1 files changed, 3 insertions, 1 deletions

diff --git a/donut.h b/donut.h
index 568ae80..e4e0519 100644
--- a/donut.h
+++ b/donut.h
@@ -5,6 +5,8 @@
 #include <stdio.h>
 #include <math.h>
 
+#define MAX(a,b) ((a)>(b)?(a):(b))
+
 #define SCREEN_WIDTH 640
 #define SCREEN_HEIGHT 640
 
@@ -26,4 +28,4 @@ point3d rotate_x(point3d p, double a);
 point3d rotate_y(point3d p, double a);
 point3d rotate_z(point3d p, double a);
 
-#endif
\ No newline at end of file
+#endif