Struct rand::distributions::Exp1
source · [−]pub struct Exp1;
moved to rand_distr crate
Expand description
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.
Jurgen A. Doornik (2005). An Improved Ziggurat Method to Generate Normal Random Samples. Nuffield College, Oxford ↩
Trait Implementations
sourceimpl Distribution<f64> for Exp1
impl Distribution<f64> for Exp1
sourcefn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f64
fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f64
Generate a random value of T
, using rng
as the source of randomness.
sourcefn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>ⓘNotable traits for DistIter<D, R, T>impl<D, R, T> Iterator for DistIter<D, R, T> where
D: Distribution<T>,
R: Rng, type Item = T;
where
R: Rng,
Self: Sized,
fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>ⓘNotable traits for DistIter<D, R, T>impl<D, R, T> Iterator for DistIter<D, R, T> where
D: Distribution<T>,
R: Rng, type Item = T;
where
R: Rng,
Self: Sized,
D: Distribution<T>,
R: Rng, type Item = T;
Create an iterator that generates random values of T
, using rng
as
the source of randomness. Read more
impl Copy for Exp1
Auto Trait Implementations
impl RefUnwindSafe for Exp1
impl Send for Exp1
impl Sync for Exp1
impl Unpin for Exp1
impl UnwindSafe for Exp1
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more