[][src]Struct rand::distributions::Bernoulli

pub struct Bernoulli { /* fields omitted */ }

The Bernoulli distribution.

This is a special case of the Binomial distribution where n = 1.

Example

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

let d = Bernoulli::new(0.3).unwrap();
let v = d.sample(&mut rand::thread_rng());
println!("{} is from a Bernoulli distribution", v);

Precision

This Bernoulli distribution uses 64 bits from the RNG (a u64), so only probabilities that are multiples of 2-64 can be represented.

Methods

impl Bernoulli[src]

pub fn new(p: f64) -> Result<Bernoulli, BernoulliError>[src]

Construct a new Bernoulli with the given probability of success p.

Precision

For p = 1.0, the resulting distribution will always generate true. For p = 0.0, the resulting distribution will always generate false.

This method is accurate for any input p in the range [0, 1] which is a multiple of 2-64. (Note that not all multiples of 2-64 in [0, 1] can be represented as a f64.)

pub fn from_ratio(
    numerator: u32,
    denominator: u32
) -> Result<Bernoulli, BernoulliError>
[src]

Construct a new Bernoulli with the probability of success of numerator-in-denominator. I.e. new_ratio(2, 3) will return a Bernoulli with a 2-in-3 chance, or about 67%, of returning true.

If numerator == denominator then the returned Bernoulli will always return true. If numerator == 0 it will always return false.

Trait Implementations

impl Distribution<bool> for Bernoulli[src]

Important traits for DistIter<D, R, T>
fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T> where
    R: Rng,
    Self: Sized
[src]

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

impl Copy for Bernoulli[src]

impl Clone for Bernoulli[src]

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

Performs copy-assignment from source. Read more

impl Debug for Bernoulli[src]

Auto Trait Implementations

impl Send for Bernoulli

impl Unpin for Bernoulli

impl Sync for Bernoulli

impl UnwindSafe for Bernoulli

impl RefUnwindSafe for Bernoulli

Blanket Implementations

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

type Owned = T

The resulting type after obtaining ownership.

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

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

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.

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.

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

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

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

impl<T> FromCast<T> for T

impl<T, U> Cast<U> for T where
    U: FromCast<T>, 

impl<T, U> IntoBits<U> for T where
    U: FromBits<T>, 

impl<T> FromBits<T> for T

impl<V, T> VZip<V> for T where
    V: MultiLane<T>,