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| -rw-r--r-- | progs/demos/ray.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/progs/demos/ray.c b/progs/demos/ray.c index eb1d19f863..c2d8e4f545 100644 --- a/progs/demos/ray.c +++ b/progs/demos/ray.c @@ -49,7 +49,9 @@ static GLint Frames = 0; #define clamp255(a) ( (a)<(0.0f) ? (0.0f) : ((a)>(255.0f) ? (255.0f) : (a)) ) +#ifndef fabs #define fabs(x) ((x)<0.0f?-(x):(x)) +#endif #define vequ(a,b) { (a)[0]=(b)[0]; (a)[1]=(b)[1]; (a)[2]=(b)[2]; } #define vsub(a,b,c) { (a)[0]=(b)[0]-(c)[0]; (a)[1]=(b)[1]-(c)[1]; (a)[2]=(b)[2]-(c)[2]; } |