Struct rand_xoshiro::Xoroshiro64StarStar

pub struct Xoroshiro64StarStar { /* fields omitted */ }

A xoroshiro64** random number generator.

The xoshiro64** algorithm is not suitable for cryptographic purposes, but is very fast and has excellent statistical properties.

The algorithm used here is translated from the xoroshiro64starstar.c reference source code by David Blackman and Sebastiano Vigna.

Trait Implementations

impl Clone for Xoroshiro64StarStar

fn clone(&self) -> Xoroshiro64StarStar

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Xoroshiro64StarStar

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

Formats the value using the given formatter.

impl RngCore for Xoroshiro64StarStar

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 Xoroshiro64StarStar

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]) -> Xoroshiro64StarStar

Create a new Xoroshiro64StarStar. If seed is entirely 0, it will be mapped to a different seed.

fn seed_from_u64(seed: u64) -> Xoroshiro64StarStar

Seed a Xoroshiro64StarStar from a u64 using SplitMix64.

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.