Struct SplitMix64 

pub struct SplitMix64 { /* private fields */ }

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.

Implementations

impl SplitMix64

pub fn state(&self) -> [u8; 8]

Return the internal state of the generator as little-endian bytes that can be passed to SeedableRng::from_seed to reconstruct an identical generator.

Trait Implementations

impl Clone for SplitMix64

fn clone(&self) -> SplitMix64

Returns a duplicate of the value.

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 PartialEq for SplitMix64

fn eq(&self, other: &SplitMix64) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl SeedableRng for SplitMix64

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

Create a new SplitMix64.

fn seed_from_u64(seed: u64) -> SplitMix64

Seed a SplitMix64 from a u64.

type Seed = [u8; 8]

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

fn from_rng<R>(rng: &mut R) -> Self

where R: Rng + ?Sized,

Create a new PRNG seeded from an infallible Rng.

fn try_from_rng<R>(rng: &mut R) -> Result<Self, <R as TryRng>::Error>

where R: TryRng + ?Sized,

Create a new PRNG seeded from a potentially fallible Rng.

fn fork(&mut self) -> Self

where Self: Rng,

Fork this PRNG

fn try_fork(&mut self) -> Result<Self, Self::Error>

where Self: TryRng,

Fork this PRNG

impl TryRng for SplitMix64

type Error = Infallible

The type returned in the event of a RNG error.

fn try_next_u32(&mut self) -> Result<u32, Self::Error>

Return the next random u32.

fn try_next_u64(&mut self) -> Result<u64, Self::Error>

Return the next random u64.

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

Fill dst entirely with random data.

impl Eq for SplitMix64

impl StructuralPartialEq for SplitMix64