1 // Boost integer_fwd.hpp header file ---------------------------------------//
3 // (C) Copyright Dave Abrahams and Daryle Walker 2001. 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)
7 // See http://www.boost.org/libs/integer for documentation.
9 #ifndef BOOST_INTEGER_FWD_HPP
10 #define BOOST_INTEGER_FWD_HPP
12 #include <climits> // for UCHAR_MAX, etc.
13 #include <cstddef> // for std::size_t
15 #include <boost/config.hpp> // for BOOST_NO_INTRINSIC_WCHAR_T
16 #include <boost/limits.hpp> // for std::numeric_limits
17 #include <boost/cstdint.hpp> // For intmax_t
23 #ifdef BOOST_NO_INTEGRAL_INT64_T
24 typedef unsigned long static_log2_argument_type;
25 typedef int static_log2_result_type;
26 typedef long static_min_max_signed_type;
27 typedef unsigned long static_min_max_unsigned_type;
29 typedef boost::uintmax_t static_min_max_unsigned_type;
30 typedef boost::intmax_t static_min_max_signed_type;
31 typedef boost::uintmax_t static_log2_argument_type;
32 typedef int static_log2_result_type;
35 // From <boost/cstdint.hpp> ------------------------------------------------//
37 // Only has typedefs or using statements, with #conditionals
40 // From <boost/integer_traits.hpp> -----------------------------------------//
46 class integer_traits< bool >;
49 class integer_traits< char >;
52 class integer_traits< signed char >;
55 class integer_traits< unsigned char >;
57 #ifndef BOOST_NO_INTRINSIC_WCHAR_T
59 class integer_traits< wchar_t >;
63 class integer_traits< short >;
66 class integer_traits< unsigned short >;
69 class integer_traits< int >;
72 class integer_traits< unsigned int >;
75 class integer_traits< long >;
78 class integer_traits< unsigned long >;
80 #if !defined(BOOST_NO_INTEGRAL_INT64_T) && !defined(BOOST_NO_INT64_T) && (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64))
82 class integer_traits< ::boost::long_long_type>;
85 class integer_traits< ::boost::ulong_long_type >;
89 // From <boost/integer.hpp> ------------------------------------------------//
91 template < typename LeastInt >
100 #if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
101 template< boost::long_long_type MaxValue > // maximum value to require support
103 template< long MaxValue > // maximum value to require support
105 struct int_max_value_t;
107 #if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
108 template< boost::long_long_type MinValue > // minimum value to require support
110 template< long MinValue > // minimum value to require support
112 struct int_min_value_t;
114 #if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
115 template< boost::ulong_long_type MaxValue > // maximum value to require support
117 template< unsigned long MaxValue > // maximum value to require support
122 // From <boost/integer/integer_mask.hpp> -----------------------------------//
124 template < std::size_t Bit >
125 struct high_bit_mask_t;
127 template < std::size_t Bits >
128 struct low_bits_mask_t;
131 struct low_bits_mask_t< ::std::numeric_limits<unsigned char>::digits >;
133 #if USHRT_MAX > UCHAR_MAX
135 struct low_bits_mask_t< ::std::numeric_limits<unsigned short>::digits >;
138 #if UINT_MAX > USHRT_MAX
140 struct low_bits_mask_t< ::std::numeric_limits<unsigned int>::digits >;
143 #if ULONG_MAX > UINT_MAX
145 struct low_bits_mask_t< ::std::numeric_limits<unsigned long>::digits >;
149 // From <boost/integer/static_log2.hpp> ------------------------------------//
151 template <static_log2_argument_type Value >
154 template <> struct static_log2<0u>;
157 // From <boost/integer/static_min_max.hpp> ---------------------------------//
159 template <static_min_max_signed_type Value1, static_min_max_signed_type Value2>
160 struct static_signed_min;
162 template <static_min_max_signed_type Value1, static_min_max_signed_type Value2>
163 struct static_signed_max;
165 template <static_min_max_unsigned_type Value1, static_min_max_unsigned_type Value2>
166 struct static_unsigned_min;
168 template <static_min_max_unsigned_type Value1, static_min_max_unsigned_type Value2>
169 struct static_unsigned_max;
174 #endif // BOOST_INTEGER_FWD_HPP