From 22562bb222a91e0ecc416b19accd98e10c0d26be Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 3 Jan 2014 20:56:18 +0000 Subject: Fix soft-float ldbl-128ibm atan2l signs of zero results (bug 16390). This patch fixes bug 16390, incorrect signs of zero results from ldbl-128ibm atan2l, soft-float only. The problem is a longstanding GCC bug with fabsl not being correct for signed zero for soft float, and the fix is using -fno-builtin-fabsl as a workaround, as already done for various other source files. Tested powerpc-nofpu. * sysdeps/powerpc/nofpu/Makefile [$(subdir) = math] (CFLAGS-e_atan2l.c): Use -fno-builtin-fabsl. --- ChangeLog | 6 ++++++ NEWS | 2 +- sysdeps/powerpc/nofpu/Makefile | 1 + 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 1029679..0e6850d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2014-01-03 Joseph Myers + + [BZ #16390] + * sysdeps/powerpc/nofpu/Makefile [$(subdir) = math] + (CFLAGS-e_atan2l.c): Use -fno-builtin-fabsl. + 2014-01-03 Adhemerval Zanella * sysdeps/powerpc/powerpc64/multiarch/strcasecmp-power7.S: Remove diff --git a/NEWS b/NEWS index e0ea97a..7757c32 100644 --- a/NEWS +++ b/NEWS @@ -24,7 +24,7 @@ Version 2.19 16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214, 16245, 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338, 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16384, 16385, - 16386. + 16386, 16390. * Slovenian translations for glibc messages have been contributed by the Translation Project's Slovenian team of translators. diff --git a/sysdeps/powerpc/nofpu/Makefile b/sysdeps/powerpc/nofpu/Makefile index 9de7c43..99761ef 100644 --- a/sysdeps/powerpc/nofpu/Makefile +++ b/sysdeps/powerpc/nofpu/Makefile @@ -15,6 +15,7 @@ CPPFLAGS += -I../soft-fp/ # gcc-4.1.1 and may be too late for gcc-4.2. So we need these flags # until the fix in a gcc release and glibc drops support for earlier # versions of gcc. +CFLAGS-e_atan2l.c += -fno-builtin-fabsl CFLAGS-e_hypotl.c += -fno-builtin-fabsl CFLAGS-e_powl.c += -fno-builtin-fabsl CFLAGS-s_ccoshl.c += -fno-builtin-fabsl -- cgit v1.1