PCComputeOperator#

Computes the explicit preconditioned operator.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCComputeOperator(PC pc, MatType mattype, Mat *mat)

Collective

Input Parameters#

pc - the preconditioner object
mattype - the matrix type to be used for the operator

Output Parameter#

mat - the explicit preconditioned operator

Note#

This computation is done by applying the operators 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 when mattype == NULL

Level#

advanced

Location#

src/ksp/pc/interface/precon.c

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Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages