nobu	2015-02-25 11:25:22 +0900 (Wed, 25 Feb 2015)

  New Revision: 49732

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=49732

  Log:
    complex.c: M_PI in VC
    
    * complex.c (_USE_MATH_DEFINES): needed for M_PI in Microsoft
      Visual C.

  Modified files:
    trunk/complex.c
Index: complex.c
===================================================================
--- complex.c	(revision 49731)
+++ complex.c	(revision 49732)
@@ -6,6 +6,10 @@ https://github.com/ruby/ruby/blob/trunk/complex.c#L6
 */
 
 #include "internal.h"
+#if defined _MSC_VER
+/* Microsoft Visual C does not define M_PI and others by default */
+# define _USE_MATH_DEFINES 1
+#endif
 #include <math.h>
 
 #define NDEBUG

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