1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
extern crate toml;
#[macro_use]
extern crate serde_derive;
use toml::Value;
#[rustfmt::skip] // appears to be a bug in rustfmt to make this converge...
macro_rules! float_inf_tests {
($ty:ty) => {{
#[derive(Serialize, Deserialize)]
struct S {
sf1: $ty,
sf2: $ty,
sf3: $ty,
sf4: $ty,
sf5: $ty,
sf6: $ty,
sf7: $ty,
sf8: $ty,
}
let inf: S = toml::from_str(
r"
# infinity
sf1 = inf # positive infinity
sf2 = +inf # positive infinity
sf3 = -inf # negative infinity
# not a number
sf4 = nan # actual sNaN/qNaN encoding is implementation specific
sf5 = +nan # same as `nan`
sf6 = -nan # valid, actual encoding is implementation specific
# zero
sf7 = +0.0
sf8 = -0.0
",
)
.expect("Parse infinities.");
assert!(inf.sf1.is_infinite());
assert!(inf.sf1.is_sign_positive());
assert!(inf.sf2.is_infinite());
assert!(inf.sf2.is_sign_positive());
assert!(inf.sf3.is_infinite());
assert!(inf.sf3.is_sign_negative());
assert!(inf.sf4.is_nan());
assert!(inf.sf4.is_sign_positive());
assert!(inf.sf5.is_nan());
assert!(inf.sf5.is_sign_positive());
assert!(inf.sf6.is_nan());
assert!(inf.sf6.is_sign_negative());
assert_eq!(inf.sf7, 0.0);
assert!(inf.sf7.is_sign_positive());
assert_eq!(inf.sf8, 0.0);
assert!(inf.sf8.is_sign_negative());
let s = toml::to_string(&inf).unwrap();
assert_eq!(
s,
"\
sf1 = inf
sf2 = inf
sf3 = -inf
sf4 = nan
sf5 = nan
sf6 = -nan
sf7 = 0.0
sf8 = -0.0
"
);
toml::from_str::<Value>(&s).expect("roundtrip");
}};
}
#[test]
fn float_inf() {
float_inf_tests!(f32);
float_inf_tests!(f64);
}
|
