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 # include <boost/detail/limits.hpp>

    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