_RandomSeed

Variable for storing the current state when generating pseudo-random integers. _RandomSeed changes its value when calling MathRand(). Use MathSrand() to set the required initial condition.

x random number received by MathRand() function is calculated in the following way at each call:

x=_RandomSeed*214013+2531011;
_RandomSeed=x;
x=(x>>16)&0x7FFF;