azcr.hpp

Go to the documentation of this file.

#ifndef EDSP_AZCR_HPP
#define EDSP_AZCR_HPP

#include <edsp/math/numeric.hpp>
#include <iterator>

namespace edsp { namespace feature { inline namespace temporal {


    template <typename InputIt, typename OutputIt>
    constexpr void amdf(InputIt first, InputIt last, OutputIt d_first) {
        using value_type = typename std::iterator_traits<OutputIt>::value_type;
        value_type accumulated = 0;
        for (++first; first != last;) {
            accumulated += math::sign(*first) != math::sign(*(first - 1));
        }
        return accumulated / static_cast<value_type>(std::distance(first, last));
    }


}}}

#endif //EDSP_AZCR_HPP