Random

Three random number generators are available, each with different tradeoffs.

import random.rng

LCG (Linear Congruential Generator)

Fastest, lowest quality. Good for non-critical randomness.

let rng = LCG.new(seed)
let value = rng.next()

PCG (Permuted Congruential Generator)

Good balance of speed and quality. Recommended for general use.

let rng = PCG.new(seed)
let value = rng.next()

Xorshift

Simple and fast with reasonable quality.

let rng = Xorshift.new(seed)
let value = rng.next()

Example

fun main() {
    let rng = PCG.new(42)
    var i = 0
    while i < 10 {
        println("Random: {rng.next()}")
        i = i + 1
    }
}

UWW Deterministic Random

For deterministic/WASM contexts:

import uww

let rand = uww_deterministic_rand(seed)