Struct metaheuristics_nature::utility::Rng

pub struct Rng { /* fields omitted */ }

An uniformed random number generator.

This generator doesn’t require mutability, because the state is saved as atomic values.

Implementations

impl Rng

pub fn new(seed: Option<u128>) -> Self

Create generator by a given seed. If none, create the seed from CPU random function.

pub fn seed(&self) -> u128

Seed of this generator.

pub fn rand(&self) -> f64

Generate a random values between 0..1 (exclusive).

pub fn maybe(&self, v: f64) -> bool

Generate a random boolean by positive (true) factor.

pub fn float(&self, rng: Range<f64>) -> f64

Generate a random floating point value by range.

pub fn int(&self, rng: Range<usize>) -> usize

Generate a random integer value by range.

pub fn vector(&self, v: &mut [usize], start: usize, rng: Range<usize>)

Generate (fill) a random vector.

The start position of the vector can be set.