tests/ui/lint/invalid-nan-comparison-suggestion.rs


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//@ check-pass
//@ run-rustfix

#![feature(f16, f128)]

fn main() {
    let x = 5f16;
    let _ = x == f16::NAN;
    //~^ WARN incorrect NaN comparison
    let _ = x != f16::NAN;
    //~^ WARN incorrect NaN comparison

    let x = 5f32;
    let _ = x == f32::NAN;
    //~^ WARN incorrect NaN comparison
    let _ = x != f32::NAN;
    //~^ WARN incorrect NaN comparison

    let x = 5f64;
    let _ = x == f64::NAN;
    //~^ WARN incorrect NaN comparison
    let _ = x != f64::NAN;
    //~^ WARN incorrect NaN comparison

    let x = 5f128;
    let _ = x == f128::NAN;
    //~^ WARN incorrect NaN comparison
    let _ = x != f128::NAN;
    //~^ WARN incorrect NaN comparison

    let b = &2.3f32;
    if b != &f32::NAN {}
    //~^ WARN incorrect NaN comparison

    let b = &2.3f32;
    if b != { &f32::NAN } {}
    //~^ WARN incorrect NaN comparison

    let _ =
        b != {
    //~^ WARN incorrect NaN comparison
            &f32::NAN
        };

    #[allow(unused_macros)]
    macro_rules! nan { () => { f32::NAN }; }
    macro_rules! number { () => { 5f32 }; }

    let _ = nan!() == number!();
    //~^ WARN incorrect NaN comparison
    let _ = number!() != nan!();
    //~^ WARN incorrect NaN comparison
}