1 // Translated from C to Rust. The original C code can be found at
2 // https://github.com/ulfjack/ryu and carries the following license:
3 //
4 // Copyright 2018 Ulf Adams
5 //
6 // The contents of this file may be used under the terms of the Apache License,
7 // Version 2.0.
8 //
9 // (See accompanying file LICENSE-Apache or copy at
10 // http://www.apache.org/licenses/LICENSE-2.0)
11 //
12 // Alternatively, the contents of this file may be used under the terms of
13 // the Boost Software License, Version 1.0.
14 // (See accompanying file LICENSE-Boost or copy at
15 // https://www.boost.org/LICENSE_1_0.txt)
16 //
17 // Unless required by applicable law or agreed to in writing, this software
18 // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
19 // KIND, either express or implied.
20
21 #![allow(dead_code)]
22 #![allow(
23 clippy::cast_lossless,
24 clippy::cast_possible_truncation,
25 clippy::cast_possible_wrap,
26 clippy::cast_possible_wrap,
27 clippy::cast_sign_loss,
28 clippy::checked_conversions,
29 clippy::float_cmp,
30 clippy::manual_range_contains,
31 clippy::similar_names,
32 clippy::too_many_lines,
33 clippy::unreadable_literal,
34 clippy::unseparated_literal_suffix,
35 clippy::wildcard_imports
36 )]
37
38 #[path = "../src/common.rs"]
39 mod common;
40
41 #[cfg(not(feature = "small"))]
42 #[path = "../src/d2s_full_table.rs"]
43 mod d2s_full_table;
44
45 #[path = "../src/d2s_intrinsics.rs"]
46 mod d2s_intrinsics;
47
48 #[cfg(feature = "small")]
49 #[path = "../src/d2s_small_table.rs"]
50 mod d2s_small_table;
51
52 #[path = "../src/d2s.rs"]
53 mod d2s;
54
55 #[path = "../src/f2s_intrinsics.rs"]
56 mod f2s_intrinsics;
57
58 #[path = "../src/f2s.rs"]
59 mod f2s;
60
61 #[path = "../src/s2f.rs"]
62 mod s2f;
63
64 #[path = "../src/parse.rs"]
65 mod parse;
66
67 use crate::parse::Error;
68 use crate::s2f::s2f;
69
70 impl PartialEq for Error {
eq(&self, other: &Self) -> bool71 fn eq(&self, other: &Self) -> bool {
72 *self as u8 == *other as u8
73 }
74 }
75
76 #[test]
test_basic()77 fn test_basic() {
78 assert_eq!(0.0, s2f(b"0").unwrap());
79 assert_eq!(-0.0, s2f(b"-0").unwrap());
80 assert_eq!(1.0, s2f(b"1").unwrap());
81 assert_eq!(-1.0, s2f(b"-1").unwrap());
82 assert_eq!(123456792.0, s2f(b"123456789").unwrap());
83 assert_eq!(299792448.0, s2f(b"299792458").unwrap());
84 }
85
86 #[test]
test_min_max()87 fn test_min_max() {
88 assert_eq!(1e-45, s2f(b"1e-45").unwrap());
89 assert_eq!(f32::MIN_POSITIVE, s2f(b"1.1754944e-38").unwrap());
90 assert_eq!(f32::MAX, s2f(b"3.4028235e+38").unwrap());
91 }
92
93 #[test]
test_mantissa_rounding_overflow()94 fn test_mantissa_rounding_overflow() {
95 assert_eq!(1.0, s2f(b"0.999999999").unwrap());
96 assert_eq!(f32::INFINITY, s2f(b"3.4028236e+38").unwrap());
97 assert_eq!(1.1754944e-38, s2f(b"1.17549430e-38").unwrap()); // FLT_MIN
98 assert_eq!(1.1754944e-38, s2f(b"1.17549431e-38").unwrap());
99 assert_eq!(1.1754944e-38, s2f(b"1.17549432e-38").unwrap());
100 assert_eq!(1.1754944e-38, s2f(b"1.17549433e-38").unwrap());
101 assert_eq!(1.1754944e-38, s2f(b"1.17549434e-38").unwrap());
102 assert_eq!(1.1754944e-38, s2f(b"1.17549435e-38").unwrap());
103 }
104
105 #[test]
test_trailing_zeros()106 fn test_trailing_zeros() {
107 assert_eq!(26843550.0, s2f(b"26843549.5").unwrap());
108 assert_eq!(50000004.0, s2f(b"50000002.5").unwrap());
109 assert_eq!(99999992.0, s2f(b"99999989.5").unwrap());
110 }
111