petsc-3.9.0 2018-04-07
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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