lazymatrix::MatVecInto

LazyMatrix for Rust · 0.8.1

Source

pub trait MatVecInto<X, Y = X>: MatrixShape + MatrixErrorType

Matrix–vector product out = A x, overwriting reusable output storage.

X and Y may differ so that backends can accept borrowed or strided inputs while writing into an owned output. Implementations must not depend on the previous values in out.

Errors

Returns the backend error if the product cannot be completed. After an error, out may be partially overwritten and must not be used as a product result.

Panics

Panics unless x has length ncols and out has length nrows.

Methods

matvec_into

fn matvec_into(
    &self,
    x: &X,
    out: &mut Y
) -> Result<(), <Self as MatrixErrorType>::Error>

Source

matvec_normalized_into

fn matvec_normalized_into<F: lazymatrix::Scalar>(
    &self,
    x: &X,
    centers: Option<&[F]>,
    scales: Option<&[F]>,
    out: &mut Y
) -> Result<(), <Self as MatrixErrorType>::Error> where X: Clone + lazymatrix::ElemDivAssign<F> + lazymatrix::DotSlice<F>, Y: lazymatrix::SubScalarAssign<F>

Source

Apply optional column normalization without materializing the matrix.

The default uses raw products and algebraic corrections. Backends may override this method to center entries before accumulation, which avoids cancellation when column offsets are large.

Implementation of MatVecInto

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impl<A, F, X, Y> MatVecInto<X, Y> for ZarrMatrix<A, F> where A: ZarrArray<F>, F: Scalar, X: VectorView<F>, Y: VectorViewMut<F>

Implementation of MatVecInto

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impl<M, F, X, Y> MatVecInto<X, Y> for WithIntercept<M, F> where F: Scalar, X: VectorOwned<F>, Y: VectorViewMut<F>, M: MatVecInto<<X as VectorOwned>::Owned, Y>

Implementation of MatVecInto

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impl<M, X, Y, F> MatVecInto<X, Y> for LazyMatrix<M, F> where F: Scalar, M: MatVecInto<X, Y>, X: Clone + ElemDivAssign<F> + DotSlice<F>, Y: SubScalarAssign<F>

Implementation of MatVecInto

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impl<M, X, Y, F> MatVecInto<X, Y> for Submatrix<'_, M, F> where M: SubmatrixKernel<F>, F: Scalar, X: VectorView<F>, Y: VectorViewMut<F>

Implementation of MatVecInto

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impl<M, X, Y, T> MatVecInto<X, Y> for EagerMatrix<M, T> where M: MatVecInto<X, Y>

Implementation of MatVecInto

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impl<M: MatVecInto<X, Y>, X, Y> MatVecInto<X, Y> for SprsCsc<M>

Implementation of MatVecInto

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impl<M: MatVecInto<X, Y>, X, Y> MatVecInto<X, Y> for SprsCsr<M>