MatProductReplaceMats#

Replace the input matrices for the matrix-matrix product operation inside the computed matrix

Synopsis#

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

Collective

Input Parameters#

  • A - the matrix or NULL if not being replaced

  • B - the matrix or NULL if not being replaced

  • C - the matrix or NULL if not being replaced

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

Note#

To reuse the symbolic phase, the input matrices must have exactly the same data structure as the replaced one. If the type of any of the input matrices is different than what was previously used, or their symmetry flag changed but the symbolic phase took advantage of their symmetry, the product is cleared and MatProductSetFromOptions() and MatProductSymbolic() are invoked again.

See Also#

Matrices, MatProduct, Mat, MatProductCreate(), MatProductSetFromOptions(), MatProductSymbolic(). MatProductClear()

Level#

intermediate

Location#

src/mat/interface/matproduct.c

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Index of all Mat routines
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Index of all manual pages