///////////////////////////////////////////////////////////////////////////////
|
// 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
|
