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 DM object

• p - The point

Input/Output Parameters

• adjSize - The maximum size of adj if it is non-NULL, or PETSC_DETERMINE; on output the number of adjacent points

• adj - Either NULL so that the array is allocated, or an existing array with size adjSize; 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

src/dm/impls/plex/plexdistribute.c

Implementations

DMPlexGetAdjacency_Internal() in src/dm/impls/plex/plexdistribute.c

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