Struct RandomState 

pub struct RandomState { /* private fields */ }

Legacy MT19937 with NumPy’s integer-seed initialization and draw order.

Implementations

impl RandomState

pub fn new(seed: u32) -> Self

RandomState(seed) for an integer in 0..=2**32-1.

pub fn next_u32(&mut self) -> u32

One tempered 32-bit MT19937 output (also the full-width uint32 randint).

pub fn random_sample(&mut self) -> f64

A 53-bit double in [0, 1), consuming two 32-bit outputs.

pub fn uniform(&mut self, low: f64, high: f64) -> Result<f64, DspError>

Scalar NumPy uniform(low, high), including a draw when low == high. Bounds must be finite and ordered, with a finite difference.

pub fn randint(&mut self, high: usize) -> Result<usize, DspError>

NumPy’s legacy randint(high) for the nonnegative index domain used by DE. Unlike modern Generator integers this uses masked rejection, not Lemire. high == 1 returns zero without advancing the generator.

pub fn shuffle<T>(&mut self, values: &mut [T])

In-place legacy shuffle of a one-dimensional sequence, last index first.

pub fn permutation(&mut self, n: usize) -> Vec<usize>

NumPy permutation(range(n)) (the same stream as permutation(n)).

Trait Implementations

impl Clone for RandomState

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RandomState

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

Formats the value using the given formatter.