openmpi/src/mpi/c/group_f2c.c

/*
 * $HEADERS$
 */

#include "ompi_config.h"
#include "mpi.h"
#include "mpi/c/bindings.h"
#include "group/group.h"
#include "errhandler/errhandler.h"
#include "communicator/communicator.h"

#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Group_f2c = PMPI_Group_f2c
#endif

#if OMPI_PROFILING_DEFINES
#include "mpi/c/profile/defines.h"
#endif

static const char FUNC_NAME[] = "MPI_Group_f2c";


MPI_Group MPI_Group_f2c(MPI_Fint group_f)
{
    /* local variables */
    ompi_group_t *group_c;
    size_t group_index;

    group_index = (size_t) group_f;

    if (MPI_PARAM_CHECK) {
        OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
    }

    /* Per MPI-2:4.12.4, do not invoke an error handler if we get an
       invalid fortran handle */

    if (group_index < 0 ||
        group_index >=
        ompi_pointer_array_get_size(ompi_group_f_to_c_table)) {
        return MPI_GROUP_NULL;
    }

    group_c = ompi_group_f_to_c_table->addr[group_index];
    return (MPI_Group) group_c;
}