/usr/include/root/RooBrentRootFinder.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: RooBrentRootFinder.h,v 1.6 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_BRENT_ROOT_FINDER
#define ROO_BRENT_ROOT_FINDER
#include "RooAbsRootFinder.h"
class RooBrentRootFinder : public RooAbsRootFinder {
public:
RooBrentRootFinder(const RooAbsFunc& function);
inline virtual ~RooBrentRootFinder() { }
virtual Bool_t findRoot(Double_t &result, Double_t xlo, Double_t xhi, Double_t value= 0) const;
void setTol(Double_t tol) {
// Set convergence tolerance parameter
_tol = tol ;
}
protected:
enum { MaxIterations = 512 };
Double_t _tol ;
ClassDef(RooBrentRootFinder,0) // Abstract interface for 1-dim real-valued function root finders
};
#endif
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