Struct xoroshiro::rng::SplitMix64

pub struct SplitMix64 { /* fields omitted */ }

A splitmix random number generator.

The splitmix algorithm is not suitable for cryptographic purposes, but is very fast and has a 64 bit state. Usually XoroShiro128 should be prefered. If you do not know for sure that it fits your requirements, use a more secure one such as IsaacRng or OsRng.

The algorithm used here is translated from the splitmix64.c reference source code by Sebastiano Vigna.

Methods

impl SplitMix64

pub fn new_unseeded() -> SplitMix64

Creates a new SplitMix64 instance which is not seeded.

The initial values of this RNG are constants, so all generators created by this function will yield the same stream of random numbers. It is highly recommended that this is created through SeedableRng instead of this function.

pub fn from_seed_u64(seed: u64) -> SplitMix64

Trait Implementations

impl Debug for SplitMix64

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

Formats the value using the given formatter.

impl Clone for SplitMix64

fn clone(&self) -> SplitMix64

Returns a copy of the value.

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

Performs copy-assignment from source.

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

Create a new PRNG seeded from another Rng.