* win32/win32.c (signbit): allow x64.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26869 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Mar 11 01:33:30 2010  wanabe  <s.wanabe@gmail.com>
+
+	* win32/win32.c (signbit): allow x64.
+
 Thu Mar 11 01:04:48 2010  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* iseq.c (rb_iseq_clone): sets local_iseq and klass properly.

win32/win32.c

@@ -5278,11 +5278,7 @@ _ftol2_sse(double d)
 int
 signbit(double x)
 {
-#ifdef _M_IX86
     int *ip = (int *)(&x + 1) - 1;
     return *ip < 0;
-#else
-# error not supported
-#endif
 }
 #endif