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authorJoseph Myers <joseph@codesourcery.com>2014-01-03 20:56:18 +0000
committerJoseph Myers <joseph@codesourcery.com>2014-01-03 20:56:40 +0000
commit22562bb222a91e0ecc416b19accd98e10c0d26be (patch)
treeca6a3b3c34c8f2cce47ba4bcb982bfd4d0c481a1 /sysdeps/powerpc
parent0da43124a9b5c24fe2e877e3d94a4f3d859f0486 (diff)
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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.
Diffstat (limited to 'sysdeps/powerpc')
-rw-r--r--sysdeps/powerpc/nofpu/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/powerpc/nofpu/Makefile b/sysdeps/powerpc/nofpu/Makefile
index 9de7c43747..99761ef7f0 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