petsc-3.13.6 2020-09-29
MatFindNonzeroRows
Locate all rows that are not completely zero in the matrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatFindNonzeroRows(Mat mat,IS *keptrows)
Input Parameter
A -the matrix
Output Parameter
keptrows -the rows that are not completely zero
Notes
keptrows is set to NULL if all rows are nonzero.
Level
intermediate
Location
src/mat/interface/matrix.c
Implementations
MatFindNonzeroRows_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatFindNonzeroRows_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