/usr/include/root/RooGrid.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: RooGrid.h,v 1.10 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_GRID
#define ROO_GRID
#include "TObject.h"
#include "RooPrintable.h"
class RooAbsFunc;
class RooGrid : public TObject, public RooPrintable {
public:
RooGrid() ;
RooGrid(const RooAbsFunc &function);
virtual ~RooGrid();
// Printing interface
virtual void printName(ostream& os) const ;
virtual void printTitle(ostream& os) const ;
virtual void printClassName(ostream& os) const ;
virtual void printMultiline(ostream& os, Int_t contents, Bool_t verbose=kFALSE, TString indent="") const;
inline virtual void Print(Option_t *options= 0) const {
printStream(defaultPrintStream(),defaultPrintContents(options),defaultPrintStyle(options));
}
inline Bool_t isValid() const { return _valid; }
inline UInt_t getDimension() const { return _dim; }
inline Double_t getVolume() const { return _vol; }
inline UInt_t getNBins() const { return _bins; }
inline UInt_t getNBoxes() const { return _boxes; }
inline void setNBoxes(UInt_t boxes) { _boxes= boxes; }
inline Double_t *createPoint() const { return _valid ? new Double_t[_dim] : 0; }
inline UInt_t *createIndexVector() const { return _valid ? new UInt_t[_dim] : 0; }
Bool_t initialize(const RooAbsFunc &function);
void resize(UInt_t bins);
void resetValues();
void generatePoint(const UInt_t box[], Double_t x[], UInt_t bin[],
Double_t &vol, Bool_t useQuasiRandom= kTRUE) const;
void accumulate(const UInt_t bin[], Double_t amount);
void refine(Double_t alpha= 1.5);
void firstBox(UInt_t box[]) const;
Bool_t nextBox(UInt_t box[]) const;
enum { maxBins = 50 }; // must be even
// Accessor for the j-th normalized grid point along the i-th dimension
public:
inline Double_t coord(Int_t i, Int_t j) const { return _xi[i*_dim + j]; }
inline Double_t value(Int_t i,Int_t j) const { return _d[i*_dim + j]; }
protected:
inline Double_t& coord(Int_t i, Int_t j) { return _xi[i*_dim + j]; }
inline Double_t& value(Int_t i,Int_t j) { return _d[i*_dim + j]; }
inline Double_t& newCoord(Int_t i) { return _xin[i]; }
protected:
Bool_t _valid; // Is configuration valid
UInt_t _dim,_bins,_boxes; // Number of dimensions, bins and boxes
Double_t _vol; // Volume
Double_t *_xl; //! Internal workspace
Double_t *_xu; //! Internal workspace
Double_t *_delx; //! Internal workspace
Double_t *_d; //! Internal workspace
Double_t *_xi; //! Internal workspace
Double_t *_xin; //! Internal workspace
Double_t *_weight; //! Internal workspace
ClassDef(RooGrid,1) // Utility class for RooMCIntegrator holding a multi-dimensional grid
};
#endif
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