From 0cfe185f39d575f9c620bd14707a81bd5c29fe11 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 27 Aug 2010 06:29:47 +0000
Subject: * math.c (math_atan2): you should know that M_PI is not the feature  
 of C90.   fixed build failure caused by r29115.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29119 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 math.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'math.c')

diff --git a/math.c b/math.c
index 5461763d56..e3a78f74e3 100644
--- a/math.c
+++ b/math.c
@@ -51,6 +51,9 @@ extern VALUE rb_to_float(VALUE val);
 static VALUE
 math_atan2(VALUE obj, VALUE y, VALUE x)
 {
+#ifndef M_PI
+# define M_PI 3.14159265358979323846
+#endif
     double dx, dy;
     Need_Float2(y, x);
     dx = RFLOAT_VALUE(x);
-- 
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