Cycles: Use proper constant name for 1/pi in fast math

This commit is contained in:
Sergey Sharybin 2015-02-06 15:15:55 +05:00
parent 40f237675f
commit 460681bd62

@ -154,7 +154,7 @@ ccl_device float fast_cosf(float x)
ccl_device void fast_sincosf(float x, float* sine, float* cosine)
{
/* Same argument reduction as fast_sin. */
int q = fast_rint(x * float(M_1_PI));
int q = fast_rint(x * M_1_PI_F);
float qf = q;
x = madd(qf, -0.78515625f*4, x);
x = madd(qf, -0.00024187564849853515625f*4, x);