DMStagGetCorners#

return global element indices of the local region (excluding ghost points)

Synopsis#

#include "petscdmstag.h"   
#include "petscdmproduct.h"   
PetscErrorCode DMStagGetCorners(DM dm, PetscInt *x, PetscInt *y, PetscInt *z, PetscInt *m, PetscInt *n, PetscInt *p, PetscInt *nExtrax, PetscInt *nExtray, PetscInt *nExtraz)

Not Collective

Input Parameter#

dm - the DMSTAG object

Output Parameters#

x - starting element index in first direction
y - starting element index in second direction
z - starting element index in third direction
m - element width in first direction
n - element width in second direction
p - element width in third direction
nExtrax - number of extra partial elements in first direction
nExtray - number of extra partial elements in second direction
nExtraz - number of extra partial elements in third direction

Notes#

Arguments corresponding to higher dimensions are ignored for 1D and 2D grids. These arguments may be set to NULL in this case.

The number of extra partial elements is either 1 or 0. The value is 1 on right, top, and front non-periodic domain (“physical”) boundaries, in the x, y, and z directions respectively, and otherwise 0.

Level#

beginner

Location#

src/dm/impls/stag/stagutils.c

Examples#

src/dm/impls/stag/tutorials/ex4.c
src/dm/impls/stag/tutorials/ex6.c
src/dm/impls/stag/tutorials/ex8.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex1.c
src/dm/impls/stag/tutorials/ex2.c

Index of all DMStag routines
Table of Contents for all manual pages
Index of all manual pages