/usr/include/root/RooAbsIntegrator.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooAbsIntegrator.h,v 1.18 2007/05/11 09:11:30 verkerke Exp $
* Authors: *
* WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
* DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
* *
* Copyright (c) 2000-2005, Regents of the University of California *
* and Stanford University. All rights reserved. *
* *
* Redistribution and use in source and binary forms, *
* with or without modification, are permitted according to the terms *
* listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
*****************************************************************************/
#ifndef ROO_ABS_INTEGRATOR
#define ROO_ABS_INTEGRATOR
#include "RooAbsFunc.h"
#include "RooNumIntConfig.h"
class RooAbsIntegrator : public TObject {
public:
RooAbsIntegrator() ;
RooAbsIntegrator(const RooAbsFunc& function, Bool_t printEvalCounter=kFALSE);
inline virtual ~RooAbsIntegrator() {
// Destructor
}
virtual RooAbsIntegrator* clone(const RooAbsFunc& function, const RooNumIntConfig& config) const = 0 ;
inline Bool_t isValid() const {
// Is integrator in valid state
return _valid;
}
inline Double_t integrand(const Double_t x[]) const {
// Return value of integrand at given observable values
return (*_function)(x);
}
inline const RooAbsFunc *integrand() const {
// Return integrand function binding
return _function;
}
inline virtual Bool_t checkLimits() const {
// If true, finite limits are required on the observable range
return kTRUE;
}
Double_t calculate(const Double_t *yvec=0) ;
virtual Double_t integral(const Double_t *yvec=0)=0 ;
virtual Bool_t canIntegrate1D() const = 0 ;
virtual Bool_t canIntegrate2D() const = 0 ;
virtual Bool_t canIntegrateND() const = 0 ;
virtual Bool_t canIntegrateOpenEnded() const = 0 ;
Bool_t printEvalCounter() const { return _printEvalCounter ; }
void setPrintEvalCounter(Bool_t value) { _printEvalCounter = value ; }
virtual Bool_t setLimits(Double_t*, Double_t*) { return kFALSE ; }
virtual Bool_t setLimits(Double_t xmin, Double_t xmax) ;
virtual Bool_t setUseIntegrandLimits(Bool_t flag) ;
protected:
const RooAbsFunc *_function; // Pointer to function binding of integrand
Bool_t _valid; // Is integrator in valid state?
Bool_t _printEvalCounter ; // If true print number of function evaluation required for integration
ClassDef(RooAbsIntegrator,0) // Abstract interface for real-valued function integrators
};
#endif
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