Struct NTT

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pub struct NTT<const P: u32, const PRIM_ROOT: u32> { /* private fields */ }
Expand description

素数$P$上の数論変換 (Number Theoretic Transform)

PRIM_ROOTPの原始根。

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impl<const P: u32, const PRIM_ROOT: u32> NTT<P, PRIM_ROOT>

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pub fn new() -> Self

NTT<P, PRIM_ROOT>を作る。

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pub fn ntt(&self, f: &mut Vec<ConstModInt<P>>)

数論変換を行う。

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pub fn intt(&self, f: &mut Vec<ConstModInt<P>>)

nttの逆変換を行う。

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pub fn convolve( &self, f: Vec<ConstModInt<P>>, g: Vec<ConstModInt<P>>, ) -> Vec<ConstModInt<P>>

2つのVecを畳み込む。

$(f \ast g)(k) = \sum_{k = i + j} f(i) \times g(j)$

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pub fn convolve_same(&self, f: Vec<ConstModInt<P>>) -> Vec<ConstModInt<P>>

convolve(f.clone(), f)と同等。

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pub fn max_size(&self) -> usize

NTTで変換可能な配列の最大長を返す。

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impl<const P: u32, const PRIM_ROOT: u32> Default for NTT<P, PRIM_ROOT>

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<const P: u32, const PRIM_ROOT: u32> Freeze for NTT<P, PRIM_ROOT>

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impl<const P: u32, const PRIM_ROOT: u32> RefUnwindSafe for NTT<P, PRIM_ROOT>

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impl<const P: u32, const PRIM_ROOT: u32> Send for NTT<P, PRIM_ROOT>

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impl<const P: u32, const PRIM_ROOT: u32> Sync for NTT<P, PRIM_ROOT>

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impl<const P: u32, const PRIM_ROOT: u32> Unpin for NTT<P, PRIM_ROOT>

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impl<const P: u32, const PRIM_ROOT: u32> UnwindSafe for NTT<P, PRIM_ROOT>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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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 T
where 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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impl<T, U> TryFrom<U> for T
where 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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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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

Performs the conversion.