rust-clippy/tests/compile-fail/cmp_nan.rs

#![feature(plugin)]
#![plugin(clippy)]

#[deny(cmp_nan)]
#[allow(float_cmp)]
fn main() {
    let x = 5f32;
    x == std::f32::NAN; //~ERROR doomed comparison with NAN
    x != std::f32::NAN; //~ERROR doomed comparison with NAN
    x < std::f32::NAN;  //~ERROR doomed comparison with NAN
    x > std::f32::NAN;  //~ERROR doomed comparison with NAN
    x <= std::f32::NAN; //~ERROR doomed comparison with NAN
    x >= std::f32::NAN; //~ERROR doomed comparison with NAN

    let y = 0f64;
    y == std::f64::NAN; //~ERROR doomed comparison with NAN
    y != std::f64::NAN; //~ERROR doomed comparison with NAN
    y < std::f64::NAN;  //~ERROR doomed comparison with NAN
    y > std::f64::NAN;  //~ERROR doomed comparison with NAN
    y <= std::f64::NAN; //~ERROR doomed comparison with NAN
    y >= std::f64::NAN; //~ERROR doomed comparison with NAN
}