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-rw-r--r--math.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/math.c b/math.c
index 4356a34..4a209c7 100644
--- a/math.c
+++ b/math.c
@@ -6,7 +6,7 @@
$Date: 1994/11/01 08:28:03 $
created at: Tue Jan 25 14:12:56 JST 1994
- Copyright (C) 1995 Yukihiro Matsumoto
+ Copyright (C) 1993-1995 Yukihiro Matsumoto
************************************************/
@@ -110,9 +110,18 @@ Init_Math()
M_Math = rb_define_module("Math");
rb_extend_object(M_Math, M_Math);
+#ifdef M_PI
rb_define_const(M_Math, "PI", float_new(M_PI));
+#else
+ rb_define_const(M_Math, "PI", float_new(atan(1.0)*4.0));
+#endif
+
+#ifdef M_E
rb_define_const(M_Math, "E", float_new(M_E));
-
+#else
+ rb_define_const(M_Math, "E", float_new(exp(1.0)));
+#endif
+
rb_define_method(M_Math, "atan2", Fmath_atan2, 2);
rb_define_method(M_Math, "cos", Fmath_cos, 1);
rb_define_method(M_Math, "sin", Fmath_sin, 1);