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authorngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-08-05 07:03:21 (GMT)
committerngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-08-05 07:03:21 (GMT)
commit700aeee754648204314b644f24a75aaebe438ca7 (patch)
treeb309e488f1c7311885f1bf34f744d8253911f334 /math.c
parent1ded4dbd110868891d1255bc11845c1130a0ca3e (diff)
* complex.c (f_signbit): fix compile error in gcc4 on Solaris with
CFLAGS="-std=gnu99". [ruby-dev:44355] fix [Bug #5159] * math.c: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32858 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'math.c')
-rw-r--r--math.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/math.c b/math.c
index 98b3272..276b2cb 100644
--- a/math.c
+++ b/math.c
@@ -14,8 +14,9 @@
#include <math.h>
#include <errno.h>
-#if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun__)
- extern int signbit(double x);
+#if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun__) && \
+ !defined(signbit)
+ extern int signbit(double);
#endif
#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))