1 files changed, 15 insertions, 0 deletions
diff --git a/include/sinlut.h b/include/sinlut.h
new file mode 100644
index 0000000..126679f
--- /dev/null
+++ b/include/sinlut.h
@@ -0,0 +1,15 @@
+#include "types.h"
+
+#ifndef SINLUT_H
+#define SINLUT_H
+
+extern const short sin_lut[512];
+
+static inline s32 lu_sin(u32 theta)
+{   return sin_lut[(theta>>7)&0x1FF];   }
+
+//! Look-up a cosine value
+static inline s32 lu_cos(u32 theta)
+{   return sin_lut[((theta>>7)+128)&0x1FF]; }
+
+#endif //SINLUT_H