/usr/include/root/RooQuasiRandomGenerator.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: RooQuasiRandomGenerator.h,v 1.7 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_QUASI_RANDOM_GENERATOR
#define ROO_QUASI_RANDOM_GENERATOR
#include "Rtypes.h"
class RooQuasiRandomGenerator {
public:
RooQuasiRandomGenerator();
virtual ~RooQuasiRandomGenerator();
void reset();
Bool_t generate(UInt_t dimension, Double_t vector[]);
enum { MaxDimension = 12 , NBits = 31 , MaxDegree = 50 , MaxPrimitiveDegree = 5 };
protected:
void calculateCoefs(UInt_t dimension);
void calculateV(const int px[], int px_degree,
int pb[], int * pb_degree, int v[], int maxv);
void polyMultiply(const int pa[], int pa_degree, const int pb[],
int pb_degree, int pc[], int * pc_degree);
// Z_2 field operations
inline Int_t add(Int_t x, Int_t y) const { return (x+y)%2; }
inline Int_t mul(Int_t x, Int_t y) const { return (x*y)%2; }
inline Int_t sub(Int_t x, Int_t y) const { return add(x,y); }
private:
Int_t *_nextq;
Int_t _sequenceCount;
static Bool_t _coefsCalculated;
static Int_t _cj[NBits][MaxDimension];
static const Int_t _primitivePoly[MaxDimension+1][MaxPrimitiveDegree+1];
static const Int_t _polyDegree[MaxDimension+1];
ClassDef(RooQuasiRandomGenerator,0) // Quasi-random number generator
};
#endif
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