Struct std::rand::distributions::ExpUnstable

pub struct Exp {
    // some fields omitted
}

The exponential distribution Exp(lambda).

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

Example

fn main() { use std::rand; use std::rand::distributions::{Exp, IndependentSample}; let exp = Exp::new(2.0); let v = exp.ind_sample(&mut rand::thread_rng()); println!("{} is from a Exp(2) distribution", v); }

use std::rand;
use std::rand::distributions::{Exp, IndependentSample};

let exp = Exp::new(2.0);
let v = exp.ind_sample(&mut rand::thread_rng());
println!("{} is from a Exp(2) distribution", v);

Methods

impl Exp

fn new(lambda: f64) -> Exp

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

Trait Implementations

impl Sample<f64> for Exp

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

impl IndependentSample<f64> for Exp

fn ind_sample<R>(&self, rng: &mut R) -> f64 where R: Rng

Derived Implementations

impl Copy for Exp