// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use const mul = 0x19660D; const inc = 0x3C6EF35F; const eps = 1 / 0x100000000; export default function lcg(seed = Math.random()) { let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0; return () => (state = mul * state + inc | 0, eps * (state >>> 0)); }