Struct rand::distributions::Exp

pub struct Exp { /* fields omitted */ }

Deprecated since 0.7.0:

moved to rand_distr crate

The exponential distribution Exp(lambda).

This distribution has density function: f(x) = lambda * exp(-lambda * x) for x > 0.

Note that [Exp1][crate::distributions::Exp1] is an optimised implementation for lambda = 1.

Methods

impl Exp

pub fn new(lambda: f64) -> Exp

Construct a new Exp with the given shape parameter lambda. Panics if lambda <= 0.

Trait Implementations

impl Distribution<f64> for Exp

fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f64

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

Important traits for DistIter<D, R, T>

impl<D, R, T> Iterator for DistIter<D, R, T> where
    D: Distribution<T>,
    R: Rng,  type Item = T;

fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T> where
    R: Rng,
    Self: Sized, 

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

impl Clone for Exp

fn clone(&self) -> Exp

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Exp

impl Debug for Exp

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

Formats the value using the given formatter.