[Web] Implement linear congruential generator, make runtime seedable #16722
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This PR implements
LinearCongruentialGenerator
in TVMjs, following the C++ counterpart in #8642. The motivation is that we want to seed autoregressive generation to make results reproducible, supporting the OpenAI fieldseed
. The main function isnextInt()
, which generates a number(0, 2^32 - 1)
non-inclusive.Subsequently, we change all
Math.random()
inruntime.ts
tothis.rng.randomFloat()
, exposing APIInstance.setSeed()
.Unit tests are added for
LinearCongruentialGenerator
for testing seed and coverage.