Struct TopN

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pub struct TopN(pub usize);

Expand description

Retain only the n terms with largest coefficient magnitude. Implemented as a finalize_layer partial sort (no per-term filter).

§Examples

use paulistrings::truncation::TopN;
let policy = TopN(1_000_000);

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§0: usize

Number of terms to retain. Terms outside the top-n by magnitude are dropped at layer finalization.

Trait Implementations§

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impl<const W: usize> TruncationPolicy<W> for TopN

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fn finalize_layer(&self, sum: &mut PauliSum<W>)

Optional global pass after each circuit layer. May be non-local (e.g. partial sort for TopN).

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fn keep_term(&self, _x: &[u64; W], _z: &[u64; W], _c: Complex64) -> bool

Cheap per-term filter applied during the merge phase. Must inline. Read more

Auto Trait Implementations§

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impl UnwindSafe for TopN

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 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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