# [−][src]Struct rand::distributions::Normal

    pub struct Normal { /* fields omitted */ }

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

This uses the ZIGNOR variant of the Ziggurat method, see `StandardNormal` for more details.

Note that `StandardNormal` is an optimised implementation for mean 0, and standard deviation 1.

# Example

    use rand::distributions::{Normal, Distribution};

    // mean 2, standard deviation 3
    let normal = Normal::new(2.0, 3.0);
    let v = normal.sample(&mut rand::thread_rng());
    println!("{} is from a N(2, 9) distribution", v)

## Methods

### `impl Normal`[src]

#### `pub fn new(mean: f64, std_dev: f64) -> Normal`[src]

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

# Panics

Panics if `std_dev < 0`.

## Trait Implementations

### `impl Distribution<f64> for Normal`[src]

#### `fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f64`[src]

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

####
ⓘImportant traits for DistIter<'a, D, R, T>

### Important traits for DistIter<'a, D, R, T>

`impl<'a, D, R, T> Iterator for DistIter<'a, D, R, T> where
D: Distribution<T>,
R: Rng + 'a, type Item = T;`
`fn sample_iter<'a, R>(&'a self, rng: &'a mut R) -> DistIter<'a, Self, R, T> where
Self: Sized,
R: Rng,` [src]

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

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

#### `fn clone(&self) -> Normal`[src]

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 Normal`[src]

### `impl Debug for Normal`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl Send for Normal`

### `impl Unpin for Normal`

### `impl Sync for Normal`

### `impl UnwindSafe for Normal`

### `impl RefUnwindSafe for Normal`

## Blanket Implementations

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into`)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

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