Struct rand_simple::Laplace

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pub struct Laplace { /* private fields */ }
Expand description

ラプラス分布を計算する構造体

使用例 1 (new関数)

use rand_simple::Laplace;
let laplace = Laplace::new(1192u32);
let next = laplace.sample(); // 位置母数 μ = 0, 尺度母数 θ = 1の標準ラプラス分布
println!("乱数: {}", next); // -0.824946373682539f64

使用例 2 (マクロ・引数有り)

use rand_simple::create_laplace;
let laplace = create_laplace!(1192u32);
let next = laplace.sample(); // 位置母数 μ = 0, 尺度母数 θ = 1の標準ラプラス分布
println!("乱数: {}", next); // -0.824946373682539f64

使用例 3 (マクロ・引数無し)

use rand_simple::create_laplace;
let laplace = create_laplace!();
let next = laplace.sample(); // 位置母数 μ = 0, 尺度母数 θ = 1の標準ラプラス分布
println!("乱数: {}", next); // 値不明

Implementations§

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impl Laplace

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pub fn new(_seed: u32) -> Self

コンストラクタ

  • _seed - 乱数の種
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pub fn sample(&self) -> f64

標準ラプラス分布に従う乱数を返す

  • 位置母数 0
  • 尺度母数 1

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