From: Joseph Myers <joseph@codesourcery.com>
Date: Tue, 9 Jan 2018 23:14:45 +0000 (+0000)
Subject: Fix powerpc-nofpu remainderl wrong sign of zero result (bug 22688).
X-Git-Tag: glibc-2.27~155
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2584ac2a4d3d5ba7da01a52e6bbc495d61974c8;p=thirdparty%2Fglibc.git

Fix powerpc-nofpu remainderl wrong sign of zero result (bug 22688).

For soft-float powerpc, the remainderl function produces zero results
with the wrong sign for various inputs.  This is another instance of
the problem with incorrect built-in fabsl expansion, so is fixed by
this patch using -fno-builtin-fabsl for this function.

Tested for powerpc (soft-float).

	[BZ #22688]
	* sysdeps/powerpc/nofpu/Makefile [$(subdir) = math]
	(CFLAGS-e_remainderl.c): New variable.
---

diff --git a/ChangeLog b/ChangeLog
index ee77ccdc095..6fd4c5b6c0e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2018-01-09  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #22688]
+	* sysdeps/powerpc/nofpu/Makefile [$(subdir) = math]
+	(CFLAGS-e_remainderl.c): New variable.
+
 	[BZ #22687]
 	* sysdeps/powerpc/nofpu/Makefile (CFLAGS-s_cacosl.c): New
 	variable.
diff --git a/sysdeps/powerpc/nofpu/Makefile b/sysdeps/powerpc/nofpu/Makefile
index 09ecdf1dcc9..75b116c0685 100644
--- a/sysdeps/powerpc/nofpu/Makefile
+++ b/sysdeps/powerpc/nofpu/Makefile
@@ -46,4 +46,5 @@ CFLAGS-w_j1l_compat.c += -fno-builtin-fabsl
 CFLAGS-e_lgammal_r.c += -fno-builtin-fabsl
 CFLAGS-e_log10l.c += -fno-builtin-fabsl
 CFLAGS-e_log2l.c += -fno-builtin-fabsl
+CFLAGS-e_remainderl.c += -fno-builtin-fabsl
 endif