CacheBranchFx.h

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//____________________________________________________________________________
/*!
 
\class    genie::CacheBranchFx
 
\brief    A simple cache branch storing the cached data in a TNtuple
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool
          
          Update May 15, 2022 IK: 
          Now type of spline can be:  TSpline3, TSpline5 and 
          ROOT::Math::GSLInterpolator (LINEAR, POLYNOMIAL, CSPLINE, CSPLINE_PERIODIC,
          AKIMA, AKIMA_PERIODIC)
          
\ref      [1] GENIE docdb 297
 
\author   Costas Andreopoulos <c.andreopoulos \at cern.ch>
          University of Liverpool \n
          Igor Kakorin <kakorin@jinr.ru>
          Joint Institute for Nuclear Research
 
\created  November 26, 2004
 
\cpright  Copyright (c) 2003-2025, The GENIE Collaboration
          For the full text of the license visit http://copyright.genie-mc.org          
*/
//____________________________________________________________________________
 
#ifndef _CACHE_BRANCH_FUNC_X_H_
#define _CACHE_BRANCH_FUNC_X_H_
 
#include <iostream>
#include <string>
#include <map>
 
#include "Framework/Numerical/Spline.h"
#include "Framework/Utils/CacheBranchI.h"
 
using std::string;
using std::ostream;
using std::map;
 
namespace genie {
 
class CacheBranchFx;
ostream & operator << (ostream & stream, const CacheBranchFx & cbntp);
 
class CacheBranchFx : public CacheBranchI
{
public:
  using TObject::Print; // suppress clang 'hides overloaded virtual function [-Woverloaded-virtual]' warnings
 
  CacheBranchFx();
  CacheBranchFx(string name);
  ~CacheBranchFx();
 
  const map<double,double> & Map (void) const { return fFx;     }
  Spline *                   Spl (void) const { return fSpline; }
 
  void CreateSpline(string type = "TSpline3");
  void AddValues(double x, double y);
 
  void Reset (void);
  void Print (ostream & stream) const;
 
  double operator () (double x) const;
  friend ostream & operator << (ostream & stream, const CacheBranchFx & cbntp);
 
private:
  void Init    (void);
  void CleanUp (void);
 
  string             fName;   ///< cache branch name
  map<double,double> fFx;     ///< x->y map
  Spline *           fSpline; ///< spline y = f(x)
 
ClassDef(CacheBranchFx,1)
};
 
}      // genie namespace
#endif // _CACHE_BRANCH_FUNC_X_H_