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141 lines
4.2 KiB
141 lines
4.2 KiB
/////////////////////////////////////////////////////////////////////////////// |
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// tail_variate.hpp |
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// |
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// Copyright 2005 Eric Niebler, Michael Gauckler. Distributed under the Boost |
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// Software License, Version 1.0. (See accompanying file |
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_STAT_STATISTICS_TAIL_VARIATE_HPP_EAN_28_10_2005 |
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#define BOOST_STAT_STATISTICS_TAIL_VARIATE_HPP_EAN_28_10_2005 |
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#include <boost/range.hpp> |
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#include <boost/mpl/always.hpp> |
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#include <boost/mpl/placeholders.hpp> |
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#include <boost/iterator/reverse_iterator.hpp> |
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#include <boost/iterator/permutation_iterator.hpp> |
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#include <boost/accumulators/framework/accumulator_base.hpp> |
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#include <boost/accumulators/framework/extractor.hpp> |
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#include <boost/accumulators/framework/depends_on.hpp> |
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#include <boost/accumulators/statistics_fwd.hpp> |
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#include <boost/accumulators/statistics/tail.hpp> |
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namespace boost { namespace accumulators |
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{ |
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namespace impl |
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{ |
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/////////////////////////////////////////////////////////////////////////////// |
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// tail_variate_impl |
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template<typename VariateType, typename VariateTag, typename LeftRight> |
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struct tail_variate_impl |
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: accumulator_base |
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{ |
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// for boost::result_of |
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typedef |
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typename detail::tail_range< |
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typename std::vector<VariateType>::const_iterator |
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, std::vector<std::size_t>::iterator |
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>::type |
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result_type; |
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template<typename Args> |
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tail_variate_impl(Args const &args) |
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: variates(args[tag::tail<LeftRight>::cache_size], args[parameter::keyword<VariateTag>::get() | VariateType()]) |
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{ |
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} |
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template<typename Args> |
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void assign(Args const &args, std::size_t index) |
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{ |
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this->variates[index] = args[parameter::keyword<VariateTag>::get()]; |
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} |
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template<typename Args> |
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result_type result(Args const &args) const |
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{ |
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// getting the order result causes the indices vector to be sorted. |
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extractor<tag::tail<LeftRight> > const some_tail = {}; |
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return this->do_result(some_tail(args)); |
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} |
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private: |
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template<typename TailRng> |
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result_type do_result(TailRng const &rng) const |
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{ |
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return detail::make_tail_range( |
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this->variates.begin() |
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, rng.end().base().base() // the index iterator |
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, rng.begin().base().base() // (begin and end reversed because these are reverse iterators) |
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); |
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} |
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std::vector<VariateType> variates; |
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}; |
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} // namespace impl |
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/////////////////////////////////////////////////////////////////////////////// |
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// tag::tail_variate<> |
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// |
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namespace tag |
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{ |
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template<typename VariateType, typename VariateTag, typename LeftRight> |
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struct tail_variate |
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: depends_on<tail<LeftRight> > |
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{ |
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/// INTERNAL ONLY |
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/// |
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typedef mpl::always<accumulators::impl::tail_variate_impl<VariateType, VariateTag, LeftRight> > impl; |
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}; |
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struct abstract_tail_variate |
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: depends_on<> |
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{ |
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}; |
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template<typename LeftRight> |
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struct tail_weights |
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: depends_on<tail<LeftRight> > |
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{ |
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/// INTERNAL ONLY |
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/// |
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typedef accumulators::impl::tail_variate_impl<mpl::_2, tag::weight, LeftRight> impl; |
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}; |
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struct abstract_tail_weights |
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: depends_on<> |
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{ |
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}; |
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} |
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/////////////////////////////////////////////////////////////////////////////// |
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// extract::tail_variate |
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// extract::tail_weights |
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// |
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namespace extract |
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{ |
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extractor<tag::abstract_tail_variate> const tail_variate = {}; |
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extractor<tag::abstract_tail_weights> const tail_weights = {}; |
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BOOST_ACCUMULATORS_IGNORE_GLOBAL(tail_variate) |
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BOOST_ACCUMULATORS_IGNORE_GLOBAL(tail_weights) |
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} |
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using extract::tail_variate; |
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using extract::tail_weights; |
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template<typename VariateType, typename VariateTag, typename LeftRight> |
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struct feature_of<tag::tail_variate<VariateType, VariateTag, LeftRight> > |
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: feature_of<tag::abstract_tail_variate> |
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{ |
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}; |
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template<typename LeftRight> |
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struct feature_of<tag::tail_weights<LeftRight> > |
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{ |
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typedef tag::abstract_tail_weights type; |
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}; |
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}} // namespace boost::accumulators |
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#endif
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