Pseudorandom number generator (PRNG)

random.js

// 1993 Park-Miller linear congruential generator (LCG)
// https://en.wikipedia.org/wiki/Lehmer_random_number_generator
// Source: https://gist.github.com/blixt/f17b47c62508be59987b

// usage:
// let rand = LCG(42); 
// rand() → 0.000944073311984539
// rand() → 0.5713628428056836
// rand() → 0.2557850731536746

const LCG = s => {
  return () => {
    s = Math.imul(48271, s) | 0 % 2147483647;
    return (s & 2147483647) / 2147483648;
  };
};

export default LCG;