/usr/include/root/RooAbsFunc.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: RooAbsFunc.h,v 1.9 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_FUNC
#define ROO_ABS_FUNC
#include "Rtypes.h"
#include <list>
class RooAbsRealLValue ;
class RooAbsFunc {
public:
inline RooAbsFunc(UInt_t dimension) : _ncall(0), _dimension(dimension), _valid(kTRUE) { }
inline RooAbsFunc(const RooAbsFunc& other) : _ncall(0), _dimension(other._dimension), _valid(kTRUE) { }
inline virtual ~RooAbsFunc() { }
inline UInt_t getDimension() const {
// Dimension of function
return _dimension;
}
inline Bool_t isValid() const {
// Is function in valid state
return _valid;
}
virtual Double_t operator()(const Double_t xvector[]) const = 0;
virtual Double_t getMinLimit(UInt_t dimension) const = 0;
virtual Double_t getMaxLimit(UInt_t dimension) const = 0;
Int_t numCall() const {
// Return number of function calls since last reset
return _ncall ;
}
void resetNumCall() const {
// Reset function call counter
_ncall = 0 ;
}
virtual void saveXVec() const {
// Interface to save current values of observables (if supported by binding implementation)
} ;
virtual void restoreXVec() const {
// Interface to restore observables to saved values (if supported
// by binding implementation)
} ;
virtual const char* getName() const {
// Name of function binding
return "(unnamed)" ;
}
virtual std::list<Double_t>* binBoundaries(Int_t) const { return 0 ; }
virtual std::list<Double_t>* plotSamplingHint(RooAbsRealLValue& /*obs*/, Double_t /*xlo*/, Double_t /*xhi*/) const {
// Interface for returning an optional hint for initial sampling points when constructing a curve
// projected on observable.
return 0 ;
}
protected:
mutable Int_t _ncall ; // Function call counter
UInt_t _dimension; // Number of observables
Bool_t _valid; // Is binding in valid state?
ClassDef(RooAbsFunc,0) // Abstract real-valued function interface
};
#endif
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