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"]
39mod common;
40
41#[cfg(not(feature = "small"))]
42#[path = "../src/d2s_full_table.rs"]
43mod d2s_full_table;
44
45#[path = "../src/d2s_intrinsics.rs"]
46mod d2s_intrinsics;
47
48#[cfg(feature = "small")]
49#[path = "../src/d2s_small_table.rs"]
50mod d2s_small_table;
51
52#[path = "../src/d2s.rs"]
53mod d2s;
54
55#[path = "../src/f2s_intrinsics.rs"]
56mod f2s_intrinsics;
57
58#[path = "../src/f2s.rs"]
59mod f2s;
60
61#[path = "../src/s2f.rs"]
62mod s2f;
63
64#[path = "../src/parse.rs"]
65mod parse;
66
67use crate::parse::Error;
68use crate::s2f::s2f;
69
70impl PartialEq for Error {
71 fn eq(&self, other: &Self) -> bool {
72 *self as u8 == *other as u8
73 }
74}
75
76#[test]
77fn 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]
87fn 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]
94fn 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]
106fn 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