MaxCmp.h

// -*- C++ -*-
//
// MaxCmp.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2007 Leif Lonnblad
//
// ThePEG is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef THEPEG_MaxCmp_H
#define THEPEG_MaxCmp_H
//
// This is the declaration of the MaxCmp class.
//

namespace ThePEG {

template <typename T>
class MaxCmp {

public:

  MaxCmp() : init(false), max(T()) {}

  MaxCmp(const T & t) : init(true), max(t) {}

public:

  bool operator()(const T & t)
  {
    if ( !init || t > max ) {
      max = t;
      init = true;
      return true;
    }
    return false;
  }

  operator const T & () const { return max; }

private:

  bool init;

  T max;

};

}

#endif /* THEPEG_MaxCmp_H */

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