Struct SeededRng 

pub struct SeededRng { /* private fields */ }

A small, deterministic, WASM-safe PRNG (SplitMix64).

SplitMix64 is chosen for being tiny, allocation-free, and identical on every target (no platform Rng, no Math.random), so a seed reproduces bit-for-bit across native and WASM.

Implementations

impl SeededRng

pub fn new(seed: SchedSeed) -> Self

A fresh RNG from a seed.

pub fn next_u64(&mut self) -> u64

Next 64-bit value (SplitMix64).

pub fn below(&mut self, n: usize) -> usize

A uniformly-distributed index in [0, n). Returns 0 when n <= 1.

Trait Implementations

impl Clone for SeededRng

fn clone(&self) -> SeededRng

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SeededRng

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.