Struct rand_xoshiro::SplitMix64

pub struct SplitMix64 { /* fields omitted */ }

A splitmix64 random number generator.

The splitmix algorithm is not suitable for cryptographic purposes, but is very fast and has a 64 bit state.

The algorithm used here is translated from the splitmix64.c reference source code by Sebastiano Vigna. For next_u32, a more efficient mixing function taken from dsiutils is used.

Trait Implementations

impl Clone for SplitMix64

fn clone(&self) -> SplitMix64

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SplitMix64

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

Formats the value using the given formatter.

impl RngCore for SplitMix64

fn next_u32(&mut self) -> u32

Return the next random u32.

fn next_u64(&mut self) -> u64

Return the next random u64.

fn fill_bytes(&mut self, dest: &mut [u8])

Fill dest with random data.

fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>

Fill dest entirely with random data.

impl SeedableRng for SplitMix64

type Seed = [u8; 8]

Seed type, which is restricted to types mutably-dereferencable as u8 arrays (we recommend [u8; N] for some N).

fn from_seed(seed: [u8; 8]) -> SplitMix64

Create a new SplitMix64.

fn seed_from_u64(seed: u64) -> SplitMix64

Seed a SplitMix64 from a u64.

pub fn from_rng<R>(rng: R) -> Result<Self, Error> where
    R: RngCore, 

Create a new PRNG seeded from another Rng.

pub fn from_entropy() -> Self

Creates a new instance of the RNG seeded via getrandom.