drop floating point from the main loop

[retrobench] / src / util.h

diff --git a/src/util.h b/src/util.h
index 001aedc..9b04f0d 100644 (file)
--- a/src/util.h
+++ b/src/util.h
@@ -1,6 +1,11 @@
 #ifndef UTIL_H_
 #define UTIL_H_
 
+extern int sinlut[];
+
+#define SIN(x) sinlut[(x) & 0xff]
+#define COS(x) sinlut[((x) + 64) & 0xff]
+
 int mask_to_shift(unsigned int mask);
 
 #endif /* UTIL_H_ */