#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(exact_div)]
fn main() {
    assert_eq!(64u8.checked_exact_div(2), Some(32));
    assert_eq!(64u8.checked_exact_div(32), Some(2));
    assert_eq!(64u8.checked_exact_div(0), None);
    assert_eq!(65u8.checked_exact_div(2), None);
}