Function mpi::ffi::OMPI_C_MPI_WIN_NULL_COPY_FN

pub unsafe extern fn OMPI_C_MPI_WIN_NULL_COPY_FN(window: MPI_Win,
                                                 win_keyval: c_int,
                                                 extra_state: *mut c_void,
                                                 attribute_val_in: *mut c_void,
                                                 attribute_val_out: *mut c_void,
                                                 flag: *mut c_int)
                                                 -> c_int