blob: 66eb28f8cad78f66ff7fb2edf46fee7e9b35cc45 (
plain)
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
namespace AK {
template<typename T>
struct NumericLimits {
};
template<>
struct NumericLimits<bool> {
static constexpr char min() { return false; }
static constexpr char max() { return true; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<signed char> {
static constexpr signed char min() { return -__SCHAR_MAX__ - 1; }
static constexpr signed char max() { return __SCHAR_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<char> {
static constexpr char min() { return -__SCHAR_MAX__ - 1; }
static constexpr char max() { return __SCHAR_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<short> {
static constexpr short min() { return -__SHRT_MAX__ - 1; }
static constexpr short max() { return __SHRT_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<int> {
static constexpr int min() { return -__INT_MAX__ - 1; }
static constexpr int max() { return __INT_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long> {
static constexpr long min() { return -__LONG_MAX__ - 1; }
static constexpr long max() { return __LONG_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long long> {
static constexpr long long min() { return -__LONG_LONG_MAX__ - 1; }
static constexpr long long max() { return __LONG_LONG_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<unsigned char> {
static constexpr unsigned char min() { return 0; }
static constexpr unsigned char max() { return __SCHAR_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned short> {
static constexpr unsigned short min() { return 0; }
static constexpr unsigned short max() { return __SHRT_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned> {
static constexpr unsigned min() { return 0; }
static constexpr unsigned max() { return __INT_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned long> {
static constexpr unsigned long min() { return 0; }
static constexpr unsigned long max() { return __LONG_MAX__ * 2ul + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned long long> {
static constexpr unsigned long long min() { return 0; }
static constexpr unsigned long long max() { return __LONG_LONG_MAX__ * 2ull + 1; }
static constexpr bool is_signed() { return false; }
};
#ifndef KERNEL
template<>
struct NumericLimits<float> {
static constexpr float lowest() { return -__FLT_MAX__; }
static constexpr float min() { return __FLT_MIN__; }
static constexpr float max() { return __FLT_MAX__; }
static constexpr float epsilon() { return __FLT_EPSILON__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<double> {
static constexpr double lowest() { return -__DBL_MAX__; }
static constexpr double min() { return __DBL_MIN__; }
static constexpr double max() { return __DBL_MAX__; }
static constexpr double epsilon() { return __DBL_EPSILON__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long double> {
static constexpr long double lowest() { return -__LDBL_MAX__; }
static constexpr long double min() { return __LDBL_MIN__; }
static constexpr long double max() { return __LDBL_MAX__; }
static constexpr long double epsilon() { return __LDBL_EPSILON__; }
static constexpr bool is_signed() { return true; }
};
#endif
}
using AK::NumericLimits;
|
