DMStagStencilToIndexLocal

Convert an array of DMStagStencil objects to an array of indices into a local vector.

Synopsis

#include "petscdmstag.h"   
PetscErrorCode DMStagStencilToIndexLocal(DM dm, PetscInt dim, PetscInt n, const DMStagStencil *pos, PetscInt *ix)

Not Collective

Input Parameters

• dm - the DMSTAG object

• dim - the dimension of the DMSTAG object

• n - the number of DMStagStencil objects

• pos - an array of n DMStagStencil objects

Output Parameter

• ix - output array of n indices

Notes

The DMStagStencil objects in pos use global element indices.

The .c fields in pos must always be set (even if to 0).

Developer Notes

This is a “hot” function, and accepts the dimension redundantly to avoid having to perform any error checking inside the function.

See Also

DMSTAG: Staggered, Structured Grid, DMSTAG, DMStagStencilLocation, DMStagStencil, DMGetLocalVector, DMCreateLocalVector

Level

developer

Location

src/dm/impls/stag/stagstencil.c

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Index of all DMStag routines
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