MatComputeOperator#
Computes the explicit matrix
Synopsis#
#include "petscmat.h"
PetscErrorCode MatComputeOperator(Mat inmat, MatType mattype, Mat *mat)
Collective
Input Parameters#
inmat - the matrix
mattype - the matrix type for the explicit operator
Output Parameter#
mat - the explicit operator
Note#
This computation is done by applying the operator to columns of the identity matrix.
This routine is costly in general, and is recommended for use only with relatively small systems.
Currently, this routine uses a dense matrix format if mattype == NULL.
See Also#
Matrices, Mat, MatConvert(), MatMult(), MatComputeOperatorTranspose()
Level#
advanced
Location#
Examples#
src/ksp/ksp/tutorials/ex4.c
src/ksp/ksp/tutorials/ex21.c
src/ksp/ksp/tutorials/ex34.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages