# rand::distributions::exponential::Exp - Rust
API documentation for the Rust `Exp` struct in crate `rand`.
Keywords: rust, rustlang, rust-lang, Exp

# Struct rand::distributions::exponential::Exp [−] [src]

    pub struct Exp { /* fields omitted */ }

The exponential distribution `Exp(lambda)`.

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

# Example

    use 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`
[src]

#### `pub fn new(lambda: f64) -> Exp`
[src]

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

## Trait Implementations

### `impl Clone for Exp`
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#### `fn clone(&self) -> Exp`
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Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`
1.0.0
[src]

Performs copy-assignment from `source`. Read more

### `impl Copy for Exp`
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### `impl Debug for Exp`
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#### `fn fmt(&self, __arg_0: &mut Formatter) -> Result`
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Formats the value using the given formatter. Read more

### `impl Sample<f64> for Exp`
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#### `fn sample<R: Rng>(&mut self, rng: &mut R) -> f64`
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Generate a random value of `Support`, using `rng` as the source of randomness. Read more

### `impl IndependentSample<f64> for Exp`
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#### `fn ind_sample<R: Rng>(&self, rng: &mut R) -> f64`
[src]

Generate a random value.

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