MatFDColoringGetPerturbedColumns#
Returns the indices of the columns that that are currently being perturbed.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatFDColoringGetPerturbedColumns(MatFDColoring coloring, PetscInt *n, const PetscInt *cols[])
Not Collective
Input Parameter#
coloring - coloring context created with
MatFDColoringCreate()
Output Parameters#
n - the number of local columns being perturbed
cols - the column indices, in global numbering
Note#
IF the matrix type is MATBAIJ, then the block column indices are returned
Fortran Note#
PetscInt, pointer :: cols(:)
Use PETSC_NULL_INTEGER if n is not needed
See Also#
Mat, MatFDColoring, MatFDColoringCreate(), MatFDColoringDestroy(), MatFDColoringView(), MatFDColoringApply()
Level#
advanced
Location#
Index of all MatFD routines
Table of Contents for all manual pages
Index of all manual pages