/Src/Dependencies/Boost/boost/accumulators/statistics/rolling_sum.hpp
http://hadesmem.googlecode.com/ · C++ Header · 93 lines · 60 code · 15 blank · 18 comment · 1 complexity · 6f7e62751623776f6ec00440b76014b4 MD5 · raw file
- ///////////////////////////////////////////////////////////////////////////////
- // rolling_sum.hpp
- //
- // Copyright 2008 Eric Niebler. 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_ACCUMULATORS_STATISTICS_ROLLING_SUM_HPP_EAN_26_12_2008
- #define BOOST_ACCUMULATORS_STATISTICS_ROLLING_SUM_HPP_EAN_26_12_2008
- #include <boost/mpl/placeholders.hpp>
- #include <boost/accumulators/framework/accumulator_base.hpp>
- #include <boost/accumulators/framework/extractor.hpp>
- #include <boost/accumulators/numeric/functional.hpp>
- #include <boost/accumulators/framework/parameters/sample.hpp>
- #include <boost/accumulators/framework/depends_on.hpp>
- #include <boost/accumulators/statistics_fwd.hpp>
- #include <boost/accumulators/statistics/rolling_window.hpp>
- namespace boost { namespace accumulators
- {
- namespace impl
- {
- ///////////////////////////////////////////////////////////////////////////////
- // rolling_sum_impl
- // returns the sum of the samples in the rolling window
- template<typename Sample>
- struct rolling_sum_impl
- : accumulator_base
- {
- typedef Sample result_type;
- template<typename Args>
- rolling_sum_impl(Args const &args)
- : sum_(args[sample | Sample()])
- {}
- template<typename Args>
- void operator ()(Args const &args)
- {
- if(is_rolling_window_plus1_full(args))
- {
- this->sum_ -= rolling_window_plus1(args).front();
- }
- this->sum_ += args[sample];
- }
- template<typename Args>
- result_type result(Args const &args) const
- {
- return this->sum_;
- }
- private:
- Sample sum_;
- };
- } // namespace impl
- ///////////////////////////////////////////////////////////////////////////////
- // tag::rolling_sum
- //
- namespace tag
- {
- struct rolling_sum
- : depends_on< rolling_window_plus1 >
- {
- /// INTERNAL ONLY
- ///
- typedef accumulators::impl::rolling_sum_impl< mpl::_1 > impl;
- #ifdef BOOST_ACCUMULATORS_DOXYGEN_INVOKED
- /// tag::rolling_window::window_size named parameter
- static boost::parameter::keyword<tag::rolling_window_size> const window_size;
- #endif
- };
- } // namespace tag
- ///////////////////////////////////////////////////////////////////////////////
- // extract::rolling_sum
- //
- namespace extract
- {
- extractor<tag::rolling_sum> const rolling_sum = {};
- BOOST_ACCUMULATORS_IGNORE_GLOBAL(rolling_sum)
- }
- using extract::rolling_sum;
- }} // namespace boost::accumulators
- #endif