/* This file created from f77/ext/c2fmult.c with f77tof90 */

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

/*

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

/*

  Check that MPI_xxxx_c2f, applied to the same object several times,

  yields the same handle.  We do this because when MPI handles in

  C are a different length than those in Fortran, care needs to

  be exercised to ensure that the mapping from one to another is unique.

  (Test added to test a potential problem in ROMIO for handling MPI_File

  on 64-bit systems)

*/

#include "mpi.h"

#include <stdio.h>

#include "mpitest.h"

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

{

    MPI_Fint handleA, handleB;

    int rc;

    int errs = 0;

    int buf[1];

    MPI_Request cRequest;

    MPI_Status st;

    int tFlag;

    MTest_Init(&argc, &argv);

    /* Request */

    rc = MPI_Irecv(buf, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, &cRequest);

    if (rc) {

        errs++;

        printf("Unable to create request\n");

    } else {

        handleA = MPI_Request_c2f(cRequest);

        handleB = MPI_Request_c2f(cRequest);

        if (handleA != handleB) {

            errs++;

            printf("MPI_Request_c2f does not give the same handle twice on the same MPI_Request\n");

        }

    }

    MPI_Cancel(&cRequest);

    MPI_Wait(&cRequest, &st);

    MPI_Test_cancelled(&st, &tFlag);

    if (!tFlag) {

        errs++;

        printf("Unable to cancel MPI_Irecv request\n");

    }

    /* Using MPI_Request_free should be ok, but some MPI implementations

     * object to it imediately after the cancel and that isn't essential to

     * this test */

    MTest_Finalize(errs);

    return MTestReturnValue(errs);

}