Struct DefaultRand

pub struct DefaultRand { /* private fields */ }

Default random generator which is good for most applications.

This currently uses Xoroshiro128StarStar, but that may be changed in the future (with a major version bump).

Implementations

impl DefaultRand

pub fn initialize_states(seed: u64, num_states: usize) -> Vec<Self>

Available on non-target_os="cuda" only.

Initializes many states such that each state is offset in the main sequence by at least 2**64 elements (based on the current default generator). Such that every state is independent from the others as long as no state requests more than 2**64 random numbers.

Trait Implementations

impl Clone for DefaultRand

fn clone(&self) -> DefaultRand

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DefaultRand

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

Formats the value using the given formatter.

impl PartialEq for DefaultRand

fn eq(&self, other: &DefaultRand) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RngCore for DefaultRand

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 DefaultRand

type Seed = <Xoroshiro128StarStar as SeedableRng>::Seed

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

fn seed_from_u64(state: u64) -> Self

Create a new PRNG using a u64 seed.

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

Create a new PRNG using the given seed.

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

where R: RngCore,

Create a new PRNG seeded from another Rng.

impl Copy for DefaultRand

impl DeviceCopy for DefaultRand

impl Eq for DefaultRand

impl StructuralPartialEq for DefaultRand