Rollup merge of #106823 - m-ou-se:format-args-as-str-guarantees, r=dtolnay

[rust.git] / library / core / tests / num / nan.rs

#[test]
fn test_nan() {
    let x = "NaN".to_string();
    assert_eq!(format!("{}", f64::NAN), x);
    assert_eq!(format!("{:e}", f64::NAN), x);
    assert_eq!(format!("{:E}", f64::NAN), x);
}