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RooSegmentedIntegrator1D.h
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1/*****************************************************************************
2 * Project: RooFit *
3 * Package: RooFitCore *
4 * File: $Id: RooSegmentedIntegrator1D.h,v 1.7 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_SEGMENTED_INTEGRATOR_1D
17#define ROO_SEGMENTED_INTEGRATOR_1D
18
19#include "RooAbsIntegrator.h"
20#include "RooIntegrator1D.h"
21#include "RooNumIntConfig.h"
22
24public:
25
26 // Constructors, assignment etc
30
31 virtual RooAbsIntegrator* clone(const RooAbsFunc& function, const RooNumIntConfig& config) const ;
33
34 virtual Bool_t checkLimits() const;
35 virtual Double_t integral(const Double_t *yvec=0) ;
36
39 virtual Bool_t setUseIntegrandLimits(Bool_t flag) { _useIntegrandLimits = flag ; return kTRUE ; }
40
41 virtual Bool_t canIntegrate1D() const { return kTRUE ; }
42 virtual Bool_t canIntegrate2D() const { return kFALSE ; }
43 virtual Bool_t canIntegrateND() const { return kFALSE ; }
44 virtual Bool_t canIntegrateOpenEnded() const { return kFALSE ; }
45
46protected:
47
48 friend class RooNumIntFactory ;
49 static void registerIntegrator(RooNumIntFactory& fact) ;
50
51 mutable Double_t _xmin ;
52 mutable Double_t _xmax ;
53 mutable Double_t _range ;
55 Int_t _nseg ; // Number of segments
57
59 RooIntegrator1D** _array ; // Array of segment integrators
60
62
63 ClassDef(RooSegmentedIntegrator1D,0) // 1-dimensional piece-wise numerical integration engine
64};
65
66#endif
int Int_t
Definition: RtypesCore.h:43
const Bool_t kFALSE
Definition: RtypesCore.h:90
bool Bool_t
Definition: RtypesCore.h:61
double Double_t
Definition: RtypesCore.h:57
const Bool_t kTRUE
Definition: RtypesCore.h:89
#define ClassDef(name, id)
Definition: Rtypes.h:322
float xmin
Definition: THbookFile.cxx:93
float xmax
Definition: THbookFile.cxx:93
Abstract interface for evaluating a real-valued function of one real variable and performing numerica...
Definition: RooAbsFunc.h:23
RooAbsIntegrator is the abstract interface for integrators of real-valued functions that implement th...
virtual Bool_t setLimits(Double_t *, Double_t *)
RooIntegrator1D implements an adaptive one-dimensional numerical integration algorithm.
RooNumIntConfig holds the configuration parameters of the various numeric integrators used by RooReal...
RooNumIntFactory is a factory to instantiate numeric integrators from a given function binding and a ...
RooSegmentedIntegrator1D implements an adaptive one-dimensional numerical integration algorithm.
static void registerIntegrator(RooNumIntFactory &fact)
Register RooSegmentedIntegrator1D, its parameters, dependencies and capabilities with RooNumIntFactor...
Bool_t setLimits(Double_t *xmin, Double_t *xmax)
Change our integration limits.
virtual Bool_t setUseIntegrandLimits(Bool_t flag)
Interface function that allows to defer limit definition to integrand definition.
virtual ~RooSegmentedIntegrator1D()
Destructor.
virtual Bool_t canIntegrate2D() const
virtual Bool_t canIntegrate1D() const
Bool_t initialize()
One-time integrator initialization.
virtual Double_t integral(const Double_t *yvec=0)
Evaluate integral at given function binding parameter values.
virtual RooAbsIntegrator * clone(const RooAbsFunc &function, const RooNumIntConfig &config) const
Virtual constructor with given function and configuration. Needed by RooNumIntFactory.
virtual Bool_t canIntegrateND() const
virtual Bool_t checkLimits() const
Check that our integration range is finite and otherwise return kFALSE.
virtual Bool_t canIntegrateOpenEnded() const
void function(const Char_t *name_, T fun, const Char_t *docstring=0)
Definition: RExports.h:151