00001 /***************************************************************************** 00002 * Project: RooFit * 00003 * Package: RooFitCore * 00004 * File: $Id: RooSegmentedIntegrator1D.h,v 1.7 2007/05/11 09:11:30 verkerke Exp $ 00005 * Authors: * 00006 * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu * 00007 * DK, David Kirkby, UC Irvine, dkirkby@uci.edu * 00008 * * 00009 * Copyright (c) 2000-2005, Regents of the University of California * 00010 * and Stanford University. All rights reserved. * 00011 * * 00012 * Redistribution and use in source and binary forms, * 00013 * with or without modification, are permitted according to the terms * 00014 * listed in LICENSE (http://roofit.sourceforge.net/license.txt) * 00015 *****************************************************************************/ 00016 #ifndef ROO_SEGMENTED_INTEGRATOR_1D 00017 #define ROO_SEGMENTED_INTEGRATOR_1D 00018 00019 #include "RooAbsIntegrator.h" 00020 #include "RooIntegrator1D.h" 00021 #include "RooNumIntConfig.h" 00022 00023 class RooSegmentedIntegrator1D : public RooAbsIntegrator { 00024 public: 00025 00026 // Constructors, assignment etc 00027 RooSegmentedIntegrator1D() ; 00028 RooSegmentedIntegrator1D(const RooAbsFunc& function, const RooNumIntConfig& config) ; 00029 RooSegmentedIntegrator1D(const RooAbsFunc& function, Double_t xmin, Double_t xmax, const RooNumIntConfig& config) ; 00030 00031 virtual RooAbsIntegrator* clone(const RooAbsFunc& function, const RooNumIntConfig& config) const ; 00032 virtual ~RooSegmentedIntegrator1D(); 00033 00034 virtual Bool_t checkLimits() const; 00035 virtual Double_t integral(const Double_t *yvec=0) ; 00036 00037 using RooAbsIntegrator::setLimits ; 00038 Bool_t setLimits(Double_t *xmin, Double_t *xmax); 00039 virtual Bool_t setUseIntegrandLimits(Bool_t flag) { _useIntegrandLimits = flag ; return kTRUE ; } 00040 00041 virtual Bool_t canIntegrate1D() const { return kTRUE ; } 00042 virtual Bool_t canIntegrate2D() const { return kFALSE ; } 00043 virtual Bool_t canIntegrateND() const { return kFALSE ; } 00044 virtual Bool_t canIntegrateOpenEnded() const { return kFALSE ; } 00045 00046 protected: 00047 00048 friend class RooNumIntFactory ; 00049 static void registerIntegrator(RooNumIntFactory& fact) ; 00050 00051 mutable Double_t _xmin ; 00052 mutable Double_t _xmax ; 00053 mutable Double_t _range ; 00054 Bool_t _valid ; 00055 Int_t _nseg ; // Number of segments 00056 Bool_t _useIntegrandLimits ; 00057 00058 RooNumIntConfig _config ; 00059 RooIntegrator1D** _array ; // Array of segment integrators 00060 00061 Bool_t initialize(); 00062 00063 ClassDef(RooSegmentedIntegrator1D,0) // 1-dimensional piece-wise numerical integration engine 00064 }; 00065 00066 #endif
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