/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 *    File: $Id: RooExtendPdf.h,v 1.12 2007/07/16 21:04:28 wouter Exp $
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
#ifndef ROO_EXTEND_PDF
#define ROO_EXTEND_PDF

#include "RooAbsPdf.h"
#include "RooRealProxy.h"

class RooExtendPdf : public RooAbsPdf {
public:

  RooExtendPdf() ;
  RooExtendPdf(const char *name, const char *title, const RooAbsPdf& pdf, 
	       const RooAbsReal& norm, const char* rangeName=0) ;
  RooExtendPdf(const RooExtendPdf& other, const char* name=0) ;
  virtual TObject* clone(const char* newname) const { return new RooExtendPdf(*this,newname) ; }
  virtual ~RooExtendPdf() ;

  Double_t evaluate() const { return _pdf ; }

  Bool_t forceAnalyticalInt(const RooAbsArg& /*dep*/) const { return kTRUE ; }
  Int_t getAnalyticalIntegralWN(RooArgSet& allVars, RooArgSet& analVars, const RooArgSet* normSet, const char* rangeName=0) const {
    // Forward determination of analytical integration capabilities to input p.d.f
    return ((RooAbsPdf&)_pdf.arg()).getAnalyticalIntegralWN(allVars, analVars, normSet, rangeName) ;
  }
  Double_t analyticalIntegralWN(Int_t code, const RooArgSet* normSet, const char* rangeName=0) const {
    // Forward calculation of analytical integrals to input p.d.f
    return ((RooAbsPdf&)_pdf.arg()).analyticalIntegralWN(code, normSet, rangeName) ;
  }
  
  virtual Bool_t selfNormalized() const { return kTRUE ; }
  virtual ExtendMode extendMode() const { return CanBeExtended ; }
  virtual Double_t expectedEvents(const RooArgSet* nset) const ;
  virtual Double_t expectedEvents(const RooArgSet& nset) const { return expectedEvents(&nset) ; }

protected:

  RooRealProxy _pdf ;        // Input p.d.f
  RooRealProxy _n ;          // Number of expected events
  const TNamed* _rangeName ; // Name of subset range


  ClassDef(RooExtendPdf,1) // Wrapper p.d.f adding an extended likelihood term to an existing p.d.f
};

#endif
 RooExtendPdf.h:1
 RooExtendPdf.h:2
 RooExtendPdf.h:3
 RooExtendPdf.h:4
 RooExtendPdf.h:5
 RooExtendPdf.h:6
 RooExtendPdf.h:7
 RooExtendPdf.h:8
 RooExtendPdf.h:9
 RooExtendPdf.h:10
 RooExtendPdf.h:11
 RooExtendPdf.h:12
 RooExtendPdf.h:13
 RooExtendPdf.h:14
 RooExtendPdf.h:15
 RooExtendPdf.h:16
 RooExtendPdf.h:17
 RooExtendPdf.h:18
 RooExtendPdf.h:19
 RooExtendPdf.h:20
 RooExtendPdf.h:21
 RooExtendPdf.h:22
 RooExtendPdf.h:23
 RooExtendPdf.h:24
 RooExtendPdf.h:25
 RooExtendPdf.h:26
 RooExtendPdf.h:27
 RooExtendPdf.h:28
 RooExtendPdf.h:29
 RooExtendPdf.h:30
 RooExtendPdf.h:31
 RooExtendPdf.h:32
 RooExtendPdf.h:33
 RooExtendPdf.h:34
 RooExtendPdf.h:35
 RooExtendPdf.h:36
 RooExtendPdf.h:37
 RooExtendPdf.h:38
 RooExtendPdf.h:39
 RooExtendPdf.h:40
 RooExtendPdf.h:41
 RooExtendPdf.h:42
 RooExtendPdf.h:43
 RooExtendPdf.h:44
 RooExtendPdf.h:45
 RooExtendPdf.h:46
 RooExtendPdf.h:47
 RooExtendPdf.h:48
 RooExtendPdf.h:49
 RooExtendPdf.h:50
 RooExtendPdf.h:51
 RooExtendPdf.h:52
 RooExtendPdf.h:53
 RooExtendPdf.h:54
 RooExtendPdf.h:55
 RooExtendPdf.h:56
 RooExtendPdf.h:57
 RooExtendPdf.h:58
 RooExtendPdf.h:59