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
Input Parameter#
mat - the matrix
Output Parameter#
is - contains the list of rows with off block diagonal entries
See Also#
Matrices, Mat, MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level#
developer
Location#
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