From 7095366d1efc6e58639f7c76d0b515212d61247d Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 26 Apr 2009 03:43:02 +0000
Subject: * math/w_fmod.c: Also handle x=±Inf as error.
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	* math/w_fmodf.c: Likewise.
	* math/w_fmodl.c: Likewise.
	* math/libm-test.inc (fmod_test): Add tests for errno after calls for
	x=±Inf or y=0.
---
 math/w_fmod.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'math/w_fmod.c')

diff --git a/math/w_fmod.c b/math/w_fmod.c
index 43a1d8ef5c..ca01cf2ac5 100644
--- a/math/w_fmod.c
+++ b/math/w_fmod.c
@@ -35,8 +35,9 @@ static char rcsid[] = "$NetBSD: w_fmod.c,v 1.6 1995/05/10 20:48:55 jtc Exp $";
 	double z;
 	z = __ieee754_fmod(x,y);
 	if(_LIB_VERSION == _IEEE_ ||__isnan(y)||__isnan(x)) return z;
-	if(y==0.0) {
-	        return __kernel_standard(x,y,27); /* fmod(x,0) */
+	if(__isinf(x)||y==0.0) {
+		/* fmod(+-Inf,y) or fmod(x,0) */
+	        return __kernel_standard(x,y,27);
 	} else
 	    return z;
 #endif
-- 
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