RandnScalar.h

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/*
 * Copyright (C) 2006-2020 Istituto Italiano di Tecnologia (IIT)
 * Copyright (C) 2006-2010 RobotCub Consortium
 * All rights reserved.
 *
 * This software may be modified and distributed under the terms of the
 * BSD-3-Clause license. See the accompanying LICENSE file for details.
 */
 
#ifndef YARP_MATH_RANDNSCALAR_H
#define YARP_MATH_RANDNSCALAR_H
 
#include <yarp/math/RandScalar.h>
#include <yarp/math/api.h>
 
namespace yarp {
    namespace math {
            class RandnScalar;
    }
}
 
class YARP_math_API yarp::math::RandnScalar
{
    void *impl;
    long seed;
 
    double y[2];            // required by the boxmuller transform
    bool executeBoxMuller;  // boxMuller transform generates two mubers at the time, this flag determines when to re-use previous.
 
private:
    RandnScalar(const RandnScalar &l);
 
    inline void boxMuller();
public:
    RandnScalar();
    ~RandnScalar();
 
    RandnScalar(int seed);
 
    void init();
 
    void init (int seed);
 
    long getSeed ()
    { return seed; }
 
    double get(double u=0.0, double sigma=1.0);
};
 
#endif // YARP_MATH_RANDNSCALAR_H