@ fastrand (10011)
@ Description:
@ Returns a pseudo-random number.
-@ Probably not as good as `random`, but much faster since it doesn't use XOR.
+@ Probably not as good as `random`, but much faster since it does not use XOR.
@ Based on the POSIX.1-2001 example for random().
@ Before using for the first time, seed heap[0] with a value.
@ Call Stack: