[−][src]Struct rand_distr::Exp1
Samples floating-point numbers according to the exponential distribution,
with rate parameter λ = 1
. This is equivalent to Exp::new(1.0)
or
sampling with -rng.gen::<f64>().ln()
, but faster.
See Exp
for the general exponential distribution.
Implemented via the ZIGNOR variant1 of the Ziggurat method. The exact description in the paper was adjusted to use tables for the exponential distribution rather than normal.
Example
use rand::prelude::*; use rand_distr::Exp1; let val: f64 = thread_rng().sample(Exp1); println!("{}", val);
Jurgen A. Doornik (2005). An Improved Ziggurat Method to Generate Normal Random Samples. Nuffield College, Oxford ↩
Trait Implementations
impl Clone for Exp1
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impl Copy for Exp1
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impl Debug for Exp1
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impl Distribution<f32> for Exp1
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pub fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f32
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pub fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>ⓘ where
R: Rng,
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R: Rng,
impl Distribution<f64> for Exp1
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Auto Trait Implementations
impl RefUnwindSafe for Exp1
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impl Send for Exp1
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impl Sync for Exp1
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impl Unpin for Exp1
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impl UnwindSafe for Exp1
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,