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RooGenericPdf.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitCore *
4 * File: $Id: RooGenericPdf.h,v 1.20 2007/05/11 09:11:30 verkerke Exp $
5 * Authors: *
6 * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7 * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8 * *
9 * Copyright (c) 2000-2005, Regents of the University of California *
10 * and Stanford University. All rights reserved. *
11 * *
12 * Redistribution and use in source and binary forms, *
13 * with or without modification, are permitted according to the terms *
14 * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15 *****************************************************************************/
16#ifndef ROO_GENERIC_PDF
17#define ROO_GENERIC_PDF
18
19#include "RooAbsPdf.h"
20#include "RooFormula.h"
21#include "RooListProxy.h"
22
23class RooArgList ;
24
25class RooGenericPdf : public RooAbsPdf {
26public:
27 // Constructors, assignment etc
28 inline RooGenericPdf(){}
29 RooGenericPdf(const char *name, const char *title, const char* formula, const RooArgList& dependents);
30 RooGenericPdf(const char *name, const char *title, const RooArgList& dependents);
31 RooGenericPdf(const RooGenericPdf& other, const char* name=0);
32 virtual TObject* clone(const char* newname) const { return new RooGenericPdf(*this,newname); }
33
34 // I/O streaming interface (machine readable)
35 virtual Bool_t readFromStream(std::istream& is, Bool_t compact, Bool_t verbose=kFALSE) ;
36 virtual void writeToStream(std::ostream& os, Bool_t compact) const ;
37
38 // Printing interface (human readable)
39 void printMultiline(std::ostream& os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const ;
40 void printMetaArgs(std::ostream& os) const ;
41
42 // Debugging
43 void dumpFormula() { formula().dump() ; }
44
45protected:
46
47 RooFormula& formula() const ;
48
49 // Function evaluation
51 virtual Double_t evaluate() const ;
52 RooSpan<double> evaluateSpan(RooBatchCompute::RunContext& inputData, const RooArgSet* normSet) const;
53
54 Bool_t setFormula(const char* formula) ;
55
56 // Post-processing of server redirection
57 virtual Bool_t redirectServersHook(const RooAbsCollection& newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive) ;
58
59 virtual Bool_t isValidReal(Double_t value, Bool_t printError) const ;
60
61 std::unique_ptr<RooFormula> _formula{nullptr}; //! Formula engine
62 TString _formExpr ; // Formula expression string
63
64 ClassDef(RooGenericPdf,1) // Generic PDF defined by string expression and list of variables
65};
66
67#endif
int Int_t
Definition: RtypesCore.h:45
const Bool_t kFALSE
Definition: RtypesCore.h:101
bool Bool_t
Definition: RtypesCore.h:63
double Double_t
Definition: RtypesCore.h:59
#define ClassDef(name, id)
Definition: Rtypes.h:325
static void indent(ostringstream &buf, int indent_level)
char name[80]
Definition: TGX11.cxx:110
RooAbsCollection is an abstract container object that can hold multiple RooAbsArg objects.
RooArgList is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgList.h:22
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:35
RooFormula internally uses ROOT's TFormula to compute user-defined expressions of RooAbsArgs.
Definition: RooFormula.h:34
void dump() const
DEBUG: Dump state information.
Definition: RooFormula.cxx:295
RooGenericPdf is a concrete implementation of a probability density function, which takes a RooArgLis...
Definition: RooGenericPdf.h:25
void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
Print info about this object to the specified stream.
Bool_t setFormula(const char *formula)
Change formula expression to given expression.
virtual Double_t evaluate() const
Calculate current value of this object.
virtual void writeToStream(std::ostream &os, Bool_t compact) const
Write object contents to given stream.
void printMetaArgs(std::ostream &os) const
Add formula expression as meta argument in printing interface.
RooListProxy _actualVars
Definition: RooGenericPdf.h:50
std::unique_ptr< RooFormula > _formula
Definition: RooGenericPdf.h:61
virtual TObject * clone(const char *newname) const
Definition: RooGenericPdf.h:32
virtual Bool_t redirectServersHook(const RooAbsCollection &newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive)
Propagate server changes to embedded formula object.
RooSpan< double > evaluateSpan(RooBatchCompute::RunContext &inputData, const RooArgSet *normSet) const
Evaluate this formula for values found in inputData.
void dumpFormula()
Definition: RooGenericPdf.h:43
virtual Bool_t isValidReal(Double_t value, Bool_t printError) const
Check if given value is valid.
RooFormula & formula() const
TString _formExpr
Formula engine.
Definition: RooGenericPdf.h:62
virtual Bool_t readFromStream(std::istream &is, Bool_t compact, Bool_t verbose=kFALSE)
Read object contents from given stream.
RooListProxy is the concrete proxy for RooArgList objects.
Definition: RooListProxy.h:24
A simple container to hold a batch of data values.
Definition: RooSpan.h:34
Mother of all ROOT objects.
Definition: TObject.h:37
Basic string class.
Definition: TString.h:136
This struct enables passing computation data around between elements of a computation graph.
Definition: RunContext.h:31