yugui	2011-07-31 23:17:40 +0900 (Sun, 31 Jul 2011)

  New Revision: 32786

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=32786

  Log:
    Forward-ports r32777 from branches/ruby_1_9_3 to trunk.
    --
    * complex.c (f_signbit): gcc4 on Solaris DOES have signbit but does
      not have it on header.
    
    * math.c: ditto.

  Modified files:
    trunk/ChangeLog
    trunk/complex.c
    trunk/math.c

Index: complex.c
===================================================================
--- complex.c	(revision 32785)
+++ complex.c	(revision 32786)
@@ -1173,6 +1173,9 @@
 inline static VALUE
 f_signbit(VALUE x)
 {
+#if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun__)
+    extern int signbit(double x);
+#endif
     switch (TYPE(x)) {
       case T_FLOAT: {
 	double f = RFLOAT_VALUE(x);
Index: math.c
===================================================================
--- math.c	(revision 32785)
+++ math.c	(revision 32786)
@@ -14,6 +14,10 @@
 #include <math.h>
 #include <errno.h>
 
+#if defined(HAVE_SIGNBIT) && defined(__GNUC__) && defined(__sun__)
+    extern int signbit(double x);
+#endif
+
 #define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
 
 VALUE rb_mMath;
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 32785)
+++ ChangeLog	(revision 32786)
@@ -1,3 +1,10 @@
+Sun Jul 31 21:16:02 2011  Yuki Sonoda (Yugui)  <yugui@y...>
+
+	* complex.c (f_signbit): gcc4 on Solaris DOES have signbit but does
+	  not have it on header.
+
+	* math.c: ditto.
+
 Sun Jul 31 21:09:04 2011  Yuki Sonoda (Yugui)  <yugui@y...>
 
 	* common.mk (node_name.inc): Use $(Q) for consistency.

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