APRTreeFormula.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#include "TTreeFormula.h"
 
class APRTreeFormula : public TTreeFormula
{
public:
  
  APRTreeFormula(const std::string& exp, TTree *tree) :
        TTreeFormula("APRTreeFormula", exp.c_str(), tree),
        m_aprConst( 0 )
  {
     readConstants();
  }
 
  virtual ~APRTreeFormula();
 
  APRTreeFormula (const APRTreeFormula&) = delete;
  APRTreeFormula& operator= (const APRTreeFormula&) = delete;
  
  
  typedef long double LDouble_t;
 
  void          readConstants();
  Double_t      EvalInstance(Int_t instance = 0, const char *stringStackArg[]=0);
 
protected:
 
  LDouble_t     *m_aprConst;
};