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1280 lines
41 KiB
1280 lines
41 KiB
// 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) 2007-2008 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_QUANTITY_HPP |
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#define BOOST_UNITS_QUANTITY_HPP |
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#include <algorithm> |
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#include <boost/config.hpp> |
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#include <boost/static_assert.hpp> |
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#include <boost/mpl/bool.hpp> |
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#include <boost/mpl/and.hpp> |
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#include <boost/mpl/not.hpp> |
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#include <boost/mpl/or.hpp> |
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#include <boost/mpl/assert.hpp> |
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#include <boost/utility/enable_if.hpp> |
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#include <boost/type_traits/is_arithmetic.hpp> |
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#include <boost/type_traits/is_convertible.hpp> |
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#include <boost/type_traits/is_integral.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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#include <boost/units/conversion.hpp> |
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#include <boost/units/dimensionless_type.hpp> |
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#include <boost/units/homogeneous_system.hpp> |
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#include <boost/units/operators.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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#include <boost/units/detail/dimensionless_unit.hpp> |
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namespace boost { |
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namespace units { |
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namespace detail { |
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template<class T, class Enable = void> |
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struct is_base_unit : mpl::false_ {}; |
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template<class T> |
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struct is_base_unit<T, typename T::boost_units_is_base_unit_type> : mpl::true_ {}; |
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template<class Source, class Destination> |
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struct is_narrowing_conversion_impl : mpl::bool_<(sizeof(Source) > sizeof(Destination))> {}; |
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template<class Source, class Destination> |
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struct is_non_narrowing_conversion : |
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mpl::and_< |
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boost::is_convertible<Source, Destination>, |
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mpl::not_< |
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mpl::and_< |
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boost::is_arithmetic<Source>, |
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boost::is_arithmetic<Destination>, |
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mpl::or_< |
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mpl::and_< |
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is_integral<Destination>, |
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mpl::not_<is_integral<Source> > |
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>, |
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is_narrowing_conversion_impl<Source, Destination> |
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> |
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> |
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> |
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> |
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{}; |
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template<> |
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struct is_non_narrowing_conversion<long double, double> : mpl::false_ {}; |
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// msvc 7.1 needs extra disambiguation |
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template<class T, class U> |
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struct disable_if_is_same |
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{ |
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typedef void type; |
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}; |
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template<class T> |
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struct disable_if_is_same<T, T> {}; |
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} |
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/// class declaration |
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template<class Unit,class Y> |
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class quantity |
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{ |
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// base units are not the same as units. |
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BOOST_MPL_ASSERT_NOT((detail::is_base_unit<Unit>)); |
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enum { force_instantiation_of_unit = sizeof(Unit) }; |
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typedef void (quantity::*unspecified_null_pointer_constant_type)(int*******); |
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public: |
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typedef quantity<Unit,Y> this_type; |
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typedef Y value_type; |
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typedef Unit unit_type; |
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BOOST_CONSTEXPR quantity() : val_() |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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BOOST_CONSTEXPR quantity(unspecified_null_pointer_constant_type) : val_() |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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BOOST_CONSTEXPR quantity(const this_type& source) : val_(source.val_) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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// Need to make sure that the destructor of |
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// Unit which contains the checking is instantiated, |
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// on sun. |
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#ifdef __SUNPRO_CC |
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~quantity() { |
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unit_type force_unit_instantiation; |
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} |
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#endif |
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//~quantity() { } |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const this_type& source) |
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{ |
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val_ = source.val_; |
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return *this; |
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} |
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#ifndef BOOST_NO_SFINAE |
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/// implicit conversion between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CONSTEXPR quantity(const quantity<Unit,YY>& source, |
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typename boost::enable_if<detail::is_non_narrowing_conversion<YY, Y> >::type* = 0) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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/// implicit conversion between value types is not allowed if not allowed for value types themselves |
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template<class YY> |
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explicit BOOST_CONSTEXPR quantity(const quantity<Unit,YY>& source, |
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typename boost::disable_if<detail::is_non_narrowing_conversion<YY, Y> >::type* = 0) : |
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val_(static_cast<Y>(source.value())) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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#else |
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/// implicit conversion between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CONSTEXPR quantity(const quantity<Unit,YY>& source) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY, Y>::value == true)); |
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} |
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#endif |
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/// implicit assignment between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const quantity<Unit,YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY, Y>::value == true)); |
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*this = this_type(source); |
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return *this; |
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} |
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#ifndef BOOST_NO_SFINAE |
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/// explicit conversion between different unit systems is allowed if implicit conversion is disallowed |
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template<class Unit2,class YY> |
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explicit |
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BOOST_CONSTEXPR quantity(const quantity<Unit2,YY>& source, |
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typename boost::disable_if< |
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mpl::and_< |
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//is_implicitly_convertible should be undefined when the |
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//units are not convertible at all |
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typename is_implicitly_convertible<Unit2,Unit>::type, |
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detail::is_non_narrowing_conversion<YY, Y> |
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>, |
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typename detail::disable_if_is_same<Unit, Unit2>::type |
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>::type* = 0) |
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: val_(conversion_helper<quantity<Unit2,YY>,this_type>::convert(source).value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY,Y>::value == true)); |
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} |
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/// implicit conversion between different unit systems is allowed if each fundamental dimension is implicitly convertible |
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template<class Unit2,class YY> |
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BOOST_CONSTEXPR quantity(const quantity<Unit2,YY>& source, |
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typename boost::enable_if< |
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mpl::and_< |
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typename is_implicitly_convertible<Unit2,Unit>::type, |
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detail::is_non_narrowing_conversion<YY, Y> |
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>, |
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typename detail::disable_if_is_same<Unit, Unit2>::type |
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>::type* = 0) |
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: val_(conversion_helper<quantity<Unit2,YY>,this_type>::convert(source).value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY,Y>::value == true)); |
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} |
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#else |
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/// without SFINAE we can't distinguish between explicit and implicit conversions so |
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/// the conversion is always explicit |
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template<class Unit2,class YY> |
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explicit BOOST_CONSTEXPR quantity(const quantity<Unit2,YY>& source) |
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: val_(conversion_helper<quantity<Unit2,YY>,this_type>::convert(source).value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY,Y>::value == true)); |
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} |
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#endif |
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/// implicit assignment between different unit systems is allowed if each fundamental dimension is implicitly convertible |
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template<class Unit2,class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const quantity<Unit2,YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((is_implicitly_convertible<Unit2,unit_type>::value == true)); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY,Y>::value == true)); |
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*this = this_type(source); |
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return *this; |
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} |
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BOOST_CONSTEXPR const value_type& value() const { return val_; } ///< constant accessor to value |
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///< can add a quantity of the same type if add_typeof_helper<value_type,value_type>::type is convertible to value_type |
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template<class Unit2, class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator+=(const quantity<Unit2, YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_same<typename add_typeof_helper<Unit, Unit2>::type, Unit>::value)); |
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val_ += source.value(); |
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return *this; |
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} |
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///< can subtract a quantity of the same type if subtract_typeof_helper<value_type,value_type>::type is convertible to value_type |
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template<class Unit2, class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator-=(const quantity<Unit2, YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_same<typename subtract_typeof_helper<Unit, Unit2>::type, Unit>::value)); |
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val_ -= source.value(); |
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return *this; |
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} |
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template<class Unit2, class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator*=(const quantity<Unit2, YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_same<typename multiply_typeof_helper<Unit, Unit2>::type, Unit>::value)); |
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val_ *= source.value(); |
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return *this; |
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} |
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template<class Unit2, class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator/=(const quantity<Unit2, YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_same<typename divide_typeof_helper<Unit, Unit2>::type, Unit>::value)); |
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val_ /= source.value(); |
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return *this; |
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} |
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///< can multiply a quantity by a scalar value_type if multiply_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator*=(const value_type& source) { val_ *= source; return *this; } |
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///< can divide a quantity by a scalar value_type if divide_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator/=(const value_type& source) { val_ /= source; return *this; } |
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/// Construct quantity directly from @c value_type (potentially dangerous). |
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static BOOST_CONSTEXPR this_type from_value(const value_type& val) { return this_type(val, 0); } |
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protected: |
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explicit BOOST_CONSTEXPR quantity(const value_type& val, int) : val_(val) { } |
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private: |
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value_type val_; |
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}; |
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/// Specialization for dimensionless quantities. Implicit conversions between |
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/// unit systems are allowed because all dimensionless quantities are equivalent. |
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/// Implicit construction and assignment from and conversion to @c value_type is |
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/// also allowed. |
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template<class System,class Y> |
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class quantity<BOOST_UNITS_DIMENSIONLESS_UNIT(System),Y> |
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{ |
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public: |
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typedef quantity<unit<dimensionless_type,System>,Y> this_type; |
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typedef Y value_type; |
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typedef System system_type; |
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typedef dimensionless_type dimension_type; |
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typedef unit<dimension_type,system_type> unit_type; |
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BOOST_CONSTEXPR quantity() : val_() |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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/// construction from raw @c value_type is allowed |
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BOOST_CONSTEXPR quantity(value_type val) : val_(val) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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BOOST_CONSTEXPR quantity(const this_type& source) : val_(source.val_) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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//~quantity() { } |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const this_type& source) |
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{ |
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val_ = source.val_; |
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return *this; |
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} |
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#ifndef BOOST_NO_SFINAE |
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/// implicit conversion between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CONSTEXPR quantity(const quantity<unit<dimension_type,system_type>,YY>& source, |
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typename boost::enable_if<detail::is_non_narrowing_conversion<YY, Y> >::type* = 0) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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/// implicit conversion between value types is not allowed if not allowed for value types themselves |
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template<class YY> |
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explicit BOOST_CONSTEXPR quantity(const quantity<unit<dimension_type,system_type>,YY>& source, |
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typename boost::disable_if<detail::is_non_narrowing_conversion<YY, Y> >::type* = 0) : |
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val_(static_cast<Y>(source.value())) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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#else |
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/// implicit conversion between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CONSTEXPR quantity(const quantity<unit<dimension_type,system_type>,YY>& source) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY, Y>::value == true)); |
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} |
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#endif |
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/// implicit assignment between value types is allowed if allowed for value types themselves |
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template<class YY> |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const quantity<unit<dimension_type,system_type>,YY>& source) |
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{ |
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BOOST_STATIC_ASSERT((boost::is_convertible<YY,Y>::value == true)); |
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*this = this_type(source); |
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return *this; |
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} |
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#if 1 |
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/// implicit conversion between different unit systems is allowed |
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template<class System2, class Y2> |
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BOOST_CONSTEXPR quantity(const quantity<unit<dimensionless_type, System2>,Y2>& source, |
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#ifdef __SUNPRO_CC |
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typename boost::enable_if< |
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boost::mpl::and_< |
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detail::is_non_narrowing_conversion<Y2, Y>, |
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detail::is_dimensionless_system<System2> |
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> |
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>::type* = 0 |
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#else |
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typename boost::enable_if<detail::is_non_narrowing_conversion<Y2, Y> >::type* = 0, |
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typename detail::disable_if_is_same<System, System2>::type* = 0, |
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typename boost::enable_if<detail::is_dimensionless_system<System2> >::type* = 0 |
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#endif |
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) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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/// implicit conversion between different unit systems is allowed |
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template<class System2, class Y2> |
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explicit BOOST_CONSTEXPR quantity(const quantity<unit<dimensionless_type, System2>,Y2>& source, |
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#ifdef __SUNPRO_CC |
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typename boost::enable_if< |
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boost::mpl::and_< |
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boost::mpl::not_<detail::is_non_narrowing_conversion<Y2, Y> >, |
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detail::is_dimensionless_system<System2> |
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> |
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>::type* = 0 |
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#else |
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typename boost::disable_if<detail::is_non_narrowing_conversion<Y2, Y> >::type* = 0, |
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typename detail::disable_if_is_same<System, System2>::type* = 0, |
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typename boost::enable_if<detail::is_dimensionless_system<System2> >::type* = 0 |
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#endif |
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) : |
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val_(static_cast<Y>(source.value())) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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#else |
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/// implicit conversion between different unit systems is allowed |
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template<class System2, class Y2> |
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BOOST_CONSTEXPR quantity(const quantity<unit<dimensionless_type,homogeneous_system<System2> >,Y2>& source) : |
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val_(source.value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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BOOST_STATIC_ASSERT((boost::is_convertible<Y2, Y>::value == true)); |
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} |
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#endif |
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/// conversion between different unit systems is explicit when |
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/// the units are not equivalent. |
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template<class System2, class Y2> |
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explicit BOOST_CONSTEXPR quantity(const quantity<unit<dimensionless_type, System2>,Y2>& source, |
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typename boost::disable_if<detail::is_dimensionless_system<System2> >::type* = 0) : |
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val_(conversion_helper<quantity<unit<dimensionless_type, System2>,Y2>, this_type>::convert(source).value()) |
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{ |
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BOOST_UNITS_CHECK_LAYOUT_COMPATIBILITY(this_type, Y); |
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} |
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#ifndef __SUNPRO_CC |
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/// implicit assignment between different unit systems is allowed |
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template<class System2> |
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BOOST_CXX14_CONSTEXPR this_type& operator=(const quantity<BOOST_UNITS_DIMENSIONLESS_UNIT(System2),Y>& source) |
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{ |
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*this = this_type(source); |
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return *this; |
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} |
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#endif |
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/// implicit conversion to @c value_type is allowed |
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BOOST_CONSTEXPR operator value_type() const { return val_; } |
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BOOST_CONSTEXPR const value_type& value() const { return val_; } ///< constant accessor to value |
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///< can add a quantity of the same type if add_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator+=(const this_type& source) { val_ += source.val_; return *this; } |
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///< can subtract a quantity of the same type if subtract_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator-=(const this_type& source) { val_ -= source.val_; return *this; } |
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///< can multiply a quantity by a scalar value_type if multiply_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator*=(const value_type& val) { val_ *= val; return *this; } |
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///< can divide a quantity by a scalar value_type if divide_typeof_helper<value_type,value_type>::type is convertible to value_type |
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BOOST_CXX14_CONSTEXPR this_type& operator/=(const value_type& val) { val_ /= val; return *this; } |
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/// Construct quantity directly from @c value_type. |
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static BOOST_CONSTEXPR this_type from_value(const value_type& val) { return this_type(val); } |
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private: |
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value_type val_; |
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}; |
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#ifdef BOOST_MSVC |
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// HACK: For some obscure reason msvc 8.0 needs these specializations |
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template<class System, class T> |
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class quantity<unit<int, System>, T> {}; |
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template<class T> |
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class quantity<int, T> {}; |
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#endif |
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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::quantity, 2) |
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#endif |
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namespace boost { |
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namespace units { |
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namespace detail { |
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/// helper class for quantity_cast |
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template<class X,class Y> struct quantity_cast_helper; |
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/// specialization for casting to the value type |
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template<class Y,class X,class Unit> |
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struct quantity_cast_helper<Y,quantity<Unit,X> > |
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{ |
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typedef Y type; |
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BOOST_CONSTEXPR type operator()(quantity<Unit,X>& source) const { return const_cast<X&>(source.value()); } |
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}; |
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/// specialization for casting to the value type |
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template<class Y,class X,class Unit> |
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struct quantity_cast_helper<Y,const quantity<Unit,X> > |
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{ |
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typedef Y type; |
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BOOST_CONSTEXPR type operator()(const quantity<Unit,X>& source) const { return source.value(); } |
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}; |
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} // namespace detail |
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/// quantity_cast provides mutating access to underlying quantity value_type |
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template<class X,class Y> |
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inline |
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BOOST_CONSTEXPR |
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X |
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quantity_cast(Y& source) |
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{ |
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return detail::quantity_cast_helper<X,Y>()(source); |
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} |
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template<class X,class Y> |
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inline |
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BOOST_CONSTEXPR |
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X |
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quantity_cast(const Y& source) |
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{ |
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return detail::quantity_cast_helper<X,const Y>()(source); |
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} |
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|
/// swap quantities |
|
template<class Unit,class Y> |
|
inline void swap(quantity<Unit,Y>& lhs, quantity<Unit,Y>& rhs) |
|
{ |
|
using std::swap; |
|
swap(quantity_cast<Y&>(lhs),quantity_cast<Y&>(rhs)); |
|
} |
|
|
|
/// specialize unary plus typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit,class Y> |
|
struct unary_plus_typeof_helper< quantity<Unit,Y> > |
|
{ |
|
typedef typename unary_plus_typeof_helper<Y>::type value_type; |
|
typedef typename unary_plus_typeof_helper<Unit>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// specialize unary minus typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit,class Y> |
|
struct unary_minus_typeof_helper< quantity<Unit,Y> > |
|
{ |
|
typedef typename unary_minus_typeof_helper<Y>::type value_type; |
|
typedef typename unary_minus_typeof_helper<Unit>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// specialize add typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
struct add_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> > |
|
{ |
|
typedef typename add_typeof_helper<X,Y>::type value_type; |
|
typedef typename add_typeof_helper<Unit1,Unit2>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// for sun CC we need to invoke SFINAE at |
|
/// the top level, otherwise it will silently |
|
/// return int. |
|
template<class Dim1, class System1, |
|
class Dim2, class System2, |
|
class X, |
|
class Y> |
|
struct add_typeof_helper< quantity<unit<Dim1, System1>,X>,quantity<unit<Dim2, System2>,Y> > |
|
{ |
|
}; |
|
|
|
template<class Dim, |
|
class System, |
|
class X, |
|
class Y> |
|
struct add_typeof_helper< quantity<unit<Dim, System>,X>,quantity<unit<Dim, System>,Y> > |
|
{ |
|
typedef typename add_typeof_helper<X,Y>::type value_type; |
|
typedef unit<Dim, System> unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// specialize subtract typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
struct subtract_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> > |
|
{ |
|
typedef typename subtract_typeof_helper<X,Y>::type value_type; |
|
typedef typename subtract_typeof_helper<Unit1,Unit2>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
// Force adding different units to fail on sun. |
|
template<class Dim1, class System1, |
|
class Dim2, class System2, |
|
class X, |
|
class Y> |
|
struct subtract_typeof_helper< quantity<unit<Dim1, System1>,X>,quantity<unit<Dim2, System2>,Y> > |
|
{ |
|
}; |
|
|
|
template<class Dim, |
|
class System, |
|
class X, |
|
class Y> |
|
struct subtract_typeof_helper< quantity<unit<Dim, System>,X>,quantity<unit<Dim, System>,Y> > |
|
{ |
|
typedef typename subtract_typeof_helper<X,Y>::type value_type; |
|
typedef unit<Dim, System> unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// scalar times unit typeof helper |
|
/// INTERNAL ONLY |
|
template<class System, |
|
class Dim, |
|
class X> |
|
struct multiply_typeof_helper< X,unit<Dim,System> > |
|
{ |
|
typedef X value_type; |
|
typedef unit<Dim,System> unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// unit times scalar typeof helper |
|
/// INTERNAL ONLY |
|
template<class System, |
|
class Dim, |
|
class X> |
|
struct multiply_typeof_helper< unit<Dim,System>,X > |
|
{ |
|
typedef X value_type; |
|
typedef unit<Dim,System> unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// scalar times quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X, |
|
class Y> |
|
struct multiply_typeof_helper< X,quantity<Unit,Y> > |
|
{ |
|
typedef typename multiply_typeof_helper<X,Y>::type value_type; |
|
typedef Unit unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// disambiguate |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class Y> |
|
struct multiply_typeof_helper< one,quantity<Unit,Y> > |
|
{ |
|
typedef quantity<Unit,Y> type; |
|
}; |
|
|
|
/// quantity times scalar typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X, |
|
class Y> |
|
struct multiply_typeof_helper< quantity<Unit,X>,Y > |
|
{ |
|
typedef typename multiply_typeof_helper<X,Y>::type value_type; |
|
typedef Unit unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// disambiguate |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X> |
|
struct multiply_typeof_helper< quantity<Unit,X>,one > |
|
{ |
|
typedef quantity<Unit,X> type; |
|
}; |
|
|
|
/// unit times quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class System, |
|
class Dim, |
|
class X> |
|
struct multiply_typeof_helper< unit<Dim,System>,quantity<Unit,X> > |
|
{ |
|
typedef X value_type; |
|
typedef typename multiply_typeof_helper< unit<Dim,System>,Unit >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// quantity times unit typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class System, |
|
class Dim, |
|
class X> |
|
struct multiply_typeof_helper< quantity<Unit,X>,unit<Dim,System> > |
|
{ |
|
typedef X value_type; |
|
typedef typename multiply_typeof_helper< Unit,unit<Dim,System> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// quantity times quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
struct multiply_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> > |
|
{ |
|
typedef typename multiply_typeof_helper<X,Y>::type value_type; |
|
typedef typename multiply_typeof_helper<Unit1,Unit2>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// scalar divided by unit typeof helper |
|
/// INTERNAL ONLY |
|
template<class System, |
|
class Dim, |
|
class X> |
|
struct divide_typeof_helper< X,unit<Dim,System> > |
|
{ |
|
typedef X value_type; |
|
typedef typename power_typeof_helper< unit<Dim,System>,static_rational<-1> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// unit divided by scalar typeof helper |
|
/// INTERNAL ONLY |
|
template<class System, |
|
class Dim, |
|
class X> |
|
struct divide_typeof_helper< unit<Dim,System>,X > |
|
{ |
|
typedef typename divide_typeof_helper<X,X>::type value_type; |
|
typedef unit<Dim,System> unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// scalar divided by quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X, |
|
class Y> |
|
struct divide_typeof_helper< X,quantity<Unit,Y> > |
|
{ |
|
typedef typename divide_typeof_helper<X,Y>::type value_type; |
|
typedef typename power_typeof_helper< Unit,static_rational<-1> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// disambiguate |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class Y> |
|
struct divide_typeof_helper< one,quantity<Unit,Y> > |
|
{ |
|
typedef quantity<Unit,Y> type; |
|
}; |
|
|
|
/// quantity divided by scalar typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X, |
|
class Y> |
|
struct divide_typeof_helper< quantity<Unit,X>,Y > |
|
{ |
|
typedef typename divide_typeof_helper<X,Y>::type value_type; |
|
typedef Unit unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// disambiguate |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class X> |
|
struct divide_typeof_helper< quantity<Unit,X>,one > |
|
{ |
|
typedef quantity<Unit,X> type; |
|
}; |
|
|
|
/// unit divided by quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class System, |
|
class Dim, |
|
class X> |
|
struct divide_typeof_helper< unit<Dim,System>,quantity<Unit,X> > |
|
{ |
|
typedef typename divide_typeof_helper<X,X>::type value_type; |
|
typedef typename divide_typeof_helper< unit<Dim,System>,Unit >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// quantity divided by unit typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit, |
|
class System, |
|
class Dim, |
|
class X> |
|
struct divide_typeof_helper< quantity<Unit,X>,unit<Dim,System> > |
|
{ |
|
typedef X value_type; |
|
typedef typename divide_typeof_helper< Unit,unit<Dim,System> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// quantity divided by quantity typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
struct divide_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> > |
|
{ |
|
typedef typename divide_typeof_helper<X,Y>::type value_type; |
|
typedef typename divide_typeof_helper<Unit1,Unit2>::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
}; |
|
|
|
/// specialize power typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit,long N,long D,class Y> |
|
struct power_typeof_helper< quantity<Unit,Y>,static_rational<N,D> > |
|
{ |
|
typedef typename power_typeof_helper<Y,static_rational<N,D> >::type value_type; |
|
typedef typename power_typeof_helper<Unit,static_rational<N,D> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
|
|
static BOOST_CONSTEXPR type value(const quantity<Unit,Y>& x) |
|
{ |
|
return type::from_value(power_typeof_helper<Y,static_rational<N,D> >::value(x.value())); |
|
} |
|
}; |
|
|
|
/// specialize root typeof helper |
|
/// INTERNAL ONLY |
|
template<class Unit,long N,long D,class Y> |
|
struct root_typeof_helper< quantity<Unit,Y>,static_rational<N,D> > |
|
{ |
|
typedef typename root_typeof_helper<Y,static_rational<N,D> >::type value_type; |
|
typedef typename root_typeof_helper<Unit,static_rational<N,D> >::type unit_type; |
|
typedef quantity<unit_type,value_type> type; |
|
|
|
static BOOST_CONSTEXPR type value(const quantity<Unit,Y>& x) |
|
{ |
|
return type::from_value(root_typeof_helper<Y,static_rational<N,D> >::value(x.value())); |
|
} |
|
}; |
|
|
|
/// runtime unit times scalar |
|
/// INTERNAL ONLY |
|
template<class System, |
|
class Dim, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< unit<Dim,System>,Y >::type |
|
operator*(const unit<Dim,System>&,const Y& rhs) |
|
{ |
|
typedef typename multiply_typeof_helper< unit<Dim,System>,Y >::type type; |
|
|
|
return type::from_value(rhs); |
|
} |
|
|
|
/// runtime unit divided by scalar |
|
template<class System, |
|
class Dim, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< unit<Dim,System>,Y >::type |
|
operator/(const unit<Dim,System>&,const Y& rhs) |
|
{ |
|
typedef typename divide_typeof_helper<unit<Dim,System>,Y>::type type; |
|
|
|
return type::from_value(Y(1)/rhs); |
|
} |
|
|
|
/// runtime scalar times unit |
|
template<class System, |
|
class Dim, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< Y,unit<Dim,System> >::type |
|
operator*(const Y& lhs,const unit<Dim,System>&) |
|
{ |
|
typedef typename multiply_typeof_helper< Y,unit<Dim,System> >::type type; |
|
|
|
return type::from_value(lhs); |
|
} |
|
|
|
/// runtime scalar divided by unit |
|
template<class System, |
|
class Dim, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< Y,unit<Dim,System> >::type |
|
operator/(const Y& lhs,const unit<Dim,System>&) |
|
{ |
|
typedef typename divide_typeof_helper< Y,unit<Dim,System> >::type type; |
|
|
|
return type::from_value(lhs); |
|
} |
|
|
|
///// runtime quantity times scalar |
|
//template<class Unit, |
|
// class X, |
|
// class Y> |
|
//inline |
|
//BOOST_CONSTEXPR |
|
//typename multiply_typeof_helper< quantity<Unit,X>,Y >::type |
|
//operator*(const quantity<Unit,X>& lhs,const Y& rhs) |
|
//{ |
|
// typedef typename multiply_typeof_helper< quantity<Unit,X>,Y >::type type; |
|
// |
|
// return type::from_value(lhs.value()*rhs); |
|
//} |
|
// |
|
///// runtime scalar times quantity |
|
//template<class Unit, |
|
// class X, |
|
// class Y> |
|
//inline |
|
//BOOST_CONSTEXPR |
|
//typename multiply_typeof_helper< X,quantity<Unit,Y> >::type |
|
//operator*(const X& lhs,const quantity<Unit,Y>& rhs) |
|
//{ |
|
// typedef typename multiply_typeof_helper< X,quantity<Unit,Y> >::type type; |
|
// |
|
// return type::from_value(lhs*rhs.value()); |
|
//} |
|
|
|
/// runtime quantity times scalar |
|
template<class Unit, |
|
class X> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< quantity<Unit,X>,X >::type |
|
operator*(const quantity<Unit,X>& lhs,const X& rhs) |
|
{ |
|
typedef typename multiply_typeof_helper< quantity<Unit,X>,X >::type type; |
|
|
|
return type::from_value(lhs.value()*rhs); |
|
} |
|
|
|
/// runtime scalar times quantity |
|
template<class Unit, |
|
class X> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< X,quantity<Unit,X> >::type |
|
operator*(const X& lhs,const quantity<Unit,X>& rhs) |
|
{ |
|
typedef typename multiply_typeof_helper< X,quantity<Unit,X> >::type type; |
|
|
|
return type::from_value(lhs*rhs.value()); |
|
} |
|
|
|
///// runtime quantity divided by scalar |
|
//template<class Unit, |
|
// class X, |
|
// class Y> |
|
//inline |
|
//BOOST_CONSTEXPR |
|
//typename divide_typeof_helper< quantity<Unit,X>,Y >::type |
|
//operator/(const quantity<Unit,X>& lhs,const Y& rhs) |
|
//{ |
|
// typedef typename divide_typeof_helper< quantity<Unit,X>,Y >::type type; |
|
// |
|
// return type::from_value(lhs.value()/rhs); |
|
//} |
|
// |
|
///// runtime scalar divided by quantity |
|
//template<class Unit, |
|
// class X, |
|
// class Y> |
|
//inline |
|
//BOOST_CONSTEXPR |
|
//typename divide_typeof_helper< X,quantity<Unit,Y> >::type |
|
//operator/(const X& lhs,const quantity<Unit,Y>& rhs) |
|
//{ |
|
// typedef typename divide_typeof_helper< X,quantity<Unit,Y> >::type type; |
|
// |
|
// return type::from_value(lhs/rhs.value()); |
|
//} |
|
|
|
/// runtime quantity divided by scalar |
|
template<class Unit, |
|
class X> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< quantity<Unit,X>,X >::type |
|
operator/(const quantity<Unit,X>& lhs,const X& rhs) |
|
{ |
|
typedef typename divide_typeof_helper< quantity<Unit,X>,X >::type type; |
|
|
|
return type::from_value(lhs.value()/rhs); |
|
} |
|
|
|
/// runtime scalar divided by quantity |
|
template<class Unit, |
|
class X> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< X,quantity<Unit,X> >::type |
|
operator/(const X& lhs,const quantity<Unit,X>& rhs) |
|
{ |
|
typedef typename divide_typeof_helper< X,quantity<Unit,X> >::type type; |
|
|
|
return type::from_value(lhs/rhs.value()); |
|
} |
|
|
|
/// runtime unit times quantity |
|
template<class System1, |
|
class Dim1, |
|
class Unit2, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< unit<Dim1,System1>,quantity<Unit2,Y> >::type |
|
operator*(const unit<Dim1,System1>&,const quantity<Unit2,Y>& rhs) |
|
{ |
|
typedef typename multiply_typeof_helper< unit<Dim1,System1>,quantity<Unit2,Y> >::type type; |
|
|
|
return type::from_value(rhs.value()); |
|
} |
|
|
|
/// runtime unit divided by quantity |
|
template<class System1, |
|
class Dim1, |
|
class Unit2, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< unit<Dim1,System1>,quantity<Unit2,Y> >::type |
|
operator/(const unit<Dim1,System1>&,const quantity<Unit2,Y>& rhs) |
|
{ |
|
typedef typename divide_typeof_helper< unit<Dim1,System1>,quantity<Unit2,Y> >::type type; |
|
|
|
return type::from_value(Y(1)/rhs.value()); |
|
} |
|
|
|
/// runtime quantity times unit |
|
template<class Unit1, |
|
class System2, |
|
class Dim2, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< quantity<Unit1,Y>,unit<Dim2,System2> >::type |
|
operator*(const quantity<Unit1,Y>& lhs,const unit<Dim2,System2>&) |
|
{ |
|
typedef typename multiply_typeof_helper< quantity<Unit1,Y>,unit<Dim2,System2> >::type type; |
|
|
|
return type::from_value(lhs.value()); |
|
} |
|
|
|
/// runtime quantity divided by unit |
|
template<class Unit1, |
|
class System2, |
|
class Dim2, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename divide_typeof_helper< quantity<Unit1,Y>,unit<Dim2,System2> >::type |
|
operator/(const quantity<Unit1,Y>& lhs,const unit<Dim2,System2>&) |
|
{ |
|
typedef typename divide_typeof_helper< quantity<Unit1,Y>,unit<Dim2,System2> >::type type; |
|
|
|
return type::from_value(lhs.value()); |
|
} |
|
|
|
/// runtime unary plus quantity |
|
template<class Unit,class Y> |
|
BOOST_CONSTEXPR |
|
typename unary_plus_typeof_helper< quantity<Unit,Y> >::type |
|
operator+(const quantity<Unit,Y>& val) |
|
{ |
|
typedef typename unary_plus_typeof_helper< quantity<Unit,Y> >::type type; |
|
|
|
return type::from_value(+val.value()); |
|
} |
|
|
|
/// runtime unary minus quantity |
|
template<class Unit,class Y> |
|
BOOST_CONSTEXPR |
|
typename unary_minus_typeof_helper< quantity<Unit,Y> >::type |
|
operator-(const quantity<Unit,Y>& val) |
|
{ |
|
typedef typename unary_minus_typeof_helper< quantity<Unit,Y> >::type type; |
|
|
|
return type::from_value(-val.value()); |
|
} |
|
|
|
/// runtime quantity plus quantity |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename add_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type |
|
operator+(const quantity<Unit1,X>& lhs, |
|
const quantity<Unit2,Y>& rhs) |
|
{ |
|
typedef typename add_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type type; |
|
|
|
return type::from_value(lhs.value()+rhs.value()); |
|
} |
|
|
|
/// runtime quantity minus quantity |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename subtract_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type |
|
operator-(const quantity<Unit1,X>& lhs, |
|
const quantity<Unit2,Y>& rhs) |
|
{ |
|
typedef typename subtract_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type type; |
|
|
|
return type::from_value(lhs.value()-rhs.value()); |
|
} |
|
|
|
/// runtime quantity times quantity |
|
template<class Unit1, |
|
class Unit2, |
|
class X, |
|
class Y> |
|
inline |
|
BOOST_CONSTEXPR |
|
typename multiply_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type |
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operator*(const quantity<Unit1,X>& lhs, |
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const quantity<Unit2,Y>& rhs) |
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{ |
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typedef typename multiply_typeof_helper< quantity<Unit1,X>, |
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quantity<Unit2,Y> >::type type; |
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return type::from_value(lhs.value()*rhs.value()); |
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} |
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/// runtime quantity divided by quantity |
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template<class Unit1, |
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class Unit2, |
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class X, |
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class Y> |
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inline |
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BOOST_CONSTEXPR |
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typename divide_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type |
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operator/(const quantity<Unit1,X>& lhs, |
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const quantity<Unit2,Y>& rhs) |
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{ |
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typedef typename divide_typeof_helper< quantity<Unit1,X>, |
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quantity<Unit2,Y> >::type type; |
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return type::from_value(lhs.value()/rhs.value()); |
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} |
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/// runtime operator== |
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template<class Unit, |
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class X, |
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class Y> |
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inline |
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BOOST_CONSTEXPR |
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bool |
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operator==(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() == val2.value(); |
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} |
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/// runtime operator!= |
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template<class Unit, |
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class X, |
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class Y> |
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inline |
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BOOST_CONSTEXPR |
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bool |
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operator!=(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() != val2.value(); |
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} |
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/// runtime operator< |
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template<class Unit, |
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class X, |
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class Y> |
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inline |
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BOOST_CONSTEXPR |
|
bool |
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operator<(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() < val2.value(); |
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} |
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/// runtime operator<= |
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template<class Unit, |
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class X, |
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class Y> |
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inline |
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BOOST_CONSTEXPR |
|
bool |
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operator<=(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() <= val2.value(); |
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} |
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/// runtime operator> |
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template<class Unit, |
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class X, |
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class Y> |
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inline |
|
BOOST_CONSTEXPR |
|
bool |
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operator>(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() > val2.value(); |
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} |
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|
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/// runtime operator>= |
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template<class Unit, |
|
class X, |
|
class Y> |
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inline |
|
BOOST_CONSTEXPR |
|
bool |
|
operator>=(const quantity<Unit,X>& val1, |
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const quantity<Unit,Y>& val2) |
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{ |
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return val1.value() >= val2.value(); |
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} |
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} // namespace units |
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} // namespace boost |
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#endif // BOOST_UNITS_QUANTITY_HPP
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