petsc-3.14.6 2021-03-30

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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