fn diff(a: i128, b: i128) -> (u128, u128) {
match integer::i128_diff(a, b) {
Result::Ok(r) => (r, 0),
Result::Err(r) => (r, 1),
}
}
fn main() -> (
(u128, u128), (u128, u128),
(u128, u128), (u128, u128),
(u128, u128), (u128, u128),
(u128, u128), (u128, u128),
) {
(
diff(18, 1),
diff(1, 18),
diff(0, 170141183460469231731687303715884105727),
diff(170141183460469231731687303715884105727, 0),
diff(-18, 1),
diff(1, -18),
diff(0, -170141183460469231731687303715884105727),
diff(-170141183460469231731687303715884105727, 0),
)
}