# Struct rand::isaac::IsaacRng [−] [src]

    pub struct IsaacRng {
        // some fields omitted
    }

A random number generator that uses the ISAAC algorithm[1].

The ISAAC algorithm is generally accepted as suitable for cryptographic purposes, but this implementation has not be verified as such. Prefer a generator like `OsRng` that defers to the operating system for cases that need high security.

[1]: Bob Jenkins, ISAAC: A fast cryptographic random number generator

## Methods

### `impl IsaacRng`

#### `fn new_unseeded() -> IsaacRng`

Create an ISAAC random number generator using the default fixed seed.

## Trait Implementations

### `impl Clone for IsaacRng`

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

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

### `impl Rng for IsaacRng`

#### `fn next_u32(&mut self) -> u32`

#### `fn next_u64(&mut self) -> u64`

#### `fn next_f32(&mut self) -> f32`

#### `fn next_f64(&mut self) -> f64`

#### `fn fill_bytes(&mut self, dest: &mut [u8])`

#### `fn gen<T: Rand>(&mut self) -> T where Self: Sized`

#### `fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where Self: Sized`

#### `fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where Self: Sized`

#### `fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized`

#### `fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized`

#### `fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where Self: Sized`

#### `fn shuffle<T>(&mut self, values: &mut [T]) where Self: Sized`

### `impl<'a> SeedableRng<&'a [u32]> for IsaacRng`

#### `fn reseed(&mut self, seed: &'a [u32])`

#### `fn from_seed(seed: &'a [u32]) -> IsaacRng`

Create an ISAAC random number generator with a seed. This can be any length, although the maximum number of elements used is 256 and any more will be silently ignored. A generator constructed with a given seed will generate the same sequence of values as all other generators constructed with that seed.

### `impl Rand for IsaacRng`

#### `fn rand<R: Rng>(other: &mut R) -> IsaacRng`

### Derived Implementations

### `impl Copy for IsaacRng`

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