nd

package

v0.1.0 Latest Latest Go to latest Published: Oct 20, 2026 License: BSD-3-Clause Imports: 3 Imported by: 0

Details

Package nd connects sparse matrices to go-ndarray arrays: dense vectors and matrices go in and out of the solvers as *ndarray.Array.

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func FromCSR(a *sparse.CSR[float64]) (*ndarray.Array, error)

FromCSR returns the dense 2-D array of a real CSR matrix.

func FromVector(v []float64) *ndarray.Array

FromVector copies a slice into a new 1-D array.

func MulMat(a *sparse.CSR[float64], b *ndarray.Array) (*ndarray.Array, error)

MulMat computes the sparse-times-dense product A B for a 2-D array B.

func MulVec(a *sparse.CSR[float64], x *ndarray.Array) (*ndarray.Array, error)

MulVec computes A x for a 1-D array x.

func ToCSR(a *ndarray.Array) (*sparse.CSR[float64], error)

ToCSR converts a 2-D float64 array to CSR, dropping zeros.

func Vector(a *ndarray.Array) ([]float64, error)

Vector copies a 1-D float64 array into a slice.

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