#include <mpi.h>

#include <stdio.h>

#include <stdlib.h>

#include "mpitest.h"

int main(int argc, char **argv)

{

    MPI_Group basegroup;

    MPI_Group g1;

    MPI_Comm comm, newcomm;

    int errs = 0, mpi_errno, rank, size;

    int i, errclass, nranks, *ranks;

    int worldrank;

    MTest_Init(&argc, &argv);

    MPI_Comm_rank(MPI_COMM_WORLD, &worldrank);

    comm = MPI_COMM_WORLD;

    MPI_Comm_group(comm, &basegroup);

    MPI_Comm_rank(comm, &rank;;

    MPI_Comm_size(comm, &size);

    MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_RETURN);

    MPI_Comm_split(comm, 0, size - rank, &newcomm);

    MPI_Comm_group(newcomm, &g1;;

    ranks = (int *) malloc(size * sizeof(int));

    for (i = 0; i < size; i++)

        ranks[i] = i;

    nranks = size;

    /*Checking group_ranslate_ranks for NULL variable */

    mpi_errno = MPI_Group_translate_ranks(g1, nranks, ranks, basegroup, NULL);

    MPI_Error_class(mpi_errno, &errclass);

    if (errclass != MPI_ERR_ARG)

        ++errs;

    MPI_Comm_free(&comm);

    MPI_Comm_free(&newcomm);

    MPI_Group_free(&basegroup);

    MPI_Group_free(&g1;;

    MTest_Finalize(errs);

    return 0;

}