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+// 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_DERIVED_DIMENSION_HPP
+#define BOOST_UNITS_DERIVED_DIMENSION_HPP
+
+#include <boost/units/dim.hpp>
+#include <boost/units/dimension.hpp>
+#include <boost/units/static_rational.hpp>
+#include <boost/units/units_fwd.hpp>
+#include <boost/units/detail/dimension_list.hpp>
+
+namespace boost {
+
+namespace units {
+
+/// A utility class for defining composite dimensions with integer powers.
+template<class DT1 = dimensionless_type,long E1 = 0,
+ class DT2 = dimensionless_type,long E2 = 0,
+ class DT3 = dimensionless_type,long E3 = 0,
+ class DT4 = dimensionless_type,long E4 = 0,
+ class DT5 = dimensionless_type,long E5 = 0,
+ class DT6 = dimensionless_type,long E6 = 0,
+ class DT7 = dimensionless_type,long E7 = 0,
+ class DT8 = dimensionless_type,long E8 = 0>
+struct derived_dimension
+{
+#ifdef BOOST_UNITS_DOXYGEN
+ typedef detail::unspecified type;
+#else
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >,
+ list< dim< DT4,static_rational<E4> >,
+ list< dim< DT5,static_rational<E5> >,
+ list< dim< DT6,static_rational<E6> >,
+ list< dim< DT7,static_rational<E7> >,
+ list< dim< DT8,static_rational<E8> >, dimensionless_type > > > > > > > > >::type type;
+#endif
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1>
+struct derived_dimension<
+ DT1, E1,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >, dimensionless_type > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >, dimensionless_type > > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2,
+ class DT3,long E3>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ DT3, E3,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >, dimensionless_type > > > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2,
+ class DT3,long E3,
+ class DT4,long E4>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ DT3, E3,
+ DT4, E4,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >,
+ list< dim< DT4,static_rational<E4> >, dimensionless_type > > > > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2,
+ class DT3,long E3,
+ class DT4,long E4,
+ class DT5,long E5>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ DT3, E3,
+ DT4, E4,
+ DT5, E5,
+ dimensionless_type,0,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >,
+ list< dim< DT4,static_rational<E4> >,
+ list< dim< DT5,static_rational<E5> >, dimensionless_type > > > > > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2,
+ class DT3,long E3,
+ class DT4,long E4,
+ class DT5,long E5,
+ class DT6,long E6>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ DT3, E3,
+ DT4, E4,
+ DT5, E5,
+ DT6, E6,
+ dimensionless_type,0,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >,
+ list< dim< DT4,static_rational<E4> >,
+ list< dim< DT5,static_rational<E5> >,
+ list< dim< DT6,static_rational<E6> >, dimensionless_type > > > > > > >::type type;
+};
+
+/// INTERNAL ONLY
+template<class DT1,long E1,
+ class DT2,long E2,
+ class DT3,long E3,
+ class DT4,long E4,
+ class DT5,long E5,
+ class DT6,long E6,
+ class DT7,long E7>
+struct derived_dimension<
+ DT1, E1,
+ DT2, E2,
+ DT3, E3,
+ DT4, E4,
+ DT5, E5,
+ DT6, E6,
+ DT7, E7,
+ dimensionless_type,0>
+{
+ typedef typename
+ make_dimension_list< list< dim< DT1,static_rational<E1> >,
+ list< dim< DT2,static_rational<E2> >,
+ list< dim< DT3,static_rational<E3> >,
+ list< dim< DT4,static_rational<E4> >,
+ list< dim< DT5,static_rational<E5> >,
+ list< dim< DT6,static_rational<E6> >,
+ list< dim< DT7,static_rational<E7> >, dimensionless_type > > > > > > > >::type type;
+};
+
+} // namespace units
+
+} // namespace boost
+
+#endif // BOOST_UNITS_DERIVED_DIMENSION_HPP