Struct Pcg64 

pub struct Pcg64 { /* private fields */ }

PCG64 PRNG

A fast, high-quality PRNG with 128-bit state. Excellent statistical properties and small code footprint. Suitable for simulations and non-cryptographic randomness.

Implementations

impl Pcg64

pub fn new(seed: u64) -> Self

Create a new PCG64 from a seed

pub fn from_seed_obj(seed: &Seed) -> Result<Self>

Create from a Seed object

pub fn from_state(state: u64, inc: u64) -> Self

Create with custom state and increment

pub fn next_u32(&mut self) -> u32

Generate the next u32 value

pub fn next_u64(&mut self) -> u64

Generate the next u64 value

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

Fill a buffer with random bytes

pub fn save_state(&self) -> [u64; 2]

Save the current state

pub fn restore_state(&mut self, state: [u64; 2])

Restore state from saved state

Trait Implementations

impl Clone for Pcg64

fn clone(&self) -> Pcg64

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Pcg64

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl DeterministicRng for Pcg64

fn is_deterministic(&self) -> bool

Check if the RNG is in a deterministic state

impl Rng for Pcg64

fn next_u32(&mut self) -> u32

Generate the next u32 random value

fn next_u64(&mut self) -> u64

Generate the next u64 random value

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

Fill a byte buffer with random data

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

Try to fill a byte buffer with random data (may fail)

impl SeedableRng for Pcg64

type Seed = Seed

Seed type for this RNG

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

Create a new RNG from a seed

fn reseed(&mut self, seed: Self::Seed) -> Result<()>

Reseed the RNG with a new seed