/usr/include/root/Math/GSLQuasiRandom.h is in libroot-math-mathmore-dev 5.34.14-1build1.
This file is owned by root:root, with mode 0o644.
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// Author: L. Moneta, A. Zsenei 08/2005
/**********************************************************************
* *
* Copyright (c) 2004 ROOT Foundation, CERN/PH-SFT *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this library (see file COPYING); if not, write *
* to the Free Software Foundation, Inc., 59 Temple Place, Suite *
* 330, Boston, MA 02111-1307 USA, or contact the author. *
* *
**********************************************************************/
// Header file for class GSLQuasiRandom
//
// Created by: moneta at Sun Nov 21 16:26:03 2004
//
// Last update: Sun Nov 21 16:26:03 2004
//
#ifndef ROOT_Math_GSLQuasiRandom
#define ROOT_Math_GSLQuasiRandom
#include <string>
#include <vector>
namespace ROOT {
namespace Math {
class GSLQRngWrapper;
//_________________________________________________________________
/**
GSLQuasiRandomEngine
Base class for all GSL quasi random engines,
normally user instantiate the derived classes
which creates internally the generator and uses the class ROOT::Math::QuasiRandom
@ingroup Random
*/
class GSLQuasiRandomEngine {
public:
/**
default constructor. No creation of rng is done.
If then Initialize() is called an engine is created
based on default GSL type (MT)
*/
GSLQuasiRandomEngine();
/**
create from an existing rng.
User manage the rng pointer which is then deleted olny by calling Terminate()
*/
GSLQuasiRandomEngine( GSLQRngWrapper * rng);
/**
Copy constructor : clone the contained GSL generator
*/
GSLQuasiRandomEngine(const GSLQuasiRandomEngine & eng);
/**
Assignment operator : make a deep copy of the contained GSL generator
*/
GSLQuasiRandomEngine & operator=(const GSLQuasiRandomEngine & eng);
/**
initialize the generator giving the dimension of the sequence
If no rng is present the default one based on Mersenne and Twister is created
*/
void Initialize(unsigned int dimension);
/**
delete pointer to contained rng
*/
void Terminate();
/**
call Terminate()
*/
virtual ~GSLQuasiRandomEngine();
/**
Generate a random number between ]0,1[
*/
double operator() () const;
/**
Fill array x with random numbers between ]0,1[
*/
bool operator() (double * x) const;
/**
Skip the next n random numbers
*/
bool Skip(unsigned int n) const;
/**
Generate an array of quasi random numbers
The iterators points to the random numbers
*/
bool GenerateArray(double * begin, double * end) const;
/**
return name of generator
*/
std::string Name() const;
/**
return the state size of generator
*/
unsigned int Size() const;
/**
return the dimension of generator
*/
unsigned int NDim() const;
protected:
/// internal method used by the derived class to set the type of generators
void SetType(GSLQRngWrapper * r) {
fQRng = r;
}
private:
GSLQRngWrapper * fQRng; // pointer to GSL generator wrapper (managed by the class)
};
//_____________________________________________________________________________________
/**
Sobol generator
gsl_qrng_sobol from
<A HREF="http://www.gnu.org/software/gsl/manual/html_node/Quasi_002drandom-number-generator-algorithms.html#Quasi_002drandom-number-generator-algorithms">here</A>
@ingroup Random
*/
class GSLQRngSobol : public GSLQuasiRandomEngine {
public:
GSLQRngSobol();
};
//_____________________________________________________________________________________
/**
Niederreiter generator
gsl_qrng_niederreiter_2 from
<A HREF="http://www.gnu.org/software/gsl/manual/html_node/Quasi_002drandom-number-generator-algorithms.html#Quasi_002drandom-number-generator-algorithms">here</A>
@ingroup Random
*/
class GSLQRngNiederreiter2 : public GSLQuasiRandomEngine {
public:
GSLQRngNiederreiter2();
};
} // namespace Math
} // namespace ROOT
#endif /* ROOT_Math_GSLQuasiRandom */
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