// Seed the random number generater with time() so we don't see the
// same sequence every time
-void sg_srandom(void);
+void sg_srandom_time(void);
+
+// Seed the random number generater with your own seed so can set up
+// repeatable randomization.
+void sg_srandom( unsigned int seed );
// return a random number between [0.0, 1.0)
double sg_random(void);