Random (Noise) Generators
Opcodes that generate random numbers are:
- betarand
 - bexprnd
 - cauchy
 - cauchyi
 - cuserrnd
 - duserrnd
 - dust
 - dust2
 - exprand
 - exprandi
 - fractalnoise
 - gauss
 - gausstrig
 - jitter
 - jitter2
 - lfsr
 - linrand
 - noise
 - pcauchy
 - pinkish
 - pinker
 - poisson
 - rand
 - randc
 - randh
 - randi
 - rnd31
 - random
 - randomh
 - randomi
 - trandom
 - trirand
 - unirand
 - urd
 - urandom
 - weibull
 
See seed which sets the global seed value for all x-class noise generators, as well as other opcodes that use a random call, such as grain. And getseed returns the global seed value used for all x-class noise generators.
rand, randh, randi, rnd(x) and birnd(x) are not affected by seed. Use rndseed for that.
See also functions which generate random numbers in the section Random Functions.