VectorFunction.h

#ifndef _theplu_yat_statistics_vector_function_
#define _theplu_yat_statistics_vector_function_

// $Id: VectorFunction.h 4207 2022-08-26 04:36:28Z peter $

/*
  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2013 Jari Häkkinen
  Copyright (C) 2022 Peter Johansson

  This file is part of the yat library, http://dev.thep.lu.se/yat

  The yat library is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 3 of the
  License, or (at your option) any later version.

  The yat library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with yat. If not, see <http://www.gnu.org/licenses/>.
*/

#include <cstddef>
#include <vector>

namespace theplu {
namespace yat {
namespace statistics {

  struct VectorFunction
  {
    virtual ~VectorFunction();

    virtual double operator()(const std::vector<double>&) const=0;
  };


  struct Max : public VectorFunction
  {
    double operator()(const std::vector<double>&) const;
  };


  struct Median : public VectorFunction
  {
    double operator()(const std::vector<double>&) const;
  };

  struct Mean : public VectorFunction
  {
    double operator()(const std::vector<double>&) const;
  };


  struct Min : public VectorFunction
  {
    double operator()(const std::vector<double>&) const;
  };

  class Nth_Element : public VectorFunction
  {
  public:
    Nth_Element(size_t N);

    double operator()(const std::vector<double>&) const;

  private:
    size_t N_;
  };

}}} // of namespace statistics, yat, and theplu

#endif