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int_encoding.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\typeof\int_encoding.hpp
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// Copyright (C) 2004 Arkadiy Vertleyb // Use, modification and distribution is subject to the Boost Software // License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt) #ifndef BOOST_TYPEOF_INT_ENCODING_HPP_INCLUDED #define BOOST_TYPEOF_INT_ENCODING_HPP_INCLUDED #include
#include
#include
namespace boost { namespace type_of { template
struct get_unsigned { typedef T type; }; template<> struct get_unsigned
{ typedef unsigned char type; }; template<> struct get_unsigned
{ typedef unsigned char type; }; template<> struct get_unsigned
{ typedef unsigned short type; }; template<> struct get_unsigned
{ typedef unsigned int type; }; template<> struct get_unsigned
{ typedef unsigned long type; }; ////////////////////////// template
struct pack { BOOST_STATIC_CONSTANT(std::size_t , value=((n + 1) * 2 + (Overflow ? 1 : 0))); }; template
struct unpack { BOOST_STATIC_CONSTANT(std::size_t, value = (m / 2) - 1); BOOST_STATIC_CONSTANT(std::size_t, overflow = (m % 2 == 1)); }; //////////////////////////////// template
= 0x3fffffff)> struct encode_size_t : push_back< V, boost::mpl::size_t
::value> > {}; template
struct encode_size_t
: push_back
::value> >::type, boost::mpl::size_t
> {}; template
struct encode_integral : encode_size_t< V, (typename get_unsigned
::type)n,(((typename get_unsigned
::type)n)>=0x3fffffff) > {}; template
struct encode_integral
: encode_size_t< V, b?1:0, false> {}; /////////////////////////// template
struct decode_size_t; template
struct decode_size_t
{ BOOST_STATIC_CONSTANT(std::size_t,value = n); typedef Iter iter; }; template
struct decode_size_t
{ BOOST_STATIC_CONSTANT(std::size_t,m = Iter::type::value); BOOST_STATIC_CONSTANT(std::size_t,value = (std::size_t)m * 0x3ffffffe + n); typedef typename Iter::next iter; }; template
struct decode_integral { typedef decode_integral
self_t; BOOST_STATIC_CONSTANT(std::size_t,m = Iter::type::value); BOOST_STATIC_CONSTANT(std::size_t,n = unpack
::value); BOOST_STATIC_CONSTANT(std::size_t,overflow = unpack
::overflow); typedef typename Iter::next nextpos; static const T value = (T)(std::size_t)decode_size_t
::value; typedef typename decode_size_t
::iter iter; }; }}//namespace #endif//BOOST_TYPEOF_INT_ENCODING_HPP_INCLUDED
int_encoding.hpp
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