2 // (C) Copyright Boost.org 1999. Permission to copy, use, modify, sell and
3 // distribute this software is granted provided this copyright notice appears
4 // in all copies. This software is provided "as is" without express or implied
5 // warranty, and with no claim as to its suitability for any purpose.
7 // use this header as a workaround for missing <limits>
9 // See http://www.boost.org/libs/utility/limits.html for documentation.
14 #include <boost/config.hpp>
16 #ifdef BOOST_NO_LIMITS
17 # include <boost/detail/limits.hpp>
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
28 # define BOOST_LLT long long
34 class numeric_limits<BOOST_LLT>
38 BOOST_STATIC_CONSTANT(bool, is_specialized = true);
39 #ifdef BOOST_HAS_MS_INT64
40 static BOOST_LLT min(){ return 0x8000000000000000i64; }
41 static BOOST_LLT max(){ return 0x7FFFFFFFFFFFFFFFi64; }
42 #elif defined(LLONG_MAX)
43 static BOOST_LLT min(){ return LLONG_MIN; }
44 static BOOST_LLT max(){ return LLONG_MAX; }
45 #elif defined(LONGLONG_MAX)
46 static BOOST_LLT min(){ return LONGLONG_MIN; }
47 static BOOST_LLT max(){ return LONGLONG_MAX; }
49 static BOOST_LLT min(){ return 1LL << (sizeof(BOOST_LLT) * CHAR_BIT - 1); }
50 static BOOST_LLT max(){ return ~min(); }
52 BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT -1);
53 BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT) - 1) * 301L / 1000);
54 BOOST_STATIC_CONSTANT(bool, is_signed = true);
55 BOOST_STATIC_CONSTANT(bool, is_integer = true);
56 BOOST_STATIC_CONSTANT(bool, is_exact = true);
57 BOOST_STATIC_CONSTANT(int, radix = 2);
58 static BOOST_LLT epsilon() throw() { return 0; };
59 static BOOST_LLT round_error() throw() { return 0; };
61 BOOST_STATIC_CONSTANT(int, min_exponent = 0);
62 BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
63 BOOST_STATIC_CONSTANT(int, max_exponent = 0);
64 BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);
66 BOOST_STATIC_CONSTANT(bool, has_infinity = false);
67 BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
68 BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
69 BOOST_STATIC_CONSTANT(bool, has_denorm = false);
70 BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
71 static BOOST_LLT infinity() throw() { return 0; };
72 static BOOST_LLT quiet_NaN() throw() { return 0; };
73 static BOOST_LLT signaling_NaN() throw() { return 0; };
74 static BOOST_LLT denorm_min() throw() { return 0; };
76 BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
77 BOOST_STATIC_CONSTANT(bool, is_bounded = false);
78 BOOST_STATIC_CONSTANT(bool, is_modulo = false);
80 BOOST_STATIC_CONSTANT(bool, traps = false);
81 BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
82 BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);
87 class numeric_limits<unsigned BOOST_LLT>
91 BOOST_STATIC_CONSTANT(bool, is_specialized = true);
92 #ifdef BOOST_HAS_MS_INT64
93 static unsigned BOOST_LLT min(){ return 0ui64; }
94 static unsigned BOOST_LLT max(){ return 0xFFFFFFFFFFFFFFFFui64; }
95 #elif defined(ULLONG_MAX) && defined(ULLONG_MIN)
96 static unsigned BOOST_LLT min(){ return ULLONG_MIN; }
97 static unsigned BOOST_LLT max(){ return ULLONG_MAX; }
98 #elif defined(ULONGLONG_MAX) && defined(ULONGLONG_MIN)
99 static unsigned BOOST_LLT min(){ return ULONGLONG_MIN; }
100 static unsigned BOOST_LLT max(){ return ULONGLONG_MAX; }
102 static unsigned BOOST_LLT min(){ return 0uLL; }
103 static unsigned BOOST_LLT max(){ return ~0uLL; }
105 BOOST_STATIC_CONSTANT(int, digits = sizeof(BOOST_LLT) * CHAR_BIT);
106 BOOST_STATIC_CONSTANT(int, digits10 = (CHAR_BIT * sizeof (BOOST_LLT)) * 301L / 1000);
107 BOOST_STATIC_CONSTANT(bool, is_signed = false);
108 BOOST_STATIC_CONSTANT(bool, is_integer = true);
109 BOOST_STATIC_CONSTANT(bool, is_exact = true);
110 BOOST_STATIC_CONSTANT(int, radix = 2);
111 static unsigned BOOST_LLT epsilon() throw() { return 0; };
112 static unsigned BOOST_LLT round_error() throw() { return 0; };
114 BOOST_STATIC_CONSTANT(int, min_exponent = 0);
115 BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
116 BOOST_STATIC_CONSTANT(int, max_exponent = 0);
117 BOOST_STATIC_CONSTANT(int, max_exponent10 = 0);
119 BOOST_STATIC_CONSTANT(bool, has_infinity = false);
120 BOOST_STATIC_CONSTANT(bool, has_quiet_NaN = false);
121 BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
122 BOOST_STATIC_CONSTANT(bool, has_denorm = false);
123 BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
124 static unsigned BOOST_LLT infinity() throw() { return 0; };
125 static unsigned BOOST_LLT quiet_NaN() throw() { return 0; };
126 static unsigned BOOST_LLT signaling_NaN() throw() { return 0; };
127 static unsigned BOOST_LLT denorm_min() throw() { return 0; };
129 BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
130 BOOST_STATIC_CONSTANT(bool, is_bounded = false);
131 BOOST_STATIC_CONSTANT(bool, is_modulo = false);
133 BOOST_STATIC_CONSTANT(bool, traps = false);
134 BOOST_STATIC_CONSTANT(bool, tinyness_before = false);
135 BOOST_STATIC_CONSTANT(float_round_style, round_style = round_toward_zero);