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 * __________________________________________________________________________ *
 *                 Multifunctional Library For Image Processing               *
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 *      (c) Copyright 2007 by Humbert Florent                                 *
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#ifndef _MILLIESTD_HPP_
#define _MILLIESTD_HPP_

#include "DataBuffer.hpp"
#include <vector>

/*définie un ensemble de fonction standard*/
namespace Millie
{

  float getMinimum(DataBuffer<float>& buffer);

  float getMinimum(std::vector<float>& vect);

  float getMaximum(DataBuffer<float>& buffer);

  float getMaximum(std::vector<float>& vect);

  float getAverage(std::vector<float> & vect);

  float getAverage(DataBuffer<float>& buffer);

  float getVariance(std::vector<float> & vect);

  float getVariance(DataBuffer<float> & buffer);

  class Math
  {
    public:
      static float sign(float a)
      {
        if(a<0)
          return -1.0f;
        if(norm(a)==0.00)
          return 0.0f;
        return 1.0f;
      }

      template<typename T>
      static T square(T a)
      {
        return (a*a);
      }


      static float norm(float a)
      {
        if(a<0)
          return -a;
        else
          return a;
      }

      static float minmod(float a, float b)
      {
        return 0.5* (sign(a) + sign(b)) * (norm(a) < norm(b) ? norm(a) : norm(b));
        /*     if(a*b>0)
              return std::min(norm(a),norm(b));
             else
              return 0;
          */
      }

      static float maxmod(float a, float b)
      {
        return 0.5* (sign(a) + sign(b)) * (norm(a) > norm(b) ? norm(a) : norm(b));
      }


  };

};

#endif

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