openmpi/src/mpi/c/group_f2c.c

/*
 * $HEADERS$
 */

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

#if LAM_HAVE_WEAK_SYMBOLS && LAM_PROFILING_DEFINES
#pragma weak MPI_Group_f2c = PMPI_Group_f2c
#endif


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

    group_index = (size_t) group_f;

    /* error checks */
    if (MPI_PARAM_CHECK) {
        if (0 > group_index) {
            return LAM_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
                        "MPI_Group_f2c");
            return MPI_GROUP_NULL;
        }
        if (group_index >= lam_group_f_to_c_table->size) {
            return LAM_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_GROUP,
                        "MPI_Group_f2c - II");
            return MPI_GROUP_NULL;
        }
    }

    group_c = lam_group_f_to_c_table->addr[group_index];

    return (MPI_Group) group_c;
}