include/root/RooChebychev.h

0001 /*****************************************************************************
0002  * Project: RooFit                                                           *
0003  * Package: RooFitModels                                                     *
0004  *    File: $Id: RooChebychev.h,v 1.6 2007/05/11 09:13:07 verkerke Exp $
0005  * Authors:                                                                  *
0006  *   GR, Gerhard Raven,   UC San Diego, Gerhard.Raven@slac.stanford.edu
0007  *                                                                           *
0008  * Copyright (c) 2000-2005, Regents of the University of California          *
0009  *                          and Stanford University. All rights reserved.    *
0010  *                                                                           *
0011  * Redistribution and use in source and binary forms,                        *
0012  * with or without modification, are permitted according to the terms        *
0013  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
0014  *****************************************************************************/
0015 #ifndef ROO_CHEBYCHEV
0016 #define ROO_CHEBYCHEV
0017
0018 #include "RooAbsPdf.h"
0019 #include "RooRealProxy.h"
0020 #include "RooListProxy.h"
0021
0022 class RooRealVar;
0023 class RooArgList ;
0024
0025 class RooChebychev : public RooAbsPdf {
0026 public:
0027
0028   RooChebychev() ;
0029   RooChebychev(const char *name, const char *title,
0030                RooAbsReal& _x, const RooArgList& _coefList) ;
0031
0032   RooChebychev(const RooChebychev& other, const char *name = nullptr);
0033   TObject* clone(const char* newname) const override { return new RooChebychev(*this, newname); }
0034
0035   Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override ;
0036   double analyticalIntegral(Int_t code, const char* rangeName=nullptr) const override ;
0037
0038   void selectNormalizationRange(const char* rangeName=nullptr, bool force=false) override ;
0039
0040   void translate(RooFit::Detail::CodeSquashContext &ctx) const override;
0041   std::string
0042   buildCallToAnalyticIntegral(Int_t code, const char *rangeName, RooFit::Detail::CodeSquashContext &ctx) const override;
0043
0044   private:
0045   RooRealProxy _x;
0046   RooListProxy _coefList ;
0047   mutable TNamed* _refRangeName = nullptr;
0048
0049   double evaluate() const override;
0050   void doEval(RooFit::EvalContext &) const override;
0051   inline bool canComputeBatchWithCuda() const override { return true; }
0052
0053   double evalAnaInt(const double a, const double b) const;
0054
0055   ClassDefOverride(RooChebychev,2) // Chebychev polynomial PDF
0056 };
0057
0058 #endif