comparison DEPENDENCIES/generic/include/boost/units/detail/absolute_impl.hpp @ 16:2665513ce2d3

Add boost headers

+// Boost.Units - A C++ library for zero-overhead dimensional analysis and 
+// unit/quantity manipulation and conversion
+//
+// Copyright (C) 2003-2008 Matthias Christian Schabel
+// Copyright (C) 2008 Steven Watanabe
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_UNITS_ABSOLUTE_IMPL_HPP
+#define BOOST_UNITS_ABSOLUTE_IMPL_HPP
+
+#include <iosfwd>
+
+#include <boost/units/config.hpp>
+#include <boost/units/conversion.hpp>
+#include <boost/units/heterogeneous_system.hpp>
+#include <boost/units/units_fwd.hpp>
+
+namespace boost {
+
+namespace units {
+
+/// INTERNAL ONLY
+template<class D, class S>
+struct reduce_unit<absolute<unit<D, S> > >
+{
+    typedef absolute<typename reduce_unit<unit<D, S> >::type> type;
+};
+
+namespace detail {
+
+struct undefined_affine_conversion_base {
+    static const bool is_defined = false;
+};
+
+} // namespace detail
+
+/// INTERNAL ONLY
+template<class From, class To>
+struct affine_conversion_helper : detail::undefined_affine_conversion_base { };
+
+namespace detail {
+
+template<bool IsDefined, bool ReverseIsDefined>
+struct affine_conversion_impl;
+
+template<bool ReverseIsDefined>
+struct affine_conversion_impl<true, ReverseIsDefined>
+{
+    template<class Unit1, class Unit2, class T0, class T1>
+    struct apply {
+        static T1 value(const T0& t0)
+        {
+            return(
+                t0 * 
+                conversion_factor(Unit1(), Unit2()) +
+                affine_conversion_helper<typename reduce_unit<Unit1>::type, typename reduce_unit<Unit2>::type>::value());
+        }
+    };
+};
+
+template<>
+struct affine_conversion_impl<false, true>
+{
+    template<class Unit1, class Unit2, class T0, class T1>
+    struct apply
+    {
+        static T1 value(const T0& t0)
+        {
+            return(
+                (t0 - affine_conversion_helper<typename reduce_unit<Unit2>::type, typename reduce_unit<Unit1>::type>::value()) * 
+                conversion_factor(Unit1(), Unit2()));
+        }
+    };
+};
+
+} // namespace detail
+
+/// INTERNAL ONLY
+template<class Unit1, class T1, class Unit2, class T2>
+struct conversion_helper<quantity<absolute<Unit1>, T1>, quantity<absolute<Unit2>, T2> >
+{
+    typedef quantity<absolute<Unit1>, T1> from_quantity_type;
+    typedef quantity<absolute<Unit2>, T2> to_quantity_type;
+    static to_quantity_type convert(const from_quantity_type& source)
+    {
+        return(
+            to_quantity_type::from_value(
+                detail::affine_conversion_impl<
+                    affine_conversion_helper<typename reduce_unit<Unit1>::type, typename reduce_unit<Unit2>::type>::is_defined,
+                    affine_conversion_helper<typename reduce_unit<Unit2>::type, typename reduce_unit<Unit1>::type>::is_defined
+                >::template apply<Unit1, Unit2, T1, T2>::value(source.value())
+            )
+        );
+    }
+};
+
+} // namespace units
+
+} // namespace boost
+
+#endif // BOOST_UNITS_ABSOLUTE_IMPL_HPP