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8d9254fc | 1 | // Copyright (C) 2017-2020 Free Software Foundation, Inc. |
e0472d7e JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++17" } | |
7b936140 | 19 | // { dg-do compile { target c++17 } } |
e0472d7e JW |
20 | |
21 | #include <cstddef> | |
22 | ||
23 | constexpr bool is_byte(std::byte) { return true; } | |
24 | template<typename T> constexpr bool is_byte(T) { return false; } | |
25 | ||
26 | template<typename T> | |
27 | constexpr bool test_lshift_assign(unsigned char c, T t) | |
28 | { | |
29 | std::byte b{c}; | |
30 | b <<= t; | |
31 | return b == std::byte(c << t); | |
32 | } | |
33 | ||
34 | static_assert( test_lshift_assign(0, 1) ); | |
35 | static_assert( test_lshift_assign(0, 1u) ); | |
36 | static_assert( test_lshift_assign(0, 1ll) ); | |
37 | static_assert( test_lshift_assign(4, 1) ); | |
38 | static_assert( test_lshift_assign(9, 2u) ); | |
39 | static_assert( test_lshift_assign(16, 3ll) ); | |
40 | static_assert( test_lshift_assign(127, 1) ); | |
41 | static_assert( test_lshift_assign(255, 2u) ); | |
42 | static_assert( test_lshift_assign(63, 3ll) ); | |
43 | ||
44 | template<typename T> | |
45 | constexpr bool test_lshift(unsigned char c, T t) | |
46 | { | |
47 | const std::byte b{c}; | |
48 | const std::byte b2 = b << t; | |
49 | return b2 == std::byte(c << t); | |
50 | } | |
51 | ||
52 | static_assert( test_lshift(0, 1) ); | |
53 | static_assert( test_lshift(0, 1u) ); | |
54 | static_assert( test_lshift(0, 1ll) ); | |
55 | static_assert( test_lshift(4, 1) ); | |
56 | static_assert( test_lshift(9, 2u) ); | |
57 | static_assert( test_lshift(16, 3ll) ); | |
58 | static_assert( test_lshift(127, 1) ); | |
59 | static_assert( test_lshift(255, 2u) ); | |
60 | static_assert( test_lshift(63, 3ll) ); | |
61 | ||
62 | template<typename T> | |
63 | constexpr bool test_rshift_assign(unsigned char c, T t) | |
64 | { | |
65 | std::byte b{c}; | |
66 | b >>= t; | |
67 | return b == std::byte(c >> t); | |
68 | } | |
69 | ||
70 | static_assert( test_rshift_assign(0, 1) ); | |
71 | static_assert( test_rshift_assign(0, 1u) ); | |
72 | static_assert( test_rshift_assign(0, 1ll) ); | |
73 | static_assert( test_rshift_assign(4, 1) ); | |
74 | static_assert( test_rshift_assign(9, 2u) ); | |
75 | static_assert( test_rshift_assign(16, 3ll) ); | |
76 | static_assert( test_rshift_assign(127, 1) ); | |
77 | static_assert( test_rshift_assign(255, 2u) ); | |
78 | static_assert( test_rshift_assign(63, 3ll) ); | |
79 | ||
80 | template<typename T> | |
81 | constexpr bool test_rshift(unsigned char c, T t) | |
82 | { | |
83 | const std::byte b{c}; | |
84 | const std::byte b2 = b >> t; | |
85 | return b2 == std::byte(c >> t); | |
86 | } | |
87 | ||
88 | static_assert( test_rshift(0, 1) ); | |
89 | static_assert( test_rshift(0, 1u) ); | |
90 | static_assert( test_rshift(0, 1ll) ); | |
91 | static_assert( test_rshift(4, 1) ); | |
92 | static_assert( test_rshift(9, 2u) ); | |
93 | static_assert( test_rshift(16, 3ll) ); | |
94 | static_assert( test_rshift(127, 1) ); | |
95 | static_assert( test_rshift(255, 2u) ); | |
96 | static_assert( test_rshift(63, 3ll) ); | |
97 | ||
98 | constexpr bool test_or_assign(unsigned char l, unsigned char r) | |
99 | { | |
100 | std::byte b{l}; | |
101 | b |= std::byte{r}; | |
102 | return b == std::byte(l | r); | |
103 | } | |
104 | ||
105 | static_assert( test_or_assign(0, 1) ); | |
106 | static_assert( test_or_assign(4, 1) ); | |
107 | static_assert( test_or_assign(9, 2) ); | |
108 | static_assert( test_or_assign(16, 3) ); | |
109 | static_assert( test_or_assign(63, 3) ); | |
110 | static_assert( test_or_assign(127, 1) ); | |
111 | static_assert( test_or_assign(255, 2) ); | |
112 | ||
113 | constexpr bool test_or(unsigned char l, unsigned char r) | |
114 | { | |
115 | const std::byte b1{l}; | |
116 | const std::byte b2{r}; | |
117 | return (b1 | b2) == std::byte(l | r); | |
118 | } | |
119 | ||
120 | static_assert( test_or(0, 1) ); | |
121 | static_assert( test_or(0, 1u) ); | |
122 | static_assert( test_or(0, 1ll) ); | |
123 | static_assert( test_or(4, 1) ); | |
124 | static_assert( test_or(9, 2u) ); | |
125 | static_assert( test_or(16, 3ll) ); | |
126 | static_assert( test_or(127, 1) ); | |
127 | static_assert( test_or(255, 2u) ); | |
128 | static_assert( test_or(63, 3ll) ); | |
129 | ||
130 | constexpr bool test_and_assign(unsigned char l, unsigned char r) | |
131 | { | |
132 | std::byte b{l}; | |
133 | b &= std::byte{r}; | |
134 | return b == std::byte(l & r); | |
135 | } | |
136 | ||
137 | static_assert( test_and_assign(0, 1) ); | |
138 | static_assert( test_and_assign(0, 1u) ); | |
139 | static_assert( test_and_assign(0, 1ll) ); | |
140 | static_assert( test_and_assign(4, 1) ); | |
141 | static_assert( test_and_assign(9, 2u) ); | |
142 | static_assert( test_and_assign(16, 3ll) ); | |
143 | static_assert( test_and_assign(127, 1) ); | |
144 | static_assert( test_and_assign(255, 2u) ); | |
145 | static_assert( test_and_assign(63, 3ll) ); | |
146 | ||
147 | constexpr bool test_and(unsigned char l, unsigned char r) | |
148 | { | |
149 | const std::byte b1{l}; | |
150 | const std::byte b2{r}; | |
151 | return (b1 & b2) == std::byte(l & r); | |
152 | } | |
153 | ||
154 | static_assert( test_and(0, 1) ); | |
155 | static_assert( test_and(0, 1u) ); | |
156 | static_assert( test_and(0, 1ll) ); | |
157 | static_assert( test_and(4, 1) ); | |
158 | static_assert( test_and(9, 2u) ); | |
159 | static_assert( test_and(16, 3ll) ); | |
160 | static_assert( test_and(127, 1) ); | |
161 | static_assert( test_and(255, 2u) ); | |
162 | static_assert( test_and(63, 3ll) ); | |
163 | ||
164 | constexpr bool test_xor_assign(unsigned char l, unsigned char r) | |
165 | { | |
166 | std::byte b{l}; | |
167 | b ^= std::byte{r}; | |
168 | return b == std::byte(l ^ r); | |
169 | } | |
170 | ||
171 | static_assert( test_xor_assign(0, 1) ); | |
172 | static_assert( test_xor_assign(0, 1u) ); | |
173 | static_assert( test_xor_assign(0, 1ll) ); | |
174 | static_assert( test_xor_assign(4, 1) ); | |
175 | static_assert( test_xor_assign(9, 2u) ); | |
176 | static_assert( test_xor_assign(16, 3ll) ); | |
177 | static_assert( test_xor_assign(127, 1) ); | |
178 | static_assert( test_xor_assign(255, 2u) ); | |
179 | static_assert( test_xor_assign(63, 3ll) ); | |
180 | ||
181 | constexpr bool test_xor(unsigned char l, unsigned char r) | |
182 | { | |
183 | const std::byte b1{l}; | |
184 | const std::byte b2{r}; | |
185 | return (b1 ^ b2) == std::byte(l ^ r); | |
186 | } | |
187 | ||
188 | static_assert( test_xor(0, 1) ); | |
189 | static_assert( test_xor(0, 1u) ); | |
190 | static_assert( test_xor(0, 1ll) ); | |
191 | static_assert( test_xor(4, 1) ); | |
192 | static_assert( test_xor(9, 2u) ); | |
193 | static_assert( test_xor(16, 3ll) ); | |
194 | static_assert( test_xor(127, 1) ); | |
195 | static_assert( test_xor(255, 2u) ); | |
196 | static_assert( test_xor(63, 3ll) ); | |
197 | ||
198 | constexpr bool test_complement(unsigned char c) | |
199 | { | |
200 | const std::byte b{c}; | |
201 | return ~b == std::byte(~c); | |
202 | } | |
203 | ||
204 | static_assert( test_complement(0) ); | |
205 | static_assert( test_complement(4) ); | |
206 | static_assert( test_complement(9) ); | |
207 | static_assert( test_complement(16) ); | |
208 | static_assert( test_complement(63) ); | |
209 | static_assert( test_complement(127) ); | |
210 | static_assert( test_complement(255) ); | |
211 | ||
212 | template<typename T> | |
213 | constexpr bool test_to_integer(unsigned char c) | |
214 | { | |
215 | std::byte b{c}; | |
216 | return std::to_integer<T>(b) == T(c); | |
217 | } | |
218 | ||
219 | static_assert( test_to_integer<int>(0) ); | |
220 | static_assert( test_to_integer<int>(255) ); | |
59019b42 | 221 | static_assert( test_to_integer<signed char>(0) ); |
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222 | static_assert( test_to_integer<signed char>(255) ); |
223 | static_assert( test_to_integer<unsigned>(0) ); | |
224 | static_assert( test_to_integer<unsigned>(255) ); | |
59019b42 TH |
225 | #ifdef _GLIBCXX_USE_CHAR8_T |
226 | static_assert( test_to_integer<char8_t>(0) ); | |
227 | static_assert( test_to_integer<char8_t>(255) ); | |
228 | #endif | |
229 | static_assert( test_to_integer<char16_t>(0) ); | |
230 | static_assert( test_to_integer<char16_t>(255) ); | |
231 | static_assert( test_to_integer<char32_t>(0) ); | |
232 | static_assert( test_to_integer<char32_t>(255) ); |