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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\numeric\interval\hw_rounding.hpp

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/* Boost interval/hw_rounding.hpp template implementation file
 *
 * Copyright 2002 Herv� Br�nnimann, Guillaume Melquiond, Sylvain Pion
 * Copyright 2005 Guillaume Melquiond
 *
 * 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)
 */

#ifndef BOOST_NUMERIC_INTERVAL_HW_ROUNDING_HPP
#define BOOST_NUMERIC_INTERVAL_HW_ROUNDING_HPP

#include <boost/numeric/interval/rounding.hpp>
#include <boost/numeric/interval/rounded_arith.hpp>

#define BOOST_NUMERIC_INTERVAL_NO_HARDWARE

// define appropriate specialization of rounding_control for built-in types
#if defined(__x86_64__) && defined(__USE_ISOC99)
#  include <boost/numeric/interval/detail/c99_rounding_control.hpp>
#elif defined(__i386__) || defined(_M_IX86) || defined(__BORLANDC__) || defined(_M_X64)
#  include <boost/numeric/interval/detail/x86_rounding_control.hpp>
#elif defined(powerpc) || defined(__powerpc__) || defined(__ppc__)
#  include <boost/numeric/interval/detail/ppc_rounding_control.hpp>
#elif defined(sparc) || defined(__sparc__)
#  include <boost/numeric/interval/detail/sparc_rounding_control.hpp>
#elif defined(alpha) || defined(__alpha__)
#  include <boost/numeric/interval/detail/alpha_rounding_control.hpp>
#elif defined(ia64) || defined(__ia64) || defined(__ia64__)
#  include <boost/numeric/interval/detail/ia64_rounding_control.hpp>
#endif

#if defined(BOOST_NUMERIC_INTERVAL_NO_HARDWARE) && (defined(__USE_ISOC99) || defined(__MSL__))
#  include <boost/numeric/interval/detail/c99_rounding_control.hpp>
#endif

#if defined(BOOST_NUMERIC_INTERVAL_NO_HARDWARE)
#  undef BOOST_NUMERIC_INTERVAL_NO_HARDWARE
#  error Boost.Numeric.Interval: Please specify rounding control mechanism.
#endif

namespace boost {
namespace numeric {
namespace interval_lib {

/*
 * Three specializations of rounded_math<T>
 */

template<>
struct rounded_math<float>
  : save_state<rounded_arith_opp<float> >
{};

template<>
struct rounded_math<double>
  : save_state<rounded_arith_opp<double> >
{};

template<>
struct rounded_math<long double>
  : save_state<rounded_arith_opp<long double> >
{};

} // namespace interval_lib
} // namespace numeric
} // namespace boost

#endif // BOOST_NUMERIC_INTERVAL_HW_ROUNDING_HPP

hw_rounding.hpp

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