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

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//@ check-pass
fn main() {
f32();
f64();
}
const TEST: bool = 5f32 == f32::NAN;
//~^ WARN incorrect NaN comparison
fn f32() {
macro_rules! number { () => { 5f32 }; }
let x = number!();
x == f32::NAN;
//~^ WARN incorrect NaN comparison
x != f32::NAN;
//~^ WARN incorrect NaN comparison
x < f32::NAN;
//~^ WARN incorrect NaN comparison
x > f32::NAN;
//~^ WARN incorrect NaN comparison
x <= f32::NAN;
//~^ WARN incorrect NaN comparison
x >= f32::NAN;
//~^ WARN incorrect NaN comparison
number!() == f32::NAN;
//~^ WARN incorrect NaN comparison
f32::NAN != number!();
//~^ WARN incorrect NaN comparison
}
fn f64() {
macro_rules! number { () => { 5f64 }; }
let x = number!();
x == f64::NAN;
//~^ WARN incorrect NaN comparison
x != f64::NAN;
//~^ WARN incorrect NaN comparison
x < f64::NAN;
//~^ WARN incorrect NaN comparison
x > f64::NAN;
//~^ WARN incorrect NaN comparison
x <= f64::NAN;
//~^ WARN incorrect NaN comparison
x >= f64::NAN;
//~^ WARN incorrect NaN comparison
number!() == f64::NAN;
//~^ WARN incorrect NaN comparison
f64::NAN != number!();
//~^ WARN incorrect NaN comparison
}