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RooBernstein.h
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1/*
2 * Project: RooFit
3 *
4 * Copyright (c) 2024, CERN
5 *
6 * Redistribution and use in source and binary forms,
7 * with or without modification, are permitted according to the terms
8 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)
9 */
10
11#ifndef RooFit_RooBernstein_h
12#define RooFit_RooBernstein_h
13
14#include <RooAbsPdf.h>
15#include <RooAbsRealLValue.h>
16#include <RooListProxy.h>
17#include <RooRealVar.h>
18#include <RooTemplateProxy.h>
19
20#include <string>
21
22class RooBernstein : public RooAbsPdf {
23public:
24 RooBernstein() = default;
25 RooBernstein(const char *name, const char *title, RooAbsRealLValue &_x, const RooArgList &_coefList);
26
27 RooBernstein(const RooBernstein &other, const char *name = nullptr);
28
29 TObject *clone(const char *newname) const override { return new RooBernstein(*this, newname); }
30
31 Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName = nullptr) const override;
32 double analyticalIntegral(Int_t code, const char *rangeName = nullptr) const override;
33 void selectNormalizationRange(const char *rangeName = nullptr, bool force = false) override;
34
35 void translate(RooFit::Detail::CodeSquashContext &ctx) const override;
36 std::string buildCallToAnalyticIntegral(Int_t code, const char *rangeName,
37 RooFit::Detail::CodeSquashContext &ctx) const override;
38
39private:
40 void fillBuffer() const;
41 inline double xmin() const { return _buffer[_coefList.size()]; }
42 inline double xmax() const { return _buffer[_coefList.size() + 1]; }
43
46 std::string _refRangeName;
47 mutable std::vector<double> _buffer; ///<!
48
49 double evaluate() const override;
50 void doEval(RooFit::EvalContext &) const override;
51 inline bool canComputeBatchWithCuda() const override { return true; }
52
53 ClassDefOverride(RooBernstein, 2) // Bernstein polynomial PDF
54};
55
56#endif
#define ClassDefOverride(name, id)
Definition Rtypes.h:346
char name[80]
Definition TGX11.cxx:110
Storage_t::size_type size() const
Abstract interface for all probability density functions.
Definition RooAbsPdf.h:40
Abstract base class for objects that represent a real value that may appear on the left hand side of ...
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:24
Bernstein basis polynomials are positive-definite in the range [0,1].
void selectNormalizationRange(const char *rangeName=nullptr, bool force=false) override
Force use of a given normalisation range.
Int_t getAnalyticalIntegral(RooArgSet &allVars, RooArgSet &analVars, const char *rangeName=nullptr) const override
Interface function getAnalyticalIntergral advertises the analytical integrals that are supported.
std::string buildCallToAnalyticIntegral(Int_t code, const char *rangeName, RooFit::Detail::CodeSquashContext &ctx) const override
This function defines the analytical integral translation for the class.
void fillBuffer() const
TObject * clone(const char *newname) const override
RooBernstein()=default
bool canComputeBatchWithCuda() const override
std::string _refRangeName
double analyticalIntegral(Int_t code, const char *rangeName=nullptr) const override
Implements the actual analytical integral(s) advertised by getAnalyticalIntegral.
double evaluate() const override
Evaluate this PDF / function / constant. Needs to be overridden by all derived classes.
void doEval(RooFit::EvalContext &) const override
Compute multiple values of Bernstein distribution.
void translate(RooFit::Detail::CodeSquashContext &ctx) const override
This function defines a translation for each RooAbsReal based object that can be used to express the ...
double xmax() const
std::vector< double > _buffer
!
RooTemplateProxy< RooAbsRealLValue > _x
double xmin() const
RooListProxy _coefList
A class to maintain the context for squashing of RooFit models into code.
Mother of all ROOT objects.
Definition TObject.h:41