#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(f128)]
fn main() {
    #[cfg(all(target_arch = "x86_64", target_os = "linux"))]
    {
        let x = 3.5_f128;
        let y = -3.5_f128;
        assert_eq!(x.abs(), x);
        assert_eq!(y.abs(), - y);
        assert!(f128::NAN.abs().is_nan());
    }
}