/usr/include/root/RooVoigtian.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: RooFitModels *
* File: $Id: RooVoigtian.h,v 1.7 2007/07/12 20:30:49 wouter Exp $
* Authors: *
* TS, Thomas Schietinger, SLAC, schieti@slac.stanford.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_VOIGTIAN
#define ROO_VOIGTIAN
#include "RooAbsPdf.h"
#include "RooRealProxy.h"
class RooRealVar;
class RooVoigtian : public RooAbsPdf {
public:
RooVoigtian() {} ;
RooVoigtian(const char *name, const char *title,
RooAbsReal& _x, RooAbsReal& _mean,
RooAbsReal& _width, RooAbsReal& _sigma,
Bool_t doFast = kFALSE);
RooVoigtian(const RooVoigtian& other, const char* name=0) ;
virtual TObject* clone(const char* newname) const { return new RooVoigtian(*this,newname); }
inline virtual ~RooVoigtian() { }
// These methods allow the user to select the fast evaluation
// of the complex error function using look-up tables
// (default is the "slow" CERNlib algorithm)
inline void selectFastAlgorithm() { _doFast = kTRUE; }
inline void selectDefaultAlgorithm() { _doFast = kFALSE; }
protected:
RooRealProxy x ;
RooRealProxy mean ;
RooRealProxy width ;
RooRealProxy sigma ;
Double_t evaluate() const ;
private:
Double_t _invRootPi;
Bool_t _doFast;
ClassDef(RooVoigtian,1) // Voigtian PDF (Gauss (x) BreitWigner)
};
#endif
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