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authorusa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-08-27 06:29:47 (GMT)
committerusa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-08-27 06:29:47 (GMT)
commit0cfe185f39d575f9c620bd14707a81bd5c29fe11 (patch)
tree144af7038923cb353364032967dd952e9ce5c1e6 /math.c
parent909477ec1de6f7f89d29405eb3ad268ecbd3ebf7 (diff)
* 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
Diffstat (limited to 'math.c')
-rw-r--r--math.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/math.c b/math.c
index 5461763..e3a78f7 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);