#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(bigint_helper_methods)]
fn main() {
    let (a1, a0): (i8, u8) = (10, u8::MAX);
    let (b1, b0): (i8, u8) = (-5, 9);
    let carry0 = false;
    let (sum0, carry1) = a0.carrying_add(b0, carry0);
    assert_eq!(carry1, true);
    let (sum1, overflow) = a1.carrying_add(b1, carry1);
    assert_eq!(overflow, false);
    assert_eq!((sum1, sum0), (6, 8));
}