pub unsafe extern "C" fn compute_diff(
map: *mut c_char,
cl: *mut comp_list_t,
n: c_ushort,
) -> *mut comp_list_tpub unsafe extern "C" fn compute_diff(
map: *mut c_char,
cl: *mut comp_list_t,
n: c_ushort,
) -> *mut comp_list_t