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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7593 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
145 lines
3.7 KiB
C++
145 lines
3.7 KiB
C++
// Boost.Units - A C++ library for zero-overhead dimensional analysis and
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// unit/quantity manipulation and conversion
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//
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// Copyright (C) 2003-2008 Matthias Christian Schabel
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// Copyright (C) 2008 Steven Watanabe
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_UNITS_SCALED_BASE_UNIT_HPP_INCLUDED
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#define BOOST_UNITS_SCALED_BASE_UNIT_HPP_INCLUDED
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#include <string>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/less.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/units/config.hpp>
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#include <boost/units/dimension.hpp>
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#include <boost/units/static_rational.hpp>
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#include <boost/units/units_fwd.hpp>
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namespace boost {
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namespace units {
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template<class T>
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struct heterogeneous_system;
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template<class T, class D, class Scale>
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struct heterogeneous_system_impl;
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template<class T, class E>
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struct heterogeneous_system_dim;
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template<class T>
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struct base_unit_info;
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/// INTERNAL ONLY
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struct scaled_base_unit_tag {};
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template<class S, class Scale>
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struct scaled_base_unit
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{
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/// INTERNAL ONLY
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typedef void boost_units_is_base_unit_type;
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typedef scaled_base_unit type;
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typedef scaled_base_unit_tag tag;
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typedef S system_type;
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typedef Scale scale_type;
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typedef typename S::dimension_type dimension_type;
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#ifdef BOOST_UNITS_DOXYGEN
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typedef detail::unspecified unit_type;
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#else
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typedef unit<
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dimension_type,
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heterogeneous_system<
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heterogeneous_system_impl<
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list<
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heterogeneous_system_dim<scaled_base_unit,static_rational<1> >,
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dimensionless_type
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>,
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dimension_type,
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dimensionless_type
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>
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>
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> unit_type;
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#endif
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static std::string symbol()
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{
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return(Scale::symbol() + base_unit_info<S>::symbol());
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}
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static std::string name()
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{
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return(Scale::name() + base_unit_info<S>::name());
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}
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};
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} // namespace units
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} // namespace boost
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#if BOOST_UNITS_HAS_BOOST_TYPEOF
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#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
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BOOST_TYPEOF_REGISTER_TEMPLATE(boost::units::scaled_base_unit, (class)(class))
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#endif
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namespace boost {
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#ifndef BOOST_UNITS_DOXYGEN
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namespace mpl {
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/// INTERNAL ONLY
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template<class Tag>
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struct less_impl<boost::units::scaled_base_unit_tag, Tag>
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{
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template<class T0, class T1>
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struct apply : mpl::bool_<
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mpl::less<typename T0::system_type, T1>::value ||
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(boost::is_same<typename T0::system_type, T1>::value && ((T0::scale_type::exponent::Numerator) < 0)) > {};
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};
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/// INTERNAL ONLY
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template<class Tag>
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struct less_impl<Tag, boost::units::scaled_base_unit_tag>
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{
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template<class T0, class T1>
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struct apply : mpl::bool_<
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mpl::less<T0, typename T1::system_type>::value ||
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(boost::is_same<T0, typename T1::system_type>::value && ((T1::scale_type::exponent::Numerator) > 0)) > {};
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};
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/// INTERNAL ONLY
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template<>
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struct less_impl<boost::units::scaled_base_unit_tag, boost::units::scaled_base_unit_tag>
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{
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template<class T0, class T1>
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struct apply : mpl::bool_<
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mpl::less<typename T0::system_type, typename T1::system_type>::value ||
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((boost::is_same<typename T0::system_type, typename T1::system_type>::value) &&
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((T0::scale_type::base) < (T1::scale_type::base) ||
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((T0::scale_type::base) == (T1::scale_type::base) &&
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mpl::less<typename T0::scale_type::exponent, typename T1::scale_type::exponent>::value))) > {};
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};
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} // namespace mpl
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#endif
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} // namespace boost
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#endif
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