comparison DEPENDENCIES/generic/include/boost/integer.hpp @ 16:2665513ce2d3

Add boost headers

+//  boost integer.hpp header file  -------------------------------------------//
+
+//  Copyright Beman Dawes and Daryle Walker 1999.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/integer for documentation.
+
+//  Revision History
+//   22 Sep 01  Added value-based integer templates. (Daryle Walker)
+//   01 Apr 01  Modified to use new <boost/limits.hpp> header. (John Maddock)
+//   30 Jul 00  Add typename syntax fix (Jens Maurer)
+//   28 Aug 99  Initial version
+
+#ifndef BOOST_INTEGER_HPP
+#define BOOST_INTEGER_HPP
+
+#include <boost/integer_fwd.hpp>  // self include
+
+#include <boost/integer_traits.hpp>  // for boost::::boost::integer_traits
+#include <boost/limits.hpp>          // for ::std::numeric_limits
+#include <boost/cstdint.hpp>         // for boost::int64_t and BOOST_NO_INTEGRAL_INT64_T
+#include <boost/static_assert.hpp>
+
+//
+// We simply cannot include this header on gcc without getting copious warnings of the kind:
+//
+// boost/integer.hpp:77:30: warning: use of C99 long long integer constant
+//
+// And yet there is no other reasonable implementation, so we declare this a system header
+// to suppress these warnings.
+//
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#pragma GCC system_header
+#endif
+
+namespace boost
+{
+
+  //  Helper templates  ------------------------------------------------------//
+
+  //  fast integers from least integers
+  //  int_fast_t<> works correctly for unsigned too, in spite of the name.
+  template< typename LeastInt >
+  struct int_fast_t 
+  { 
+     typedef LeastInt fast; 
+     typedef fast     type;
+  }; // imps may specialize
+
+  namespace detail{
+
+  //  convert category to type 
+  template< int Category > struct int_least_helper {}; // default is empty
+  template< int Category > struct uint_least_helper {}; // default is empty
+
+  //  specializatons: 1=long, 2=int, 3=short, 4=signed char,
+  //     6=unsigned long, 7=unsigned int, 8=unsigned short, 9=unsigned char
+  //  no specializations for 0 and 5: requests for a type > long are in error
+#ifdef BOOST_HAS_LONG_LONG
+  template<> struct int_least_helper<1> { typedef boost::long_long_type least; };
+#elif defined(BOOST_HAS_MS_INT64)
+  template<> struct int_least_helper<1> { typedef __int64 least; };
+#endif
+  template<> struct int_least_helper<2> { typedef long least; };
+  template<> struct int_least_helper<3> { typedef int least; };
+  template<> struct int_least_helper<4> { typedef short least; };
+  template<> struct int_least_helper<5> { typedef signed char least; };
+#ifdef BOOST_HAS_LONG_LONG
+  template<> struct uint_least_helper<1> { typedef boost::ulong_long_type least; };
+#elif defined(BOOST_HAS_MS_INT64)
+  template<> struct uint_least_helper<1> { typedef unsigned __int64 least; };
+#endif
+  template<> struct uint_least_helper<2> { typedef unsigned long least; };
+  template<> struct uint_least_helper<3> { typedef unsigned int least; };
+  template<> struct uint_least_helper<4> { typedef unsigned short least; };
+  template<> struct uint_least_helper<5> { typedef unsigned char least; };
+
+  template <int Bits>
+  struct exact_signed_base_helper{};
+  template <int Bits>
+  struct exact_unsigned_base_helper{};
+
+  template <> struct exact_signed_base_helper<sizeof(signed char)* CHAR_BIT> { typedef signed char exact; };
+  template <> struct exact_unsigned_base_helper<sizeof(unsigned char)* CHAR_BIT> { typedef unsigned char exact; };
+#if USHRT_MAX != UCHAR_MAX
+  template <> struct exact_signed_base_helper<sizeof(short)* CHAR_BIT> { typedef short exact; };
+  template <> struct exact_unsigned_base_helper<sizeof(unsigned short)* CHAR_BIT> { typedef unsigned short exact; };
+#endif
+#if UINT_MAX != USHRT_MAX
+  template <> struct exact_signed_base_helper<sizeof(int)* CHAR_BIT> { typedef int exact; };
+  template <> struct exact_unsigned_base_helper<sizeof(unsigned int)* CHAR_BIT> { typedef unsigned int exact; };
+#endif
+#if ULONG_MAX != UINT_MAX
+  template <> struct exact_signed_base_helper<sizeof(long)* CHAR_BIT> { typedef long exact; };
+  template <> struct exact_unsigned_base_helper<sizeof(unsigned long)* CHAR_BIT> { typedef unsigned long exact; };
+#endif
+#if defined(BOOST_HAS_LONG_LONG) &&\
+   ((defined(ULLONG_MAX) && (ULLONG_MAX != ULONG_MAX)) ||\
+    (defined(ULONG_LONG_MAX) && (ULONG_LONG_MAX != ULONG_MAX)) ||\
+    (defined(ULONGLONG_MAX) && (ULONGLONG_MAX != ULONG_MAX)) ||\
+    (defined(_ULLONG_MAX) && (_ULLONG_MAX != ULONG_MAX)))
+  template <> struct exact_signed_base_helper<sizeof(boost::long_long_type)* CHAR_BIT> { typedef boost::long_long_type exact; };
+  template <> struct exact_unsigned_base_helper<sizeof(boost::ulong_long_type)* CHAR_BIT> { typedef boost::ulong_long_type exact; };
+#endif
+
+
+  } // namespace detail
+
+  //  integer templates specifying number of bits  ---------------------------//
+
+  //  signed
+  template< int Bits >   // bits (including sign) required
+  struct int_t : public detail::exact_signed_base_helper<Bits>
+  {
+      BOOST_STATIC_ASSERT_MSG(Bits <= (int)(sizeof(boost::intmax_t) * CHAR_BIT),
+         "No suitable signed integer type with the requested number of bits is available.");
+      typedef typename detail::int_least_helper
+        <
+#ifdef BOOST_HAS_LONG_LONG
+          (Bits <= (int)(sizeof(boost::long_long_type) * CHAR_BIT)) +
+#else
+           1 +
+#endif
+          (Bits-1 <= ::std::numeric_limits<long>::digits) +
+          (Bits-1 <= ::std::numeric_limits<int>::digits) +
+          (Bits-1 <= ::std::numeric_limits<short>::digits) +
+          (Bits-1 <= ::std::numeric_limits<signed char>::digits)
+        >::least  least;
+      typedef typename int_fast_t<least>::type  fast;
+  };
+
+  //  unsigned
+  template< int Bits >   // bits required
+  struct uint_t : public detail::exact_unsigned_base_helper<Bits>
+  {
+     BOOST_STATIC_ASSERT_MSG(Bits <= (int)(sizeof(boost::uintmax_t) * CHAR_BIT),
+         "No suitable unsigned integer type with the requested number of bits is available.");
+#if (defined(__BORLANDC__) || defined(__CODEGEAR__)) && defined(BOOST_NO_INTEGRAL_INT64_T)
+     // It's really not clear why this workaround should be needed... shrug I guess!  JM
+     BOOST_STATIC_CONSTANT(int, s = 
+           6 +
+          (Bits <= ::std::numeric_limits<unsigned long>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned int>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned short>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned char>::digits));
+     typedef typename detail::int_least_helper< ::boost::uint_t<Bits>::s>::least least;
+#else
+      typedef typename detail::uint_least_helper
+        < 
+#ifdef BOOST_HAS_LONG_LONG
+          (Bits <= (int)(sizeof(boost::long_long_type) * CHAR_BIT)) +
+#else
+           1 +
+#endif
+          (Bits <= ::std::numeric_limits<unsigned long>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned int>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned short>::digits) +
+          (Bits <= ::std::numeric_limits<unsigned char>::digits)
+        >::least  least;
+#endif
+      typedef typename int_fast_t<least>::type  fast;
+      // int_fast_t<> works correctly for unsigned too, in spite of the name.
+  };
+
+  //  integer templates specifying extreme value  ----------------------------//
+
+  //  signed
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+  template< boost::long_long_type MaxValue >   // maximum value to require support
+#else
+  template< long MaxValue >   // maximum value to require support
+#endif
+  struct int_max_value_t 
+  {
+      typedef typename detail::int_least_helper
+        <
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+          (MaxValue <= ::boost::integer_traits<boost::long_long_type>::const_max) +
+#else
+           1 +
+#endif
+          (MaxValue <= ::boost::integer_traits<long>::const_max) +
+          (MaxValue <= ::boost::integer_traits<int>::const_max) +
+          (MaxValue <= ::boost::integer_traits<short>::const_max) +
+          (MaxValue <= ::boost::integer_traits<signed char>::const_max)
+        >::least  least;
+      typedef typename int_fast_t<least>::type  fast;
+  };
+
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+  template< boost::long_long_type MinValue >   // minimum value to require support
+#else
+  template< long MinValue >   // minimum value to require support
+#endif
+  struct int_min_value_t 
+  {
+      typedef typename detail::int_least_helper
+        <
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+          (MinValue >= ::boost::integer_traits<boost::long_long_type>::const_min) +
+#else
+           1 +
+#endif
+          (MinValue >= ::boost::integer_traits<long>::const_min) +
+          (MinValue >= ::boost::integer_traits<int>::const_min) +
+          (MinValue >= ::boost::integer_traits<short>::const_min) +
+          (MinValue >= ::boost::integer_traits<signed char>::const_min)
+        >::least  least;
+      typedef typename int_fast_t<least>::type  fast;
+  };
+
+  //  unsigned
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+  template< boost::ulong_long_type MaxValue >   // minimum value to require support
+#else
+  template< unsigned long MaxValue >   // minimum value to require support
+#endif
+  struct uint_value_t 
+  {
+#if (defined(__BORLANDC__) || defined(__CODEGEAR__))
+     // It's really not clear why this workaround should be needed... shrug I guess!  JM
+#if defined(BOOST_NO_INTEGRAL_INT64_T)
+      BOOST_STATIC_CONSTANT(unsigned, which = 
+           1 +
+          (MaxValue <= ::boost::integer_traits<unsigned long>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned int>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned short>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned char>::const_max));
+      typedef typename detail::int_least_helper< ::boost::uint_value_t<MaxValue>::which>::least least;
+#else // BOOST_NO_INTEGRAL_INT64_T
+      BOOST_STATIC_CONSTANT(unsigned, which = 
+           1 +
+          (MaxValue <= ::boost::integer_traits<boost::ulong_long_type>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned long>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned int>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned short>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned char>::const_max));
+      typedef typename detail::uint_least_helper< ::boost::uint_value_t<MaxValue>::which>::least least;
+#endif // BOOST_NO_INTEGRAL_INT64_T
+#else
+      typedef typename detail::uint_least_helper
+        < 
+#if !defined(BOOST_NO_INTEGRAL_INT64_T) && defined(BOOST_HAS_LONG_LONG)
+          (MaxValue <= ::boost::integer_traits<boost::ulong_long_type>::const_max) +
+#else
+           1 +
+#endif
+          (MaxValue <= ::boost::integer_traits<unsigned long>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned int>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned short>::const_max) +
+          (MaxValue <= ::boost::integer_traits<unsigned char>::const_max)
+        >::least  least;
+#endif
+      typedef typename int_fast_t<least>::type  fast;
+  };
+
+
+} // namespace boost
+
+#endif  // BOOST_INTEGER_HPP