[−][src]Struct rand_xoshiro::Xoshiro256StarStar
A xoshiro256** random number generator.
The xoshiro256** algorithm is not suitable for cryptographic purposes, but is very fast and has excellent statistical properties.
The algorithm used here is translated from the xoshiro256starstar.c
reference source code by
David Blackman and Sebastiano Vigna.
Methods
impl Xoshiro256StarStar
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pub fn jump(&mut self)
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Jump forward, equivalently to 2^128 calls to next_u64()
.
This can be used to generate 2^128 non-overlapping subsequences for parallel computations.
use rand::SeedableRng; use rand_xoshiro::Xoshiro256StarStar; let rng1 = Xoshiro256StarStar::seed_from_u64(0); let mut rng2 = rng1.clone(); rng2.jump(); let mut rng3 = rng2.clone(); rng3.jump();
pub fn long_jump(&mut self)
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Jump forward, equivalently to 2^192 calls to next_u64()
.
This can be used to generate 2^64 starting points, from each of which
jump()
will generate 2^64 non-overlapping subsequences for parallel
distributed computations.
Trait Implementations
impl Debug for Xoshiro256StarStar
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impl Clone for Xoshiro256StarStar
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fn clone(&self) -> Xoshiro256StarStar
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl SeedableRng for Xoshiro256StarStar
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type Seed = [u8; 32]
Seed type, which is restricted to types mutably-dereferencable as u8
arrays (we recommend [u8; N]
for some N
). Read more
fn from_seed(seed: [u8; 32]) -> Xoshiro256StarStar
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Create a new Xoshiro256StarStar
. If seed
is entirely 0, it will be
mapped to a different seed.
fn seed_from_u64(seed: u64) -> Xoshiro256StarStar
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Seed a Xoshiro256StarStar
from a u64
using SplitMix64
.
fn from_rng<R>(rng: R) -> Result<Self, Error> where
R: RngCore,
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R: RngCore,
Create a new PRNG seeded from another Rng
. Read more
impl RngCore for Xoshiro256StarStar
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fn next_u32(&mut self) -> u32
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fn next_u64(&mut self) -> u64
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fn fill_bytes(&mut self, dest: &mut [u8])
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fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>
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Auto Trait Implementations
impl Send for Xoshiro256StarStar
impl Sync for Xoshiro256StarStar
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,