petsc-3.13.6 2020-09-29
MatFindZeroDiagonals
Finds all the rows of a matrix that have zero or no diagonal entry in the matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatFindZeroDiagonals(Mat mat,IS *is)
Collective on Mat
Input Parameter
mat -the matrix
Output Parameter
is -if any rows have zero diagonals this contains the list of them
See Also
MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level
developer
Location
src/mat/interface/matrix.c
Implementations
MatFindZeroDiagonals_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatFindZeroDiagonals_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