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2 * Project: RooFit *
3 * Package: RooFitModels *
4 * File: $Id: RooGaussian.h,v 1.16 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_GAUSSIAN
17#define ROO_GAUSSIAN
19#include "RooAbsPdf.h"
20#include "RooRealProxy.h"
22class RooAbsReal;
24class RooGaussian : public RooAbsPdf {
27 // Original constructor without RooAbsReal::Ref for backwards compatibility.
28 inline RooGaussian(const char *name, const char *title,
29 RooAbsReal& _x, RooAbsReal& _mean, RooAbsReal& _sigma)
30 : RooGaussian{name, title, RooAbsReal::Ref{_x}, RooAbsReal::Ref{_mean}, RooAbsReal::Ref{_sigma}} {}
31 RooGaussian(const char *name, const char *title,
33 RooGaussian(const RooGaussian& other, const char* name=nullptr);
34 TObject* clone(const char* newname) const override {
35 return new RooGaussian(*this,newname);
36 }
37 inline ~RooGaussian() override { }
39 Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=nullptr) const override;
40 double analyticalIntegral(Int_t code, const char* rangeName=nullptr) const override;
42 Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, bool staticInitOK=true) const override;
43 void generateEvent(Int_t code) override;
45 /// Get the x variable.
46 RooAbsReal const& getX() const { return x.arg(); }
48 /// Get the mean parameter.
49 RooAbsReal const& getMean() const { return mean.arg(); }
51 /// Get the sigma parameter.
52 RooAbsReal const& getSigma() const { return sigma.arg(); }
60 double evaluate() const override;
61 void computeBatch(cudaStream_t*, double* output, size_t size, RooFit::Detail::DataMap const&) const override;
62 inline bool canComputeBatchWithCuda() const override { return true; }
66 ClassDefOverride(RooGaussian,1) // Gaussian PDF
size_t size(const MatrixT &matrix)
retrieve the size of a square matrix
#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
Plain Gaussian p.d.f.
Definition: RooGaussian.h:24
TObject * clone(const char *newname) const override
Definition: RooGaussian.h:34
~RooGaussian() override
Definition: RooGaussian.h:37
RooGaussian(const char *name, const char *title, RooAbsReal &_x, RooAbsReal &_mean, RooAbsReal &_sigma)
Definition: RooGaussian.h:28
RooRealProxy mean
Definition: RooGaussian.h:57
double analyticalIntegral(Int_t code, const char *rangeName=nullptr) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
Definition: RooGaussian.cxx:84
RooAbsReal const & getX() const
Get the x variable.
Definition: RooGaussian.h:46
void generateEvent(Int_t code) override
Interface for generation of an event using the algorithm corresponding to the specified code.
void computeBatch(cudaStream_t *, double *output, size_t size, RooFit::Detail::DataMap const &) const override
Compute multiple values of Gaussian distribution.
Definition: RooGaussian.cxx:66
RooRealProxy sigma
Definition: RooGaussian.h:58
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...
RooAbsReal const & getMean() const
Get the mean parameter.
Definition: RooGaussian.h:49
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
Definition: RooGaussian.cxx:75
double evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
Definition: RooGaussian.cxx:56
bool canComputeBatchWithCuda() const override
Definition: RooGaussian.h:62
RooRealProxy x
Definition: RooGaussian.h:56
RooAbsReal const & getSigma() const
Get the sigma parameter.
Definition: RooGaussian.h:52
const T & arg() const
Return reference to object held in proxy.
Mother of all ROOT objects.
Definition: TObject.h:41
static void output()