DMStagStencil#
data structure representing a degree of freedom on a DMSTAG grid
Synopsis#
typedef struct {
DMStagStencilLocation loc;
PetscInt i, j, k, c;
} DMStagStencil;
Data structure (C struct), analogous to describing a degree of freedom associated with a DMSTAG object,
in terms of a global element index in each of up to three directions, a “location” as defined by DMStagStencilLocation,
and a component number. Primarily for use with DMStagMatSetValuesStencil() (compare with use of MatStencil with MatSetValuesStencil()).
Notes#
The component (c) field must always be set, even if there is a single component at a given location (in which case c should be set to 0).
This is a struct, not a PetscObject.
See Also#
DMSTAG: Staggered, Structured Grid, DMSTAG, DMDA, DMStagMatSetValuesStencil(), DMStagVecSetValuesStencil(), DMStagStencilLocation, DMStagSetStencilWidth(),
DMStagSetStencilType(), DMStagVecGetValuesStencil(), DMStagStencilLocation
Level#
beginner
Location#
Examples#
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex1.c
src/dm/impls/stag/tutorials/ex8.c
src/dm/impls/stag/tutorials/ex2.c
src/dm/impls/stag/tutorials/ex6.c
src/dm/impls/stag/tutorials/ex4.c
Index of all DMStag routines
Table of Contents for all manual pages
Index of all manual pages