diff options
Diffstat (limited to 'math.c')
-rw-r--r-- | math.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -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); |