EulerTrace.h

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/* 
* Copyright 2014-2018 Friedemann Zenke
*
* This file is part of Auryn, a simulation package for plastic
* spiking neural networks.
* 
* Auryn 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 3 of the License, or
* (at your option) any later version.
* 
* Auryn 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 Auryn.  If not, see <http://www.gnu.org/licenses/>.
*
* If you are using Auryn or parts of it for your work please cite:
* Zenke, F. and Gerstner, W., 2014. Limits to high-speed simulations 
* of spiking neural networks using general-purpose computers. 
* Front Neuroinform 8, 76. doi: 10.3389/fninf.2014.00076
*/

#ifndef EULERTRACE_H_
#define EULERTRACE_H_

#include "Trace.h"
#include "auryn_definitions.h"

namespace auryn {

class EulerTrace : public Trace
{
private:
        typedef Trace super;
        AurynStateVector * target_ptr;

        AurynStateVector * temp;

        AurynFloat scale_const;

        AurynFloat mul_follow;

        void init(NeuronID n, AurynFloat timeconstant);
        void free();

        void check_size(NeuronID x)
        {
#ifndef NDEBUG
                if ( x >= size ) {
                        throw AurynVectorDimensionalityException();
                }
#endif 
        };

public:
        EulerTrace(NeuronID n, AurynFloat timeconstant);
        virtual ~EulerTrace();

        void evolve();

        void set_timeconstant( AurynFloat timeconstant );

        void set_target( AurynStateVector * target );

        void follow();
};

} // namespace

#endif /*EULERTRACE_H_*/