Struct DeterministicRng 

pub struct DeterministicRng { /* private fields */ }

Deterministic xorshift64 RNG.

Satisfies rand_core::RngCore + SeedableRng + Clone with no alloc. Used in STARK/ZKP as the R type parameter for MerkleTreeHidingMmcs and HidingFriPcs.

Implementations

impl DeterministicRng

pub fn seed_from_u64(seed: u64) -> Self

Create from a u64 seed (mirrors SmallRng::seed_from_u64).

Trait Implementations

impl Clone for DeterministicRng

fn clone(&self) -> DeterministicRng

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeterministicRng

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

Formats the value using the given formatter.

impl SeedableRng for DeterministicRng

type Seed = [u8; 8]

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

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

Create a new PRNG using the given seed.

fn seed_from_u64(state: u64) -> Self

Create a new PRNG using a u64 seed.

fn from_rng<R>(rng: &mut R) -> Self

where R: Rng + ?Sized,

Create a new PRNG seeded from an infallible Rng.

fn try_from_rng<R>(rng: &mut R) -> Result<Self, <R as TryRng>::Error>

where R: TryRng + ?Sized,

Create a new PRNG seeded from a potentially fallible Rng.

fn fork(&mut self) -> Self

where Self: Rng,

Fork this PRNG

fn try_fork(&mut self) -> Result<Self, Self::Error>

where Self: TryRng,

Fork this PRNG

impl TryRng for DeterministicRng

type Error = Infallible

The type returned in the event of a RNG error.

fn try_next_u32(&mut self) -> Result<u32, Self::Error>

Return the next random u32.

fn try_next_u64(&mut self) -> Result<u64, Self::Error>

Return the next random u64.

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

Fill dst entirely with random data.

impl Copy for DeterministicRng