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
|
// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include <cstddef>
#include "pw_polyfill/standard_library/namespace.h"
// Defines the std::byte type if it is not present.
#ifndef __cpp_lib_byte
#define __cpp_lib_byte 201603L
_PW_POLYFILL_BEGIN_NAMESPACE_STD
enum class byte : unsigned char {};
template <typename I>
constexpr I to_integer(byte b) noexcept {
return I(b);
}
constexpr byte operator|(byte l, byte r) noexcept {
return byte(static_cast<unsigned int>(l) | static_cast<unsigned int>(r));
}
constexpr byte operator&(byte l, byte r) noexcept {
return byte(static_cast<unsigned int>(l) & static_cast<unsigned int>(r));
}
constexpr byte operator^(byte l, byte r) noexcept {
return byte(static_cast<unsigned int>(l) ^ static_cast<unsigned int>(r));
}
constexpr byte operator~(byte b) noexcept {
return byte(~static_cast<unsigned int>(b));
}
template <typename I>
constexpr byte operator<<(byte b, I shift) noexcept {
return byte(static_cast<unsigned int>(b) << shift);
}
template <typename I>
constexpr byte operator>>(byte b, I shift) noexcept {
return byte(static_cast<unsigned int>(b) >> shift);
}
constexpr byte& operator|=(byte& l, byte r) noexcept { return l = l | r; }
constexpr byte& operator&=(byte& l, byte r) noexcept { return l = l & r; }
constexpr byte& operator^=(byte& l, byte r) noexcept { return l = l ^ r; }
template <typename I>
constexpr byte& operator<<=(byte& b, I shift) noexcept {
return b = b << shift;
}
template <typename I>
constexpr byte& operator>>=(byte& b, I shift) noexcept {
return b = b >> shift;
}
_PW_POLYFILL_END_NAMESPACE_STD
#endif // __cpp_lib_byte
|
