Logo ROOT  
Reference Guide
RooLandau.h
Go to the documentation of this file.
1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitModels *
4 * File: $Id: RooLandau.h,v 1.5 2007/07/12 20:30:49 wouter 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_LANDAU
17#define ROO_LANDAU
18
19#include "RooAbsPdf.h"
20#include "RooRealProxy.h"
21
22class RooRealVar;
23
24class RooLandau : public RooAbsPdf {
25public:
26 RooLandau() {} ;
27 // Original constructor without RooAbsReal::Ref for backwards compatibility.
28 inline RooLandau(const char *name, const char *title, RooAbsReal& _x, RooAbsReal& _mean, RooAbsReal& _sigma)
29 : RooLandau{name, title, RooAbsReal::Ref{_x}, RooAbsReal::Ref{_mean}, RooAbsReal::Ref{_sigma}} {}
30 RooLandau(const char *name, const char *title, RooAbsReal::Ref _x, RooAbsReal::Ref _mean, RooAbsReal::Ref _sigma);
31 RooLandau(const RooLandau& other, const char* name=nullptr);
32 TObject* clone(const char* newname) const override { return new RooLandau(*this,newname); }
33 inline ~RooLandau() override { }
34
35 Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, bool staticInitOK=true) const override;
36 void generateEvent(Int_t code) override;
37
38 Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName = nullptr) const override;
39 double analyticalIntegral(Int_t code, const char *rangeName) const override;
40
41protected:
42
46
47 double evaluate() const override ;
48 void computeBatch(cudaStream_t*, double* output, size_t nEvents, RooFit::Detail::DataMap const&) const override;
49 inline bool canComputeBatchWithCuda() const override { return true; }
50
51private:
52
53 ClassDefOverride(RooLandau,1) // Landau Distribution PDF
54};
55
56#endif
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
char name[80]
Definition: TGX11.cxx:110
A RooAbsReal::Ref can be constructed from a RooAbsReal& or a double that will be implicitly converted...
Definition: RooAbsReal.h:69
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:60
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:56
Landau distribution p.d.f.
Definition: RooLandau.h:24
~RooLandau() override
Definition: RooLandau.h:33
RooLandau()
Definition: RooLandau.h:26
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
Definition: RooLandau.cxx:79
void generateEvent(Int_t code) override
Interface for generation of an event using the algorithm corresponding to the specified code.
Definition: RooLandau.cxx:103
TObject * clone(const char *newname) const override
Definition: RooLandau.h:32
RooLandau(const char *name, const char *title, RooAbsReal &_x, RooAbsReal &_mean, RooAbsReal &_sigma)
Definition: RooLandau.h:28
RooRealProxy x
Definition: RooLandau.h:43
RooRealProxy sigma
Definition: RooLandau.h:45
void computeBatch(cudaStream_t *, double *output, size_t nEvents, RooFit::Detail::DataMap const &) const override
Compute multiple values of Landau distribution.
Definition: RooLandau.cxx:64
double evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
Definition: RooLandau.cxx:57
bool canComputeBatchWithCuda() const override
Definition: RooLandau.h:49
Int_t getGenerator(const RooArgSet &directVars, RooArgSet &generateVars, bool staticInitOK=true) const override
Load generatedVars with the subset of directVars that we can generate events for, and return a code t...
Definition: RooLandau.cxx:73
RooRealProxy mean
Definition: RooLandau.h:44
double analyticalIntegral(Int_t code, const char *rangeName) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
Definition: RooLandau.cxx:86
RooRealVar represents a variable that can be changed from the outside.
Definition: RooRealVar.h:40
Mother of all ROOT objects.
Definition: TObject.h:41
static void output()