i386/libc.abilist
> +++ b/sysdeps/mach/hurd/i386/libc.abilist
> @@ -2334,6 +2334,76 @@ GLIBC_2.38 strlcat F
>  GLIBC_2.38 strlcpy F
>  GLIBC_2.38 wcslcat F
>  GLIBC_2.38 wcslcpy F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/mach/hurd/x86_64/libc.abilist b/sysdeps/mach/hurd/x86_64/libc.abilist
> index 24db98d765..7c685645bb 100644
> --- a/sysdeps/mach/hurd/x86_64/libc.abilist
> +++ b/sysdeps/mach/hurd/x86_64/libc.abilist
> @@ -2114,6 +2114,76 @@ GLIBC_2.38 wprintf F
>  GLIBC_2.38 write F
>  GLIBC_2.38 writev F
>  GLIBC_2.38 wscanf F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  HURD_CTHREADS_0.3 __cthread_getspecific F
>  HURD_CTHREADS_0.3 __cthread_keycreate F
>  HURD_CTHREADS_0.3 __cthread_setspecific F
> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> index b3484be555..68eeca1c08 100644
> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
> @@ -2678,3 +2678,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> index 09c03b0e3f..34c187b721 100644
> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
> @@ -2787,6 +2787,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
> index 63761315d0..916c18ea94 100644
> --- a/sysdeps/unix/sysv/linux/arc/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
> @@ -2439,3 +2439,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> index d0860b25e0..ea95de282a 100644
> --- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
> @@ -559,6 +559,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _Exit F
>  GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
>  GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> index b93819cab4..1cdbc983e1 100644
> --- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
> @@ -556,6 +556,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _Exit F
>  GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
>  GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
> diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
> index ca5db5cde5..96d45961e2 100644
> --- a/sysdeps/unix/sysv/linux/csky/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
> @@ -2715,3 +2715,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> index e736477ce6..fbcd60c2b3 100644
> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
> @@ -2664,6 +2664,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
> index 56263a5111..c989b433c0 100644
> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
> @@ -2848,6 +2848,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> index 504b6a7fa7..52ae704171 100644
> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
> @@ -2613,6 +2613,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> index 3cdc2b9d85..0023ec1fa1 100644
> --- a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
> @@ -2199,3 +2199,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> index 1cbebfb162..d9bd6a9b56 100644
> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
> @@ -560,6 +560,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _Exit F
>  GLIBC_2.4 _IO_2_1_stderr_ D 0x98
>  GLIBC_2.4 _IO_2_1_stdin_ D 0x98
> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> index 8dd696a24e..439796d693 100644
> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
> @@ -2791,6 +2791,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> index ddfab38be7..1069d3252c 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
> @@ -2764,3 +2764,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> index 88fd2a735f..17abe08c8b 100644
> --- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
> @@ -2761,3 +2761,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> index 880e4f8bfd..799e508950 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
> @@ -2756,6 +2756,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> index 016f8fba79..1c10996cbc 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
> @@ -2754,6 +2754,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> index 0688873db5..03d9655f26 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
> @@ -2762,6 +2762,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> index 0f0b10ccb1..05e402ed30 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
> @@ -2664,6 +2664,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> index c39db78ea8..3aa81766aa 100644
> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
> @@ -2803,3 +2803,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> index 31b02d2a1e..c40c843aaf 100644
> --- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
> @@ -2185,3 +2185,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> index d23c6a0447..9714305608 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
> @@ -2830,6 +2830,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> index 6667852f18..0beb52c542 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
> @@ -2863,6 +2863,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> index 3fb527362e..cfc2ebd3ec 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
> @@ -2584,6 +2584,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> index 2c975dcad6..8c9efc5a16 100644
> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
> @@ -2898,3 +2898,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> index a13c484582..f90c94bc35 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
> @@ -2441,3 +2441,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> index cf65d8d6d4..e04ff93bd2 100644
> --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
> @@ -2641,3 +2641,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> index 3d78db8445..a7467e2850 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
> @@ -2828,6 +2828,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> index 030b26c376..fd1cb2972d 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
> @@ -2621,6 +2621,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> index 155b2c03ff..ff6e6b1a13 100644
> --- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
> @@ -2671,6 +2671,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> index 1042622943..449d92bbc5 100644
> --- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
> @@ -2668,6 +2668,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> index afa62cdbe6..e615be759a 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
> @@ -2823,6 +2823,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 _IO_fprintf F
>  GLIBC_2.4 _IO_printf F
>  GLIBC_2.4 _IO_sprintf F
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> index 9e9df3876b..bd36431dd7 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
> @@ -2636,6 +2636,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> index 893f0886dd..aea7848ed6 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
> @@ -2587,6 +2587,76 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>  GLIBC_2.4 __confstr_chk F
>  GLIBC_2.4 __fgets_chk F
>  GLIBC_2.4 __fgets_unlocked_chk F
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> index 9bcc1986a1..4ab3681914 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
> @@ -2693,3 +2693,73 @@ GLIBC_2.39 pidfd_spawn F
>  GLIBC_2.39 pidfd_spawnp F
>  GLIBC_2.39 posix_spawnattr_getcgroup_np F
>  GLIBC_2.39 posix_spawnattr_setcgroup_np F
> +GLIBC_2.39 stdc_bit_ceil_uc F
> +GLIBC_2.39 stdc_bit_ceil_ui F
> +GLIBC_2.39 stdc_bit_ceil_ul F
> +GLIBC_2.39 stdc_bit_ceil_ull F
> +GLIBC_2.39 stdc_bit_ceil_us F
> +GLIBC_2.39 stdc_bit_floor_uc F
> +GLIBC_2.39 stdc_bit_floor_ui F
> +GLIBC_2.39 stdc_bit_floor_ul F
> +GLIBC_2.39 stdc_bit_floor_ull F
> +GLIBC_2.39 stdc_bit_floor_us F
> +GLIBC_2.39 stdc_bit_width_uc F
> +GLIBC_2.39 stdc_bit_width_ui F
> +GLIBC_2.39 stdc_bit_width_ul F
> +GLIBC_2.39 stdc_bit_width_ull F
> +GLIBC_2.39 stdc_bit_width_us F
> +GLIBC_2.39 stdc_count_ones_uc F
> +GLIBC_2.39 stdc_count_ones_ui F
> +GLIBC_2.39 stdc_count_ones_ul F
> +GLIBC_2.39 stdc_count_ones_ull F
> +GLIBC_2.39 stdc_count_ones_us F
> +GLIBC_2.39 stdc_count_zeros_uc F
> +GLIBC_2.39 stdc_count_zeros_ui F
> +GLIBC_2.39 stdc_count_zeros_ul F
> +GLIBC_2.39 stdc_count_zeros_ull F
> +GLIBC_2.39 stdc_count_zeros_us F
> +GLIBC_2.39 stdc_first_leading_one_uc F
> +GLIBC_2.39 stdc_first_leading_one_ui F
> +GLIBC_2.39 stdc_first_leading_one_ul F
> +GLIBC_2.39 stdc_first_leading_one_ull F
> +GLIBC_2.39 stdc_first_leading_one_us F
> +GLIBC_2.39 stdc_first_leading_zero_uc F
> +GLIBC_2.39 stdc_first_leading_zero_ui F
> +GLIBC_2.39 stdc_first_leading_zero_ul F
> +GLIBC_2.39 stdc_first_leading_zero_ull F
> +GLIBC_2.39 stdc_first_leading_zero_us F
> +GLIBC_2.39 stdc_first_trailing_one_uc F
> +GLIBC_2.39 stdc_first_trailing_one_ui F
> +GLIBC_2.39 stdc_first_trailing_one_ul F
> +GLIBC_2.39 stdc_first_trailing_one_ull F
> +GLIBC_2.39 stdc_first_trailing_one_us F
> +GLIBC_2.39 stdc_first_trailing_zero_uc F
> +GLIBC_2.39 stdc_first_trailing_zero_ui F
> +GLIBC_2.39 stdc_first_trailing_zero_ul F
> +GLIBC_2.39 stdc_first_trailing_zero_ull F
> +GLIBC_2.39 stdc_first_trailing_zero_us F
> +GLIBC_2.39 stdc_has_single_bit_uc F
> +GLIBC_2.39 stdc_has_single_bit_ui F
> +GLIBC_2.39 stdc_has_single_bit_ul F
> +GLIBC_2.39 stdc_has_single_bit_ull F
> +GLIBC_2.39 stdc_has_single_bit_us F
> +GLIBC_2.39 stdc_leading_ones_uc F
> +GLIBC_2.39 stdc_leading_ones_ui F
> +GLIBC_2.39 stdc_leading_ones_ul F
> +GLIBC_2.39 stdc_leading_ones_ull F
> +GLIBC_2.39 stdc_leading_ones_us F
> +GLIBC_2.39 stdc_leading_zeros_uc F
> +GLIBC_2.39 stdc_leading_zeros_ui F
> +GLIBC_2.39 stdc_leading_zeros_ul F
> +GLIBC_2.39 stdc_leading_zeros_ull F
> +GLIBC_2.39 stdc_leading_zeros_us F
> +GLIBC_2.39 stdc_trailing_ones_uc F
> +GLIBC_2.39 stdc_trailing_ones_ui F
> +GLIBC_2.39 stdc_trailing_ones_ul F
> +GLIBC_2.39 stdc_trailing_ones_ull F
> +GLIBC_2.39 stdc_trailing_ones_us F
> +GLIBC_2.39 stdc_trailing_zeros_uc F
> +GLIBC_2.39 stdc_trailing_zeros_ui F
> +GLIBC_2.39 stdc_trailing_zeros_ul F
> +GLIBC_2.39 stdc_trailing_zeros_ull F
> +GLIBC_2.39 stdc_trailing_zeros_us F
>
> --
> Joseph S. Myers
> joseph@codesourcery.com