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6.5.8 Pseudo-random number generator ¶

The pseudo-random number generator is initialised based on the time, so in the usual case it will start at a different value in different sessions.

rnd ( – x  ) gforth

x is a random number, with all bits randomly set.

random ( u1 – u2  ) gforth

U2 is a random number 0<=u2<u1.

seed! ( x –  ) gforth “seed-store”

Set seed for rnd and random to a specific value, resulting in a deterministic sequence.