Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/units/dimension.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/units/dimension.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,150 @@ +// 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) 2007-2008 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_DIMENSION_HPP +#define BOOST_UNITS_DIMENSION_HPP + +#include <boost/static_assert.hpp> + +#include <boost/type_traits/is_same.hpp> + +#include <boost/mpl/arithmetic.hpp> + +#include <boost/units/static_rational.hpp> +#include <boost/units/detail/dimension_list.hpp> +#include <boost/units/detail/dimension_impl.hpp> + +/// \file +/// \brief Core metaprogramming utilities for compile-time dimensional analysis. + +namespace boost { + +namespace units { + +/// Reduce dimension list to cardinal form. This algorithm collapses duplicate +/// base dimension tags and sorts the resulting list by the tag ordinal value. +/// Dimension lists that resolve to the same dimension are guaranteed to be +/// represented by an identical type. +/// +/// The argument should be an MPL forward sequence containing instances +/// of the @c dim template. +/// +/// The result is also an MPL forward sequence. It also supports the +/// following metafunctions to allow use as a dimension. +/// +/// - @c mpl::plus is defined only on two equal dimensions and returns the argument unchanged. +/// - @c mpl::minus is defined only for two equal dimensions and returns the argument unchanged. +/// - @c mpl::negate will return its argument unchanged. +/// - @c mpl::times is defined for any dimensions and adds corresponding exponents. +/// - @c mpl::divides is defined for any dimensions and subtracts the exponents of the +/// right had argument from the corresponding exponents of the left had argument. +/// Missing base dimension tags are assumed to have an exponent of zero. +/// - @c static_power takes a dimension and a static_rational and multiplies all +/// the exponents of the dimension by the static_rational. +/// - @c static_root takes a dimension and a static_rational and divides all +/// the exponents of the dimension by the static_rational. +template<typename Seq> +struct make_dimension_list +{ + typedef typename detail::sort_dims<Seq>::type type; +}; + +/// Raise a dimension list to a scalar power. +template<typename DL,typename Ex> +struct static_power +{ + typedef typename detail::static_power_impl<DL::size::value>::template apply< + DL, + Ex + >::type type; +}; + +/// Take a scalar root of a dimension list. +template<typename DL,typename Rt> +struct static_root +{ + typedef typename detail::static_root_impl<DL::size::value>::template apply< + DL, + Rt + >::type type; +}; + +} // namespace units + +#ifndef BOOST_UNITS_DOXYGEN + +namespace mpl { + +template<> +struct plus_impl<boost::units::detail::dimension_list_tag,boost::units::detail::dimension_list_tag> +{ + template<class T0, class T1> + struct apply + { + BOOST_STATIC_ASSERT((boost::is_same<T0,T1>::value == true)); + typedef T0 type; + }; +}; + +template<> +struct minus_impl<boost::units::detail::dimension_list_tag,boost::units::detail::dimension_list_tag> +{ + template<class T0, class T1> + struct apply + { + BOOST_STATIC_ASSERT((boost::is_same<T0,T1>::value == true)); + typedef T0 type; + }; +}; + +template<> +struct times_impl<boost::units::detail::dimension_list_tag,boost::units::detail::dimension_list_tag> +{ + template<class T0, class T1> + struct apply + { + typedef typename boost::units::detail::merge_dimensions<T0,T1>::type type; + }; +}; + +template<> +struct divides_impl<boost::units::detail::dimension_list_tag,boost::units::detail::dimension_list_tag> +{ + template<class T0, class T1> + struct apply + { + typedef typename boost::units::detail::merge_dimensions< + T0, + typename boost::units::detail::static_inverse_impl< + T1::size::value + >::template apply< + T1 + >::type + >::type type; + }; +}; + +template<> +struct negate_impl<boost::units::detail::dimension_list_tag> +{ + template<class T0> + struct apply + { + typedef T0 type; + }; +}; + +} // namespace mpl + +#endif + +} // namespace boost + +#endif // BOOST_UNITS_DIMENSION_HPP