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gerrit.named-data.net / ndn-cxx / 9939dcdf81b2c83a69663bf1113bae1e72610b3c / . / include / ndnboost / limits.hpp
blob: d3fddb76ebac3650cb018c50c36b190d0547390f [file] [log] [blame]
Jeff Thompsona28eed82013-08-22 16:21:10 -0700[diff] [blame]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 <ndnboost/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 ::ndnboost::long_long_type
30# define BOOST_ULLT ::ndnboost::ulong_long_type
31#endif
32
33#include <climits> // for CHAR_BIT
34
35namespace 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