Struct rand_simple::HalfNormal

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

半正規分布

使用例

let mut half_normal = rand_simple::HalfNormal::new(1192u32, 765u32);
println!("分散 σ^2 = 1 の標準半正規分布乱数を生成する -> {}", half_normal.sample());
 
// 確率変数のパラメータを変更する場合
let variance: f64 = 2f64;
let result: Result<f64, &str> = half_normal.try_set_params(variance);
println!("分散 σ^2 = {} の半正規分布乱数を生成する -> {}", variance, half_normal.sample());

Implementations§

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impl HalfNormal

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pub fn new(_seed_1: u32, _seed_2: u32) -> Self

コンストラクタ

  • _seed_1 - 乱数の種
  • _seed_2 - 乱数の種。_seed_1と同じ値の場合、コンストラクタ側で変更する。
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pub fn sample(&mut self) -> f64

標準半正規分布に従う乱数を返す

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

確率変数のパラメータを変更する

  • variance - 分散

Trait Implementations§

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impl Display for HalfNormal

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

println!マクロなどで表示するためのフォーマッタ

  • 構造体の型
  • 分散

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.