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Diffstat (limited to 'boost/accumulators/statistics/error_of.hpp')
-rw-r--r-- | boost/accumulators/statistics/error_of.hpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/boost/accumulators/statistics/error_of.hpp b/boost/accumulators/statistics/error_of.hpp new file mode 100644 index 0000000000..a29da02f57 --- /dev/null +++ b/boost/accumulators/statistics/error_of.hpp @@ -0,0 +1,99 @@ +/////////////////////////////////////////////////////////////////////////////// +// error_of.hpp +// +// Copyright 2005 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_ERROR_OF_HPP_EAN_29_11_2005 +#define BOOST_ACCUMULATORS_STATISTICS_ERROR_OF_HPP_EAN_29_11_2005 + +#include <boost/mpl/placeholders.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> + +namespace boost { namespace accumulators +{ + +namespace impl +{ + /// INTERNAL ONLY + /// + template<typename Feature> + struct this_feature_has_no_error_calculation + : mpl::false_ + { + }; + + /////////////////////////////////////////////////////////////////////////////// + // error_of_impl + /// INTERNAL ONLY + /// + template<typename Sample, typename Feature> + struct error_of_impl + : accumulator_base + { + // TODO: specialize this on the specific features that have errors we're + // interested in. + BOOST_MPL_ASSERT((this_feature_has_no_error_calculation<Feature>)); + + // for boost::result_of + typedef int result_type; + + error_of_impl(dont_care) + { + } + + result_type result(dont_care) const + { + return 0; + } + }; + +} // namespace impl + +/////////////////////////////////////////////////////////////////////////////// +// tag::error_of +// +namespace tag +{ + template<typename Feature> + struct error_of + : depends_on<Feature> + { + /// INTERNAL ONLY + /// + typedef accumulators::impl::error_of_impl<mpl::_1, Feature> impl; + }; +} + +/////////////////////////////////////////////////////////////////////////////// +// extract::error_of +// +namespace extract +{ + BOOST_ACCUMULATORS_DEFINE_EXTRACTOR(tag, error_of, (typename)) +} + +using extract::error_of; + +// make tag::error_of<tag::feature(modifier)> work +template<typename Feature> +struct as_feature<tag::error_of<Feature> > +{ + typedef tag::error_of<typename as_feature<Feature>::type> type; +}; + +// make error_of<tag::mean> work with non-void weights (should become +// error_of<tag::weighted_mean> +template<typename Feature> +struct as_weighted_feature<tag::error_of<Feature> > +{ + typedef tag::error_of<typename as_weighted_feature<Feature>::type> type; +}; + +}} // namespace boost::accumulators + +#endif |