petsc-3.10.5 2019-03-28
MatComputeExplicitOperatorTranspose
Computes the explicit matrix representation of a give matrix that can apply MatMultTranspose()
Synopsis
#include "petscmat.h"
PetscErrorCode MatComputeExplicitOperatorTranspose(Mat inmat,Mat *mat)
Collective on Mat
Input Parameter
inmat -the matrix
Output Parameter
mat -the explict operator transposed
Notes
This computation is done by applying the transpose of the operator to columns of the
identity matrix.
Currently, this routine uses a dense matrix format when 1 processor
is used and a sparse format otherwise. This routine is costly in general,
and is recommended for use only with relatively small systems.
Keywords
Mat, compute, explicit, operator
Level
advanced
Location
src/mat/utils/axpy.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages