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::approx_constant, |
24 | clippy::cast_possible_wrap, |
25 | clippy::cast_sign_loss, |
26 | clippy::excessive_precision, |
27 | clippy::unreadable_literal, |
28 | clippy::wildcard_imports |
29 | )] |
30 | |
31 | #[path = "../src/common.rs" ] |
32 | mod common; |
33 | |
34 | use common::*; |
35 | |
36 | #[test] |
37 | fn test_decimal_length9() { |
38 | assert_eq!(1, decimal_length9(0)); |
39 | assert_eq!(1, decimal_length9(1)); |
40 | assert_eq!(1, decimal_length9(9)); |
41 | assert_eq!(2, decimal_length9(10)); |
42 | assert_eq!(2, decimal_length9(99)); |
43 | assert_eq!(3, decimal_length9(100)); |
44 | assert_eq!(3, decimal_length9(999)); |
45 | assert_eq!(9, decimal_length9(999999999)); |
46 | } |
47 | |
48 | #[test] |
49 | fn test_ceil_log2_pow5() { |
50 | assert_eq!(1, ceil_log2_pow5(0)); |
51 | assert_eq!(3, ceil_log2_pow5(1)); |
52 | assert_eq!(5, ceil_log2_pow5(2)); |
53 | assert_eq!(7, ceil_log2_pow5(3)); |
54 | assert_eq!(10, ceil_log2_pow5(4)); |
55 | assert_eq!(8192, ceil_log2_pow5(3528)); |
56 | } |
57 | |
58 | #[test] |
59 | fn test_log10_pow2() { |
60 | assert_eq!(0, log10_pow2(0)); |
61 | assert_eq!(0, log10_pow2(1)); |
62 | assert_eq!(0, log10_pow2(2)); |
63 | assert_eq!(0, log10_pow2(3)); |
64 | assert_eq!(1, log10_pow2(4)); |
65 | assert_eq!(496, log10_pow2(1650)); |
66 | } |
67 | |
68 | #[test] |
69 | fn test_log10_pow5() { |
70 | assert_eq!(0, log10_pow5(0)); |
71 | assert_eq!(0, log10_pow5(1)); |
72 | assert_eq!(1, log10_pow5(2)); |
73 | assert_eq!(2, log10_pow5(3)); |
74 | assert_eq!(2, log10_pow5(4)); |
75 | assert_eq!(1831, log10_pow5(2620)); |
76 | } |
77 | |
78 | #[test] |
79 | fn test_float_to_bits() { |
80 | assert_eq!(0, 0.0_f32.to_bits()); |
81 | assert_eq!(0x40490fda, 3.1415926_f32.to_bits()); |
82 | } |
83 | |
84 | #[test] |
85 | fn test_double_to_bits() { |
86 | assert_eq!(0, 0.0_f64.to_bits()); |
87 | assert_eq!( |
88 | 0x400921FB54442D18, |
89 | 3.1415926535897932384626433_f64.to_bits(), |
90 | ); |
91 | } |
92 | |