Struct Beta 

pub struct Beta { /* private fields */ }

Beta Distribution

Example

// Create a new Beta distribution with specified random seeds
let mut beta = rand_simple::Beta::new([1192u32, 765u32, 1543u32, 2003u32, 1867u32, 1688u32]);
// Check the initial state
assert_eq!(format!("{beta}"), "Beta(Shape parameter α, Shape parameter β) = Beta(1, 1)");
// Generate a random number
println!("Returns a random number -> {}", beta.sample());

// Change the parameters of the probability variable
let shape_alpha: f64 = 2f64;
let shape_beta: f64 = 1.5f64;
let result: Result<(f64, f64), &str> = beta.try_set_params(shape_alpha, shape_beta);
// Check the updated state
assert_eq!(format!("{beta}"), "Beta(Shape parameter α, Shape parameter β) = Beta(2, 1.5)");
// Generate another random number
println!("Returns a random number -> {}", beta.sample());

Implementations

impl Beta

pub fn new(seeds: [u32; 6]) -> Self

• seeds - Random seeds. Adjusted within the constructor to ensure uniqueness.

pub fn sample(&mut self) -> f64

Returns a random number following the Beta distribution

pub fn try_set_params( &mut self, shape_alpha: f64, shape_beta: f64, ) -> Result<(f64, f64), &str>

Updates the parameters of the probability variable

• shape_alpha - Shape parameter α
• shape_beta - Shape parameter β

Trait Implementations

impl Display for Beta

Formatter for displaying Beta distribution using macros like println!

• Struct type
• Shape parameter α
• Shape parameter β

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

Formats the value using the given formatter.