// JLH 04/01/2011 Created this file
//
-#define PI 3.14159265358979323846264338327
+#define PI 3.14159265358979323846264338327
+#define PI_OVER_2 (PI / 2.0)
+#define PI3_OVER_2 ((3.0 * PI) / 2.0)
#define RADIANS_TO_DEGREES (180.0 / PI)
#define DEGREES_TO_RADIANS (PI / 180.0)