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HxNgbMean.h

/*
 *  Copyright (c) 2000, University of Amsterdam, The Netherlands.
 *  All rights reserved.
 *
 *  Author(s):
 *  Edo Poll                (poll@wins.uva.nl)
 */

#ifndef HxNgbMean_h
#define HxNgbMean_h

#include "HxClassName.h"
#include "HxSizes.h"
#include "HxCategories.h"
#include "HxTagList.h"


template<class ResultT, class ArithT>
class HxNgbMean
{
public:

    typedef HxTagLoop           IteratorCategory;
    typedef HxTag1Phase         PhaseCategory;


                            HxNgbMean(HxTagList& tags);

    HxSizes                 size();
    void                    init(int, int, ArithT);

    void                    next(int, int, ArithT value);
    void                    next(int, int, int, ArithT value);
    ArithT                  result() const;

    static HxString         className();

private:
    ResultT                 _sum;
    int                     _cnt;
    HxSizes                 _size;
};

template<class ResultT, class ArithT>
inline HxString
HxNgbMean<ResultT, ArithT>::className()
{
    static HxString s("mean");
    return s;
}

template<class ResultT, class ArithT>
inline void
HxNgbMean<ResultT, ArithT>::init(int, int, ArithT)
{
    _cnt = 0;
    _sum = HxScalarInt(0);
}

template<class ResultT, class ArithT>
inline void
HxNgbMean<ResultT, ArithT>::next(int, int, ArithT value)
{
    _cnt++;
    _sum += ResultT(value);
}

template<class ResultT, class ArithT>
inline void
HxNgbMean<ResultT, ArithT>::next(int, int, int, ArithT value)
{
    _cnt++;
    _sum += ResultT(value);
}

template<class ResultT, class ArithT>
inline HxSizes  
HxNgbMean<ResultT, ArithT>::size()
{
    return _size;
}

template<class ResultT, class ArithT>
inline ArithT
HxNgbMean<ResultT, ArithT>::result() const
{
    return _sum / ResultT(HxScalarInt(_cnt));
}

#ifdef INC_TEMPLATE_SRC
#include "HxNgbMean.c"
#endif

#endif

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