`pub struct Exp<F>{ /* private fields */ }`

## Expand description

The exponential distribution `Exp(λ)`

.

The exponential distribution is a continuous probability distribution
with rate parameter `λ`

(`lambda`

). It describes the time between events
in a `Poisson`

process, i.e. a process in which
events occur continuously and independently at a constant average rate.

See `Exp1`

for an optimised implementation for `λ = 1`

.

## §Density function

`f(x) = λ * exp(-λ * x)`

for `x > 0`

, when `λ > 0`

.

For `λ = 0`

, all samples yield infinity (because a Poisson process
with rate 0 has no events).

## §Plot

The following plot illustrates the exponential distribution with
various values of `λ`

.
The `λ`

parameter controls the rate of decay as `x`

approaches infinity,
and the mean of the distribution is `1/λ`

.

## §Example

```
use rand_distr::{Exp, Distribution};
let exp = Exp::new(2.0).unwrap();
let v = exp.sample(&mut rand::rng());
println!("{} is from a Exp(2) distribution", v);
```

## Implementations§

## Trait Implementations§

Source§### impl<'de, F> Deserialize<'de> for Exp<F>

### impl<'de, F> Deserialize<'de> for Exp<F>

Source§#### fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,

#### fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

Source§### impl<F> Distribution<F> for Exp<F>

### impl<F> Distribution<F> for Exp<F>

### impl<F> Copy for Exp<F>

### impl<F> StructuralPartialEq for Exp<F>

## Auto Trait Implementations§

### impl<F> Freeze for Exp<F>where
F: Freeze,

### impl<F> RefUnwindSafe for Exp<F>where
F: RefUnwindSafe,

### impl<F> Send for Exp<F>where
F: Send,

### impl<F> Sync for Exp<F>where
F: Sync,

### impl<F> Unpin for Exp<F>where
F: Unpin,

### impl<F> UnwindSafe for Exp<F>where
F: UnwindSafe,

## Blanket Implementations§

Source§### impl<T> BorrowMut<T> for Twhere
T: ?Sized,

### impl<T> BorrowMut<T> for Twhere
T: ?Sized,

Source§#### fn borrow_mut(&mut self) -> &mut T

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source§### impl<T> CloneToUninit for Twhere
T: Clone,

### impl<T> CloneToUninit for Twhere
T: Clone,

Source§#### unsafe fn clone_to_uninit(&self, dst: *mut T)

#### unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (

`clone_to_uninit`

)