Struct pcg_rand::Pcg32Basic

pub struct Pcg32Basic { /* fields omitted */ }

A low overhead very simple PCG impementation

This is mostly useful for demonstrating how PCG works. If you want better statistical performance you should use one of the predefined types like Pcg32.

Implementations

impl Pcg32Basic

pub fn new_unseeded() -> Pcg32Basic

Creates a new PCG without specifying a seed. WARNING: Every PCG created with this method will produce the same output. In most cases a seeded PCG will be more useful, please check the references for rand::SeedableRng and rand::FromEntropy for methods to seed a PCG.

Trait Implementations

impl RngCore for Pcg32Basic

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 Pcg32Basic

type Seed = PcgSeeder<u64>

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

fn from_seed(mut seed: Self::Seed) -> Pcg32Basic

Create a new PRNG using the given seed.

pub fn seed_from_u64(state: u64) -> Self

Create a new PRNG using a u64 seed.

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

Create a new PRNG seeded from another Rng.

pub fn from_entropy() -> Self

Creates a new instance of the RNG seeded via getrandom.