#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    assert!(! (3..).contains(& 2));
    assert!((3..).contains(& 3));
    assert!((3..).contains(& 1_000_000_000));
    assert!((0.0..).contains(& 0.5));
    assert!(! (0.0..).contains(& f32::NAN));
    assert!(! (f32::NAN..).contains(& 0.5));
}