Counter.h

// -*- C++ -*-
//
// Counter.hpp is a part of myStatistics
// Copyright (C) 2012-2019 Simon Platzer, The Herwig Collaboration
//
// myStatistics is licenced under version 3 of the GPL, see COPYING for details.
//
#ifndef MYSTATISTICS_Counter_hpp_included
#define MYSTATISTICS_Counter_hpp_included
 
#include "Herwig/Utilities/XML/Element.h"
 
namespace Statistics {
 
  class Counter {
 
  public:
 
    Counter();
 
    virtual ~Counter();
 
  public:
 
    void initialize() {}
 
    void reset() { *this = Counter(); }
 
    void finalize() { if ( isOpen() ) close(); }
 
  public:
 
    void open(size_t id);
 
    void close();
 
    void count(double weight, size_t id);
 
  public:
 
    Counter& operator+=(const Counter& other);
 
    Counter& operator-=(const Counter& other);
 
  public:
 
    double sumOfWeights() const { return theSumOfWeights; }
 
    double sumOfSquaredWeights() const { return theSumOfSquaredWeights; }
 
    double sumOfEventWeights() const { return theSumOfEventWeights; }
 
    size_t eventId() const { return theEventId; }
 
    bool isOpen() const { return eventId() != 0; }
 
    bool isClosed() const { return !isOpen(); }
 
  public:
 
    double average(double nPoints) const;
 
    double varianceOfAverage(double nPoints) const;
 
  public:
 
    void fromXML(const XML::Element&);
 
    XML::Element toXML() const;
 
  private:
 
    double theSumOfWeights;
 
    double theSumOfSquaredWeights;
 
    double theSumOfEventWeights;
 
    size_t theEventId;
 
  };
 
}
 
#endif // MYSTATISTICS_Counter_hpp_included