Struct solana_evm_loader_program::scope::evm::secp256k1::rand::distributions::LogNormal

[+] Show declaration

pub struct LogNormal { /* fields omitted */ }

[−] Expand description

The log-normal distribution ln N(mean, std_dev**2).

If X is log-normal distributed, then ln(X) is N(mean, std_dev**2) distributed.

Example

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

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

Implementations

impl LogNormal[−]

pub fn new(mean: f64, std_dev: f64) -> LogNormal[−]

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

Panics

Panics if std_dev < 0.

Trait Implementations

impl Clone for LogNormal[+]

[+] Show hidden undocumented items

pub fn clone(&self) -> LogNormal[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for LogNormal

impl Debug for LogNormal[+]

[+] Show hidden undocumented items

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[−]

Formats the value using the given formatter.

impl Distribution<f64> for LogNormal[+]

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pub fn sample<R>(&self, rng: &mut R) -> f64 where
    R: Rng + ?Sized, [−]

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

pub fn sample_iter<R>(&'a self, rng: &'a mut R) -> DistIter<'a, Self, R, T> where
    R: Rng, [−]

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