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SimpleTestStatisticAbsDiff.h

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// ================================================
// SimpleTestStatisticAbsDiff class description
// ================================================
//
// THIS TEXT TO BE REPLACED BY ATLAS STANDARD FORMAT
//
// Namespace Atlfast::
//
// class: SimpleTestStatisticAbsDiff
//
// Authors: P.Clarke, H.Phillips, E.Richter-Was, P.Sherwood, R.Steward
//
// Description: 
//
//  Function object to help use of  SimpleTestStatistic with STL calls
#ifndef ATLFAST_SIMPLETESTSTATISTICABSDIFF_H
#define ATLFAST_SIMPLETESTSTATISTICABSDIFF_H
#include <string>
#include <cmath>
#include "AtlfastEvent/SimpleTestStatistic.h"
namespace Atlfast {
  using std::string;
  using std::abs;
  class SimpleTestStatisticAbsDiff{
  public:

    SimpleTestStatisticAbsDiff(const SimpleTestStatistic* s):
      m_val( s->val()){}

    SimpleTestStatisticAbsDiff(const SimpleTestStatistic* const * const s):
      m_val( (*s)->val()){}

    bool operator()(const SimpleTestStatistic s, const SimpleTestStatistic t) 
      { 
        return ( abs(s.val()-m_val) < abs(t.val()-m_val) );
      }

    bool operator()(const SimpleTestStatistic* const s, 
                    const SimpleTestStatistic* const t) { 
      return ( abs(s->val()-m_val) < abs(t->val()-m_val) );
    }

    bool operator()(const SimpleTestStatistic** const s, 
                    const SimpleTestStatistic** const t) { 
      return ( abs( (*s)->val()-m_val) < abs((*t)->val()-m_val) );
    }
  private:
    const double m_val;
  };
} // end of namespace 
#endif

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