petsc-3.14.6 2021-03-30
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MatFindOffBlockDiagonalEntries
Finds all the rows of a matrix that have entries outside of the main diagonal block (defined by the matrix block size)
Synopsis
#include "petscmat.h"
PetscErrorCode
MatFindOffBlockDiagonalEntries
(
Mat
mat,
IS
*is)
Collective on
Mat
Input Parameter
mat
- the matrix
Output Parameter
is
- contains the list of rows with off block diagonal entries
See Also
MatMultTranspose
(),
MatMultAdd
(),
MatMultTransposeAdd
()
Level
developer
Location
src/mat/interface/matrix.c
Implementations
MatFindOffBlockDiagonalEntries_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatFindOffBlockDiagonalEntries_SeqAIJ in src/mat/impls/aij/seq/aij.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages