petsc-dev 2014-08-19
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DMPlexGetAdjacency

Return all points adjacent to the given point

Synopsis

#include "petscdmplex.h"   
PetscErrorCode DMPlexGetAdjacency(DM dm, PetscInt p, PetscInt *adjSize, PetscInt *adj[])

Input Parameters

dm - The DM object
p - The point
adjSize - The maximum size of adj if it is non-NULL, or PETSC_DETERMINE
adj - Either NULL so that the array is allocated, or an existing array with size adjSize

Output Parameters

adjSize - The number of adjacent points
adj - The adjacent points

Notes: The user must PetscFree the adj array if it was not passed in.

See Also

DMPlexSetAdjacencyUseCone(), DMPlexSetAdjacencyUseClosure(), DMPlexDistribute(), DMCreateMatrix(), DMPlexPreallocateOperator()

Level:advanced
Location:
src/dm/impls/plex/plexdistribute.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages