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

# Struct rand::distributions::normal::LogNormal [−] [src]

    pub struct LogNormal {
        // some fields omitted
    }

The log-normal distribution `ln N(mean, std_dev**2)`.

If `X` is log-normal distributed, then `ln(X)` is `N(mean, std_dev**2)` distributed.

# Example

    use rand::distributions::{LogNormal, IndependentSample};

    // mean 2, standard deviation 3
    let log_normal = LogNormal::new(2.0, 3.0);
    let v = log_normal.ind_sample(&mut rand::thread_rng());
    println!("{} is from an ln N(2, 9) distribution", v)

## Methods

### `impl LogNormal`
[src]

#### `fn new(mean: f64, std_dev: f64) -> LogNormal`

Construct a new `LogNormal` distribution with the given mean and standard deviation.

# Panics

Panics if `std_dev < 0`.

## Trait Implementations

### `impl Sample<f64> for LogNormal`
[src]

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

### `impl IndependentSample<f64> for LogNormal`
[src]

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

### Derived Implementations

### `impl Copy for LogNormal`
[src]

### `impl Clone for LogNormal`
[src]

#### `fn clone(&self) -> LogNormal`

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

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