/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2003 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpi.h"

#include <stdio.h>

#include "mpitest.h"

/*

static char MTEST_Descrip[] = "Test of Win_get_group";

*/

int main(int argc, char *argv[])

{

    int errs = 0;

    int result;

    int buf[10];

    MPI_Win win;

    MPI_Group group, wingroup;

    int minsize = 2;

    MPI_Comm comm;

    MTest_Init(&argc, &argv);

    /* The following illustrates the use of the routines to

     * run through a selection of communicators and datatypes.

     * Use subsets of these for tests that do not involve combinations

     * of communicators, datatypes, and counts of datatypes */

    while (MTestGetIntracommGeneral(&comm, minsize, 1)) {

        if (comm == MPI_COMM_NULL)

            continue;

        MPI_Win_create(buf, sizeof(int) * 10, sizeof(int), MPI_INFO_NULL, comm, &win);

        MPI_Win_get_group(win, &wingroup);

        MPI_Comm_group(comm, &group);

        MPI_Group_compare(group, wingroup, &result);

        if (result != MPI_IDENT) {

            errs++;

            fprintf(stderr, "Group returned by Win_get_group not the same as the input group\n");

        }

        MPI_Group_free(&wingroup);

        MPI_Group_free(&group);

        MPI_Win_free(&win);

        MTestFreeComm(&comm);

    }

    MTest_Finalize(errs);

    MPI_Finalize();

    return 0;

}