pub unsafe extern "C" fn n_polyun_stack_request(
S: *mut n_polyun_stack_struct,
k: slong,
) -> *mut *mut n_polyun_structpub unsafe extern "C" fn n_polyun_stack_request(
S: *mut n_polyun_stack_struct,
k: slong,
) -> *mut *mut n_polyun_struct