DMPlexGetAdjacency#
Return all points adjacent to the given point
Synopsis#
#include "petscdmplex.h"
#include "petscdmlabel.h"
PetscErrorCode DMPlexGetAdjacency(DM dm, PetscInt p, PetscInt *adjSize, PetscInt *adj[])
Input Parameters#
dm - The
DMobjectp - The point
Input/Output Parameters#
adjSize - The maximum size of
adjif it is non-NULL, orPETSC_DETERMINE; on output the number of adjacent pointsadj - Either
NULLso that the array is allocated, or an existing array with sizeadjSize; on output contains the adjacent points
Notes#
The user must PetscFree() the adj array if it was not passed in.
See Also#
DMPLEX, DMSetAdjacency(), DMPlexDistribute(), DMCreateMatrix(), DMPlexPreallocateOperator()
Level#
advanced
Location#
Implementations#
DMPlexGetAdjacency_Internal() in src/dm/impls/plex/plexdistribute.c
Index of all DMPlex routines
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Index of all manual pages