Struct rand_simple::Exponential

pub struct Exponential { /* private fields */ }

Exponential Distribution

Example

let mut exponential = rand_simple::Exponential::new(1192_u32);
// Ensure that the distribution's representation includes the scale parameter
assert_eq!(format!("{exponential}"), "Exp(Scale parameter) = Exp(1)");
// Generate a random number following the Exponential distribution with the initial scale parameter
println!("Returns a random number -> {}", exponential.sample());

// Modify the distribution's scale parameter
let scale: f64 = 1.5_f64;
// Generate a random number following the modified Exponential distribution with scale parameter θ
let result: Result<f64, &str> = exponential.try_set_params(scale);
// Ensure that the distribution's representation includes the scale parameter
assert_eq!(format!("{exponential}"), "Exp(Scale parameter) = Exp(1.5)");
// Generate a random number following the Exponential distribution with the updated scale parameter
println!("Returns a random number -> {}", exponential.sample());

Implementations

impl Exponential

pub fn new(_seed: u32) -> Self

Constructor

• _seed - Random number seed

pub fn sample(&mut self) -> f64

Calculate random numbers.

pub fn try_set_params(&mut self, scale: f64) -> Result<f64, &'static str>

Modify the parameters of the probability variable.

• scale - Scale parameter

Trait Implementations

impl Display for Exponential

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formatter for displaying with macros like println!

• Scale parameter