Struct TwiddleFreeButterfly

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pub struct TwiddleFreeButterfly;

Expand description

Butterfly with no twiddle factor (twiddle = 1).

This is used when no root-of-unity scaling is needed. It works for either DIT or DIF, and is often used at the final or base level of a transform tree.

This butterfly computes:

  - output_1 = x1 + x2
  - output_2 = x1 - x2

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impl<F: Field> Butterfly<F> for TwiddleFreeButterfly

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fn apply<PF: PackedField<Scalar = F>>(&self, x_1: PF, x_2: PF) -> (PF, PF)

Applies the butterfly transformation to two packed field values. Read more

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fn apply_in_place<PF: PackedField<Scalar = F>>( &self, x_1: &mut PF, x_2: &mut PF, )

Applies the butterfly in-place to two packed values. Read more

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fn apply_to_rows(&self, row_1: &mut [F], row_2: &mut [F])

Applies the butterfly transformation to two rows of scalar field values. Read more

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fn apply_to_rows_oop( &self, src_1: &[F], dst_1: &mut [MaybeUninit<F>], src_2: &[F], dst_2: &mut [MaybeUninit<F>], )

Applies the butterfly out-of-place to two source rows. Read more

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impl Clone for TwiddleFreeButterfly

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fn clone(&self) -> TwiddleFreeButterfly

Returns a duplicate of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Copy for TwiddleFreeButterfly

Auto Trait Implementations§

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impl UnwindSafe for TwiddleFreeButterfly

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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