1255 lines
41 KiB
Plaintext
1255 lines
41 KiB
Plaintext
// 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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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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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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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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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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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 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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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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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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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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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 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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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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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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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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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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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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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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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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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 this_type from_value(const value_type& val) { return this_type(val, 0); }
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protected:
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explicit 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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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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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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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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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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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 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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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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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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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 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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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 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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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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operator value_type() const { return val_; }
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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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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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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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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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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 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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|
|
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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
|
|
template<class Y,class X,class Unit>
|
|
struct quantity_cast_helper<Y,quantity<Unit,X> >
|
|
{
|
|
typedef Y type;
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|
|
|
type operator()(quantity<Unit,X>& source) { return const_cast<X&>(source.value()); }
|
|
};
|
|
|
|
/// specialization for casting to the value type
|
|
template<class Y,class X,class Unit>
|
|
struct quantity_cast_helper<Y,const quantity<Unit,X> >
|
|
{
|
|
typedef Y type;
|
|
|
|
type operator()(const quantity<Unit,X>& source) { return source.value(); }
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|
};
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|
|
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} // namespace detail
|
|
|
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/// quantity_cast provides mutating access to underlying quantity value_type
|
|
template<class X,class Y>
|
|
inline
|
|
X
|
|
quantity_cast(Y& source)
|
|
{
|
|
detail::quantity_cast_helper<X,Y> qch;
|
|
|
|
return qch(source);
|
|
}
|
|
|
|
template<class X,class Y>
|
|
inline
|
|
X
|
|
quantity_cast(const Y& source)
|
|
{
|
|
detail::quantity_cast_helper<X,const Y> qch;
|
|
|
|
return qch(source);
|
|
}
|
|
|
|
/// 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;
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|
};
|
|
|
|
/// 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;
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|
};
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|
|
|
/// 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;
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|
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> >
|
|
{
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|
};
|
|
|
|
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 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 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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
//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
|
|
//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
|
|
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
|
|
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
|
|
//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
|
|
//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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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
|
|
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>
|
|
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>
|
|
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
|
|
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
|
|
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
|
|
typename multiply_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type
|
|
operator*(const quantity<Unit1,X>& lhs,
|
|
const quantity<Unit2,Y>& rhs)
|
|
{
|
|
typedef typename multiply_typeof_helper< quantity<Unit1,X>,
|
|
quantity<Unit2,Y> >::type type;
|
|
|
|
return type::from_value(lhs.value()*rhs.value());
|
|
}
|
|
|
|
/// runtime quantity divided by quantity
|
|
template<class Unit1,
|
|
class Unit2,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
typename divide_typeof_helper< quantity<Unit1,X>,quantity<Unit2,Y> >::type
|
|
operator/(const quantity<Unit1,X>& lhs,
|
|
const quantity<Unit2,Y>& rhs)
|
|
{
|
|
typedef typename divide_typeof_helper< quantity<Unit1,X>,
|
|
quantity<Unit2,Y> >::type type;
|
|
|
|
return type::from_value(lhs.value()/rhs.value());
|
|
}
|
|
|
|
/// runtime operator==
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator==(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() == val2.value();
|
|
}
|
|
|
|
/// runtime operator!=
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator!=(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() != val2.value();
|
|
}
|
|
|
|
/// runtime operator<
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator<(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() < val2.value();
|
|
}
|
|
|
|
/// runtime operator<=
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator<=(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() <= val2.value();
|
|
}
|
|
|
|
/// runtime operator>
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator>(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() > val2.value();
|
|
}
|
|
|
|
/// runtime operator>=
|
|
template<class Unit,
|
|
class X,
|
|
class Y>
|
|
inline
|
|
bool
|
|
operator>=(const quantity<Unit,X>& val1,
|
|
const quantity<Unit,Y>& val2)
|
|
{
|
|
return val1.value() >= val2.value();
|
|
}
|
|
|
|
} // namespace units
|
|
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_UNITS_QUANTITY_HPP
|