PETSc version 3.16.5
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# DMPlexGetAdjacencyUser

get the user-defined adjacency callback

### Synopsis

    #include "petscdmplex.h"
    #include "petscdmlabel.h"
    PetscErrorCode DMPlexGetAdjacencyUser(DM dm, PetscErrorCode (**user)(DM,PetscInt,PetscInt*,PetscInt[],void*), void **ctx)

### Input Parameter

| dm | - The DM object

### Output Parameters

| user | - The user callback
| ctx | - context for callback evaluation

### See Also

DMSetAdjacency(), DMPlexDistribute(), DMPlexPreallocateOperator(), DMPlexGetAdjacency(), DMPlexSetAdjacencyUser()

### Level

advanced

### Location

src/dm/impls/plex/plexdistribute.c
Index of all DMPLEX routines
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