/usr/include/root/RooInvTransform.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
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* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooInvTransform.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_INV_TRANSFORM
#define ROO_INV_TRANSFORM
#include "RooAbsFunc.h"
class RooInvTransform : public RooAbsFunc {
public:
RooInvTransform(const RooAbsFunc &func);
inline virtual ~RooInvTransform() { }
inline virtual Double_t operator()(const Double_t xvector[]) const {
Double_t xinv= 1./xvector[0];
return (*_func)(&xinv)*xinv*xinv;
}
inline virtual Double_t getMinLimit(UInt_t index) const { return 1/_func->getMaxLimit(index); }
inline virtual Double_t getMaxLimit(UInt_t index) const { return 1/_func->getMinLimit(index); }
protected:
const RooAbsFunc *_func; // Input function binding
ClassDef(RooInvTransform,0) // Function binding returning inverse of other function binding
};
#endif
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