Message ID | 20170626220330.6785-5-laurent@vivier.eu |
---|---|
State | New |
Headers | show |
Aurélien or Peter, could you ACK this one? Thanks, Laurent Le 27/06/2017 à 00:03, Laurent Vivier a écrit : > Add a function to round a floatx80 to the defined precision > (floatx80_rounding_precision) > > Signed-off-by: Laurent Vivier <laurent@vivier.eu> > Reviewed-by: Richard Henderson <rth@twiddle.net> > --- > fpu/softfloat.c | 15 +++++++++++++++ > include/fpu/softfloat.h | 1 + > 2 files changed, 16 insertions(+) > > diff --git a/fpu/softfloat.c b/fpu/softfloat.c > index 7af14e2..e9bf359 100644 > --- a/fpu/softfloat.c > +++ b/fpu/softfloat.c > @@ -5086,6 +5086,21 @@ float128 floatx80_to_float128(floatx80 a, float_status *status) > } > > /*---------------------------------------------------------------------------- > +| Rounds the extended double-precision floating-point value `a' > +| and returns the result as an extended double-precision floating-point > +| value. The operation is performed according to the IEC/IEEE Standard for > +| Binary Floating-Point Arithmetic. > +*----------------------------------------------------------------------------*/ > + > +floatx80 floatx80_round(floatx80 a, float_status *status) > +{ > + return roundAndPackFloatx80(status->floatx80_rounding_precision, > + extractFloatx80Sign(a), > + extractFloatx80Exp(a), > + extractFloatx80Frac(a), 0, status); > +} > + > +/*---------------------------------------------------------------------------- > | Rounds the extended double-precision floating-point value `a' to an integer, > | and returns the result as an extended quadruple-precision floating-point > | value. The operation is performed according to the IEC/IEEE Standard for > diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h > index f1288ef..d9689ec 100644 > --- a/include/fpu/softfloat.h > +++ b/include/fpu/softfloat.h > @@ -621,6 +621,7 @@ float128 floatx80_to_float128(floatx80, float_status *status); > /*---------------------------------------------------------------------------- > | Software IEC/IEEE extended double-precision operations. > *----------------------------------------------------------------------------*/ > +floatx80 floatx80_round(floatx80 a, float_status *status); > floatx80 floatx80_round_to_int(floatx80, float_status *status); > floatx80 floatx80_add(floatx80, floatx80, float_status *status); > floatx80 floatx80_sub(floatx80, floatx80, float_status *status); >
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 7af14e2..e9bf359 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -5086,6 +5086,21 @@ float128 floatx80_to_float128(floatx80 a, float_status *status) } /*---------------------------------------------------------------------------- +| Rounds the extended double-precision floating-point value `a' +| and returns the result as an extended double-precision floating-point +| value. The operation is performed according to the IEC/IEEE Standard for +| Binary Floating-Point Arithmetic. +*----------------------------------------------------------------------------*/ + +floatx80 floatx80_round(floatx80 a, float_status *status) +{ + return roundAndPackFloatx80(status->floatx80_rounding_precision, + extractFloatx80Sign(a), + extractFloatx80Exp(a), + extractFloatx80Frac(a), 0, status); +} + +/*---------------------------------------------------------------------------- | Rounds the extended double-precision floating-point value `a' to an integer, | and returns the result as an extended quadruple-precision floating-point | value. The operation is performed according to the IEC/IEEE Standard for diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index f1288ef..d9689ec 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -621,6 +621,7 @@ float128 floatx80_to_float128(floatx80, float_status *status); /*---------------------------------------------------------------------------- | Software IEC/IEEE extended double-precision operations. *----------------------------------------------------------------------------*/ +floatx80 floatx80_round(floatx80 a, float_status *status); floatx80 floatx80_round_to_int(floatx80, float_status *status); floatx80 floatx80_add(floatx80, floatx80, float_status *status); floatx80 floatx80_sub(floatx80, floatx80, float_status *status);