petsc-3.15.0 2021-03-30
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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
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages