Struct Open01 

pub struct Open01;

A distribution to sample floating point numbers uniformly in the open interval (0, 1), i.e. not including either endpoint.

All values that can be generated are of the form n * ε + ε/2. For f32 the 23 most significant random bits of an u32 are used, for f64 52 from an u64. The conversion uses a transmute-based method.

See also: StandardUniform which samples from [0, 1), OpenClosed01 which samples from (0, 1] and Uniform which samples from arbitrary ranges.

Example

use rand::Rng;
use rand::distr::Open01;

let val: f32 = rand::rng().sample(Open01);
println!("f32 from (0, 1): {}", val);

Trait Implementations

impl Clone for Open01

fn clone(&self) -> Open01

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Open01

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

Formats the value using the given formatter.

impl Default for Open01

fn default() -> Open01

Returns the “default value” for a type.

impl Distribution<f32> for Open01

fn sample<R>(&self, rng: &mut R) -> f32

where R: Rng + ?Sized,

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> Iter<Self, R, T>

where R: Rng, Self: Sized,

Create an iterator that generates random values of T, using rng as the source of randomness.

fn map<F, S>(self, func: F) -> Map<Self, F, T, S>

where F: Fn(T) -> S, Self: Sized,

Map sampled values to type S

impl Distribution<f64> for Open01

fn sample<R>(&self, rng: &mut R) -> f64

where R: Rng + ?Sized,

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> Iter<Self, R, T>

where R: Rng, Self: Sized,

Create an iterator that generates random values of T, using rng as the source of randomness.

fn map<F, S>(self, func: F) -> Map<Self, F, T, S>

where F: Fn(T) -> S, Self: Sized,

Map sampled values to type S

impl Copy for Open01