| /////////////////////////////////////////////////////////////////////////////// |
| // tail_variate.hpp |
| // |
| // Copyright 2005 Eric Niebler, Michael Gauckler. 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_STAT_STATISTICS_TAIL_VARIATE_HPP_EAN_28_10_2005 |
| #define BOOST_STAT_STATISTICS_TAIL_VARIATE_HPP_EAN_28_10_2005 |
| |
| #include <boost/range.hpp> |
| #include <boost/mpl/always.hpp> |
| #include <boost/mpl/placeholders.hpp> |
| #include <boost/iterator/reverse_iterator.hpp> |
| #include <boost/iterator/permutation_iterator.hpp> |
| #include <boost/accumulators/framework/accumulator_base.hpp> |
| #include <boost/accumulators/framework/extractor.hpp> |
| #include <boost/accumulators/framework/depends_on.hpp> |
| #include <boost/accumulators/statistics_fwd.hpp> |
| #include <boost/accumulators/statistics/tail.hpp> |
| |
| namespace boost { namespace accumulators |
| { |
| |
| namespace impl |
| { |
| /////////////////////////////////////////////////////////////////////////////// |
| // tail_variate_impl |
| template<typename VariateType, typename VariateTag, typename LeftRight> |
| struct tail_variate_impl |
| : accumulator_base |
| { |
| // for boost::result_of |
| typedef |
| typename detail::tail_range< |
| typename std::vector<VariateType>::const_iterator |
| , std::vector<std::size_t>::iterator |
| >::type |
| result_type; |
| |
| template<typename Args> |
| tail_variate_impl(Args const &args) |
| : variates(args[tag::tail<LeftRight>::cache_size], args[parameter::keyword<VariateTag>::get() | VariateType()]) |
| { |
| } |
| |
| template<typename Args> |
| void assign(Args const &args, std::size_t index) |
| { |
| this->variates[index] = args[parameter::keyword<VariateTag>::get()]; |
| } |
| |
| template<typename Args> |
| result_type result(Args const &args) const |
| { |
| // getting the order result causes the indices vector to be sorted. |
| extractor<tag::tail<LeftRight> > const some_tail = {}; |
| return this->do_result(some_tail(args)); |
| } |
| |
| private: |
| template<typename TailRng> |
| result_type do_result(TailRng const &rng) const |
| { |
| return detail::make_tail_range( |
| this->variates.begin() |
| , rng.end().base().base() // the index iterator |
| , rng.begin().base().base() // (begin and end reversed because these are reverse iterators) |
| ); |
| } |
| |
| std::vector<VariateType> variates; |
| }; |
| |
| } // namespace impl |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // tag::tail_variate<> |
| // |
| namespace tag |
| { |
| template<typename VariateType, typename VariateTag, typename LeftRight> |
| struct tail_variate |
| : depends_on<tail<LeftRight> > |
| { |
| /// INTERNAL ONLY |
| /// |
| typedef mpl::always<accumulators::impl::tail_variate_impl<VariateType, VariateTag, LeftRight> > impl; |
| }; |
| |
| struct abstract_tail_variate |
| : depends_on<> |
| { |
| }; |
| |
| template<typename LeftRight> |
| struct tail_weights |
| : depends_on<tail<LeftRight> > |
| { |
| /// INTERNAL ONLY |
| /// |
| typedef accumulators::impl::tail_variate_impl<mpl::_2, tag::weight, LeftRight> impl; |
| }; |
| |
| struct abstract_tail_weights |
| : depends_on<> |
| { |
| }; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // extract::tail_variate |
| // extract::tail_weights |
| // |
| namespace extract |
| { |
| extractor<tag::abstract_tail_variate> const tail_variate = {}; |
| extractor<tag::abstract_tail_weights> const tail_weights = {}; |
| |
| BOOST_ACCUMULATORS_IGNORE_GLOBAL(tail_variate) |
| BOOST_ACCUMULATORS_IGNORE_GLOBAL(tail_weights) |
| } |
| |
| using extract::tail_variate; |
| using extract::tail_weights; |
| |
| template<typename VariateType, typename VariateTag, typename LeftRight> |
| struct feature_of<tag::tail_variate<VariateType, VariateTag, LeftRight> > |
| : feature_of<tag::abstract_tail_variate> |
| { |
| }; |
| |
| template<typename LeftRight> |
| struct feature_of<tag::tail_weights<LeftRight> > |
| { |
| typedef tag::abstract_tail_weights type; |
| }; |
| |
| }} // namespace boost::accumulators |
| |
| #endif |