DMStagMatGetValuesStencil#
retrieve local matrix entries using grid indexing
Synopsis#
#include "petscdmstag.h"
PetscErrorCode DMStagMatGetValuesStencil(DM dm, Mat mat, PetscInt nRow, const DMStagStencil *posRow, PetscInt nCol, const DMStagStencil *posCol, PetscScalar *val)
Not Collective
Input Parameters#
dm - the
DMSTAGobjectmat - the matrix
nRow - number of rows
posRow - grid locations (including components) of rows
nCol - number of columns
posCol - grid locations (including components) of columns
Output Parameter#
val - logically two-dimensional array of values
See Also#
DMSTAG: Staggered, Structured Grid, DMSTAG, DMStagStencil, DMStagStencilLocation, DMStagVecGetValuesStencil(), DMStagVecSetValuesStencil(), DMStagMatSetValuesStencil(), MatSetValuesStencil(), MatAssemblyBegin(), MatAssemblyEnd(), DMCreateMatrix()
Level#
advanced
Location#
src/dm/impls/stag/stagstencil.c
Index of all DMStag routines
Table of Contents for all manual pages
Index of all manual pages