80 lines
1.8 KiB
Rust
80 lines
1.8 KiB
Rust
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extern crate toml;
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#[macro_use]
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extern crate serde_derive;
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use toml::Value;
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macro_rules! float_inf_tests {
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($ty:ty) => {{
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#[derive(Serialize, Deserialize)]
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struct S {
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sf1: $ty,
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sf2: $ty,
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sf3: $ty,
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sf4: $ty,
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sf5: $ty,
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sf6: $ty,
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sf7: $ty,
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sf8: $ty,
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}
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let inf: S = toml::from_str(
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r"
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# infinity
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sf1 = inf # positive infinity
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sf2 = +inf # positive infinity
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sf3 = -inf # negative infinity
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# not a number
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sf4 = nan # actual sNaN/qNaN encoding is implementation specific
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sf5 = +nan # same as `nan`
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sf6 = -nan # valid, actual encoding is implementation specific
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# zero
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sf7 = +0.0
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sf8 = -0.0
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").expect("Parse infinities.");
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assert!(inf.sf1.is_infinite());
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assert!(inf.sf1.is_sign_positive());
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assert!(inf.sf2.is_infinite());
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assert!(inf.sf2.is_sign_positive());
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assert!(inf.sf3.is_infinite());
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assert!(inf.sf3.is_sign_negative());
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assert!(inf.sf4.is_nan());
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assert!(inf.sf4.is_sign_positive());
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assert!(inf.sf5.is_nan());
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assert!(inf.sf5.is_sign_positive());
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assert!(inf.sf6.is_nan());
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assert!(inf.sf6.is_sign_negative());
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assert_eq!(inf.sf7, 0.0);
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assert!(inf.sf7.is_sign_positive());
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assert_eq!(inf.sf8, 0.0);
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assert!(inf.sf8.is_sign_negative());
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let s = toml::to_string(&inf).unwrap();
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assert_eq!(
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s, "\
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sf1 = inf
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sf2 = inf
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sf3 = -inf
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sf4 = nan
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sf5 = nan
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sf6 = -nan
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sf7 = 0.0
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sf8 = -0.0
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"
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);
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toml::from_str::<Value>(&s).expect("roundtrip");
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}};
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}
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#[test]
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#[cfg(feature = "test-nan-sign")]
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fn float_inf() {
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float_inf_tests!(f32);
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float_inf_tests!(f64);
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}
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