limits.hpp
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1 
2 // (C) Copyright John maddock 1999.
3 // (C) David Abrahams 2002. Distributed under the Boost
4 // Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // use this header as a workaround for missing <limits>
8 
9 // See http://www.boost.org/libs/compatibility/index.html for documentation.
10 
11 #ifndef BOOST_LIMITS
12 #define BOOST_LIMITS
13 
14 #include <boost/config.hpp>
15 
16 #ifdef BOOST_NO_LIMITS
17 # error "There is no std::numeric_limits suppport available."
18 #else
19 # include <limits>
20 #endif
21 
22 #if (defined(BOOST_HAS_LONG_LONG) && defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)) \
23  || (defined(BOOST_HAS_MS_INT64) && defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS))
24 // Add missing specializations for numeric_limits:
25 #ifdef BOOST_HAS_MS_INT64
26 # define BOOST_LLT __int64
27 # define BOOST_ULLT unsigned __int64
28 #else
29 # define BOOST_LLT ::boost::long_long_type
30 # define BOOST_ULLT ::boost::ulong_long_type
31 #endif
32 
33 #include <climits> // for CHAR_BIT
34 
35 namespace std
36 {
37  template<>
38  class numeric_limits<BOOST_LLT>
39  {
40  public:
41 
42  BOOST_STATIC_CONSTANT(bool, is_specialized = true);
43 #ifdef BOOST_HAS_MS_INT64
44  static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x8000000000000000i64; }
45  static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0x7FFFFFFFFFFFFFFFi64; }
46 #elif defined(LLONG_MAX)
47  static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MIN; }
48  static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LLONG_MAX; }
49 #elif defined(LONGLONG_MAX)
50  static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MIN; }
51  static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return LONGLONG_MAX; }
52 #else
53  static BOOST_LLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 1LL << (sizeof(BOOST_LLT) * CHAR_BIT - 1); }
54  static BOOST_LLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~(min)(); }
55 #endif
56  BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT -1);
57  BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT) - 1) * 301L / 1000);
58  BOOST_STATIC_CONSTANT(bool, is_signed = true);
59  BOOST_STATIC_CONSTANT(bool, is_integer = true);
60  BOOST_STATIC_CONSTANT(bool, is_exact = true);
61  BOOST_STATIC_CONSTANT(int, radix = 2);
62  static BOOST_LLT epsilon() throw() { return 0; };
63  static BOOST_LLT round_error() throw() { return 0; };
64 
65  BOOST_STATIC_CONSTANT(int, min_exponent = 0);
66  BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
67  BOOST_STATIC_CONSTANT(int, max_exponent = 0);
68  BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);
69 
70  BOOST_STATIC_CONSTANT(bool, has_infinity = false);
71  BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
72  BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
73  BOOST_STATIC_CONSTANT(bool, has_denorm = false);
74  BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
75  static BOOST_LLT infinity() throw() { return 0; };
76  static BOOST_LLT quiet_NaN() throw() { return 0; };
77  static BOOST_LLT signaling_NaN() throw() { return 0; };
78  static BOOST_LLT denorm_min() throw() { return 0; };
79 
80  BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
81  BOOST_STATIC_CONSTANT(bool, is_bounded = true);
82  BOOST_STATIC_CONSTANT(bool, is_modulo = true);
83 
84  BOOST_STATIC_CONSTANT(bool, traps = false);
85  BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
86  BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);
87 
88  };
89 
90  template<>
91  class numeric_limits<BOOST_ULLT>
92  {
93  public:
94 
95  BOOST_STATIC_CONSTANT(bool, is_specialized = true);
96 #ifdef BOOST_HAS_MS_INT64
97  static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0ui64; }
98  static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0xFFFFFFFFFFFFFFFFui64; }
99 #elif defined(ULLONG_MAX) && defined(ULLONG_MIN)
100  static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MIN; }
101  static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULLONG_MAX; }
102 #elif defined(ULONGLONG_MAX) && defined(ULONGLONG_MIN)
103  static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MIN; }
104  static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ULONGLONG_MAX; }
105 #else
106  static BOOST_ULLT min BOOST_PREVENT_MACRO_SUBSTITUTION (){ return 0uLL; }
107  static BOOST_ULLT max BOOST_PREVENT_MACRO_SUBSTITUTION (){ return ~0uLL; }
108 #endif
109  BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT);
110  BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT)) * 301L / 1000);
111  BOOST_STATIC_CONSTANT(bool, is_signed = false);
112  BOOST_STATIC_CONSTANT(bool, is_integer = true);
113  BOOST_STATIC_CONSTANT(bool, is_exact = true);
114  BOOST_STATIC_CONSTANT(int, radix = 2);
115  static BOOST_ULLT epsilon() throw() { return 0; };
116  static BOOST_ULLT round_error() throw() { return 0; };
117 
118  BOOST_STATIC_CONSTANT(int, min_exponent = 0);
119  BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
120  BOOST_STATIC_CONSTANT(int, max_exponent = 0);
121  BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);
122 
123  BOOST_STATIC_CONSTANT(bool, has_infinity = false);
124  BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
125  BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
126  BOOST_STATIC_CONSTANT(bool, has_denorm = false);
127  BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
128  static BOOST_ULLT infinity() throw() { return 0; };
129  static BOOST_ULLT quiet_NaN() throw() { return 0; };
130  static BOOST_ULLT signaling_NaN() throw() { return 0; };
131  static BOOST_ULLT denorm_min() throw() { return 0; };
132 
133  BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
134  BOOST_STATIC_CONSTANT(bool, is_bounded = true);
135  BOOST_STATIC_CONSTANT(bool, is_modulo = true);
136 
137  BOOST_STATIC_CONSTANT(bool, traps = false);
138  BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
139  BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);
140 
141  };
142 }
143 #endif
144 
145 #endif
146 
BOOST_STATIC_CONSTANT
#define BOOST_STATIC_CONSTANT(type, assignment)
Definition: suffix.hpp:394
min
int min(int a, int b)
epsilon
double epsilon
config.hpp
std
BOOST_PREVENT_MACRO_SUBSTITUTION
#define BOOST_PREVENT_MACRO_SUBSTITUTION
Definition: suffix.hpp:358

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autogenerated on Thu Feb 8 2024 03:42:04