Function mpi::ffi::PMPI_T_enum_get_item

pub unsafe extern fn PMPI_T_enum_get_item(enumtype: MPI_T_enum,
                                          index: c_int,
                                          value: *mut c_int,
                                          name: *mut c_char,
                                          name_len: *mut c_int)
                                          -> c_int