/*D
   MPI_Graph_neighbors - Returns the neighbors of a node associated

Synopsis:
.vb
int MPI_Graph_neighbors(MPI_Comm comm, int rank, int maxneighbors,
                        int neighbors[])
.ve

Input Parameters:
+ comm - communicator with graph topology (handle)
. rank - rank of process in group of comm (integer)
- maxneighbors - size of array neighbors (integer)

Output Parameters:
. neighbors - ranks of processes that are neighbors to specified process (integer)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_COMM
.N MPI_ERR_RANK
.N MPI_ERR_OTHER

D*/

