Struct rand_pcg::Mcg128Xsl64 [−][src]
pub struct Mcg128Xsl64 { /* fields omitted */ }
A PCG random number generator (XSL 128/64 (MCG) variant).
Permuted Congruential Generator with 128-bit state, internal Multiplicative Congruential Generator, and 64-bit output via "xorshift low (bits), random rotation" output function.
This is a 128-bit MCG with the PCG-XSL-RR output function.
Note that compared to the standard pcg64
(128-bit LCG with PCG-XSL-RR
output function), this RNG is faster, also has a long cycle, and still has
good performance on statistical tests.
Note: this RNG is only available using Rust 1.26 or later.
Methods
impl Mcg128Xsl64
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impl Mcg128Xsl64
pub fn new(state: u128) -> Self
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pub fn new(state: u128) -> Self
Construct an instance compatible with PCG seed.
Note that PCG specifies a default value for the parameter:
state = 0xcafef00dd15ea5e5
Trait Implementations
impl Clone for Mcg128Xsl64
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impl Clone for Mcg128Xsl64
fn clone(&self) -> Mcg128Xsl64
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fn clone(&self) -> Mcg128Xsl64
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Debug for Mcg128Xsl64
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impl Debug for Mcg128Xsl64
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl SeedableRng for Mcg128Xsl64
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impl SeedableRng for Mcg128Xsl64
We use a single 126-bit seed to initialise the state and select a stream.
Two seed
bits (lowest order of last byte) are ignored.
type Seed = [u8; 16]
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: Self::Seed) -> Self
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fn from_seed(seed: Self::Seed) -> Self
Create a new PRNG using the given seed. Read more
fn seed_from_u64(state: u64) -> Self
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fn seed_from_u64(state: u64) -> Self
Create a new PRNG using a u64
seed. Read more
fn from_rng<R>(rng: R) -> Result<Self, Error> where
R: RngCore,
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fn from_rng<R>(rng: R) -> Result<Self, Error> where
R: RngCore,
Create a new PRNG seeded from another Rng
. Read more
impl RngCore for Mcg128Xsl64
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impl RngCore for Mcg128Xsl64
fn next_u32(&mut self) -> u32
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fn next_u32(&mut self) -> u32
Return the next random u32
. Read more
fn next_u64(&mut self) -> u64
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fn next_u64(&mut self) -> u64
Return the next random u64
. Read more
fn fill_bytes(&mut self, dest: &mut [u8])
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fn fill_bytes(&mut self, dest: &mut [u8])
Fill dest
with random data. Read more
fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>
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fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>
Fill dest
entirely with random data. Read more
Auto Trait Implementations
impl Send for Mcg128Xsl64
impl Send for Mcg128Xsl64
impl Sync for Mcg128Xsl64
impl Sync for Mcg128Xsl64