Struct Rng 

pub struct Rng { /* private fields */ }

Deterministic, seedable RNG shared by all fcmaes optimizers.

Implementations

impl Rng

pub fn new(seed: u64) -> Self

Seed from a single 64-bit value (convenience for seed/runid pairs).

pub fn from_state_stream(state: u128, stream: u128) -> Self

Seed from a full 128-bit state + stream selector.

pub fn uniform01(&mut self) -> f64

Draw a uniform value in [0, 1).

pub fn next_u64(&mut self) -> u64

Draw a full-width seed for an independent child operation.

pub fn gaussian(&mut self) -> f64

Standard normal sample N(0, 1).

pub fn normreal(&mut self, mu: f64, sdev: f64) -> f64

Draw a normal value with mean mu and standard deviation sdev.

pub fn int_below(&mut self, max: i64) -> i64

Draw an integer in [0, max) by scaling a uniform value.

Returns zero when max <= 0.

pub fn uniform_vec(&mut self, dim: usize) -> Vec<f64>

Vector of dim uniform [0, 1) samples.

pub fn normal_vec(&mut self, dim: usize) -> Vec<f64>

Vector of dim standard-normal samples.

Trait Implementations

impl Clone for Rng

fn clone(&self) -> Rng

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Rng

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

Formats the value using the given formatter.