MatProductCreateWithMat

Set a given matrix to have its values computed via matrix-matrix operations on other matrices.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatProductCreateWithMat(Mat A, Mat B, Mat C, Mat D)

Collective

Input Parameters

• A - the first matrix

• B - the second matrix

• C - the third matrix (optional, use NULL if not needed)

• D - the matrix whose values are to be computed via a matrix-matrix product operation

Notes

Use MatProductCreate() if the matrix you wish computed D does not exist

See MatProductCreate() for details on the usage of the matrix-matrix product operations

Any product data currently attached to D will be freed

See Also

Matrices, MatProduct, Mat, MatProductType, MatProductSetType(), MatProductAlgorithm, MatProductSetAlgorithm, MatProductCreate(), MatProductClear()

Level

intermediate

Location

src/mat/interface/matproduct.c

Examples

src/mat/tests/ex109.c
src/mat/tests/ex195.c
src/mat/tests/ex237.c
src/mat/tests/ex69.c
src/mat/tests/ex70.c
src/ksp/ksp/tests/ex62f.F90
src/ksp/ksp/tests/ex90.c

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