From patchwork Mon Nov 4 15:27:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Liebler X-Patchwork-Id: 1189028 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=libc-alpha-return-106602-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.b="vfEtH139"; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 476HRj0pWHz9sPJ for ; Tue, 5 Nov 2019 02:54:40 +1100 (AEDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:in-reply-to:references :message-id; q=dns; s=default; b=atNqbvEOsVl1xNb7hwaXt9XEgpxldGZ yiSxYSh14+KI1KHCpcaA5Bi5pQpDZQLPyr7El2igydvNQ/JMCgyZpPapBL67yUr8 rWLGnxNSW4rjJYmuHlb8wnlZqLCPsuBkvc3+jur3P6Run515sZUo87F75uBTpig6 UAor/nINbKYs= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:in-reply-to:references :message-id; s=default; bh=kkVqnXL7Yom/dhAvPy3ZKBtkc0g=; b=vfEtH 139DTHFYJzLCfb06k/RhXFSWBxOpmM7ohL3KGdOUHLQRBBTNLr4kWYAf4IHyay5k lT07b1awX1DsZ3G6IKFVg3AvBCwBM73q/OkKOVUDfFDD8ljVyQ8MwzMUotMd+bd8 eb+DG487sTpZ/dtmaZBZAA0hirR50fWm3/PlR0= Received: (qmail 100818 invoked by alias); 4 Nov 2019 15:54:35 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 100809 invoked by uid 89); 4 Nov 2019 15:54:35 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-23.4 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.1 spammy= X-HELO: mx0a-001b2d01.pphosted.com From: Stefan Liebler To: libc-alpha@sourceware.org Cc: Stefan Liebler Subject: [PATCH 02/17] S390: Use load-fp-integer instruction for rint functions. Date: Mon, 4 Nov 2019 16:27:09 +0100 In-Reply-To: <1572881244-6781-1-git-send-email-stli@linux.ibm.com> References: <1572881244-6781-1-git-send-email-stli@linux.ibm.com> x-cbid: 19110415-0020-0000-0000-000003826D84 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19110415-0021-0000-0000-000021D89276 Message-Id: <1572881244-6781-2-git-send-email-stli@linux.ibm.com> If compiled with z196 zarch support, the load-fp-integer instruction is used to implement rint, rintf, rintl. Otherwise the common-code implementation is used. --- sysdeps/s390/fpu/s_rint.c | 39 +++++++++++++++++++++++++++++++++++++ sysdeps/s390/fpu/s_rintf.c | 39 +++++++++++++++++++++++++++++++++++++ sysdeps/s390/fpu/s_rintl.c | 40 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 sysdeps/s390/fpu/s_rint.c create mode 100644 sysdeps/s390/fpu/s_rintf.c create mode 100644 sysdeps/s390/fpu/s_rintl.c diff --git a/sysdeps/s390/fpu/s_rint.c b/sysdeps/s390/fpu/s_rint.c new file mode 100644 index 0000000000..17442cab21 --- /dev/null +++ b/sysdeps/s390/fpu/s_rint.c @@ -0,0 +1,39 @@ +/* rint() - S390 version. + Copyright (C) 2019 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 + . */ + +#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT +# define NO_MATH_REDIRECT +# include +# include + +double +__rint (double x) +{ + double y; + /* The z196 zarch "load fp integer" (fidbra) instruction is rounding + x to the nearest integer according to current rounding mode (M3-field: 0) + where inexact exceptions are not suppressed (M4-field: 0). */ + __asm__ ("fidbra %0,0,%1,0" : "=f" (y) : "f" (x)); + return y; +} +libm_alias_double (__rint, rint) + +#else +# include +#endif diff --git a/sysdeps/s390/fpu/s_rintf.c b/sysdeps/s390/fpu/s_rintf.c new file mode 100644 index 0000000000..3c20edcf38 --- /dev/null +++ b/sysdeps/s390/fpu/s_rintf.c @@ -0,0 +1,39 @@ +/* rintf() - S390 version. + Copyright (C) 2019 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 + . */ + +#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT +# define NO_MATH_REDIRECT +# include +# include + +float +__rintf (float x) +{ + float y; + /* The z196 zarch "load fp integer" (fiebra) instruction is rounding + x to the nearest integer according to current rounding mode (M3-field: 0) + where inexact exceptions are not suppressed (M4-field: 0). */ + __asm__ ("fiebra %0,0,%1,0" : "=f" (y) : "f" (x)); + return y; +} +libm_alias_float (__rint, rint) + +#else +# include +#endif diff --git a/sysdeps/s390/fpu/s_rintl.c b/sysdeps/s390/fpu/s_rintl.c new file mode 100644 index 0000000000..8ceaceded0 --- /dev/null +++ b/sysdeps/s390/fpu/s_rintl.c @@ -0,0 +1,40 @@ +/* rintl() - S390 version. + Copyright (C) 2019 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 + . */ + +#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT +# define NO_MATH_REDIRECT +# include +# include +# include + +_Float128 +__rintl (_Float128 x) +{ + _Float128 y; + /* The z196 zarch "load fp integer" (fixbra) instruction is rounding + x to the nearest integer according to current rounding mode (M3-field: 0) + where inexact exceptions are not suppressed (M4-field: 0). */ + __asm__ ("fixbra %0,0,%1,0" : "=f" (y) : "f" (x)); + return y; +} +libm_alias_ldouble (__rint, rint) + +#else +# include +#endif