Struct xorshift::splitmix64::SplitMix64

pub struct SplitMix64(_);

A random number generator that uses the splitmix64 algorithm [1].

Description

Quoted from [1].

This is a fixed-increment version of Java 8's SplittableRandom generator [2] and [3].

It is a very fast generator passing BigCrush, and it can be useful if for some reason you absolutely want 64 bits of state; otherwise, we rather suggest to use a xoroshiro128+ (for moderately parallel computations) or xorshift1024* (for massively parallel computations) generator.

[1]: Sebastiano Vigna, splitmix64

[2]: Guy L. Steele, Jr., Doug Lea, and Christine H. Flood. 2014. Fast splittable pseudorandom number generators

[3]: JavaSE, SplittableRandom

Trait Implementations

impl Copy for SplitMix64

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 Rng 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 next_f32(&mut self) -> f32

Return the next random f32 selected from the half-open interval [0, 1).

fn next_f64(&mut self) -> f64

Return the next random f64 selected from the half-open interval [0, 1).

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

Fill dest with random data.

fn gen<T>(&mut self) -> T where
    T: Rand, 

Return a random value of a Rand type.

fn gen_iter<T>(&'a mut self) -> Generator<'a, T, Self> where
    T: Rand, 

Return an iterator that will yield an infinite number of randomly generated items.

fn gen_range<T>(&mut self, low: T, high: T) -> T where
    T: SampleRange + PartialOrd<T>, 

Generate a random value in the range [low, high).

fn gen_weighted_bool(&mut self, n: u32) -> bool

Return a bool with a 1 in n chance of true

fn gen_ascii_chars(&'a mut self) -> AsciiGenerator<'a, Self>

Return an iterator of random characters from the set A-Z,a-z,0-9.

fn choose<T>(&mut self, values: &'a [T]) -> Option<&'a T>

Return a random element from values.

fn choose_mut<T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>

Return a mutable pointer to a random element from values.

fn shuffle<T>(&mut self, values: &mut [T])

Shuffle a mutable slice in place.

impl SeedableRng<u64> for SplitMix64

fn reseed(&mut self, seed: u64)

Reseed an RNG with the given seed.

fn from_seed(seed: u64) -> SplitMix64

Create a new RNG with the given seed.

impl Rand for SplitMix64

fn rand<R: Rng>(other: &mut R) -> SplitMix64

Generates a random instance of this type using the specified source of randomness.