source: cpp/frams/neuro/impl/neuroimpl-simple.h

// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2015  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#ifndef _NEUROIMPLSIMPLE_H_
#define _NEUROIMPLSIMPLE_H_

#include <frams/neuro/neuroimpl.h>
#include <common/nonstd_math.h>

extern ParamEntry NI_StdNeuron_tab[];

class NI_StdNeuron : public NeuroImpl
{
protected:
        double istate, velocity;
        void calcInternalState();
        virtual void calcOutput();
public:
        double inertia, force, sigmo;
        NI_StdNeuron() :velocity(0), inertia(0), force(0), sigmo(0)
        {
                paramentries = NI_StdNeuron_tab;
        }
        NeuroImpl* makeNew() { return new NI_StdNeuron(); } // for NeuroFactory
        int lateinit();
        void go();
};

extern ParamEntry NI_StdUNeuron_tab[];

class NI_StdUNeuron : public NI_StdNeuron
{
public:
        NI_StdUNeuron()
        {
                paramentries = NI_StdUNeuron_tab;
        }
        NeuroImpl* makeNew() { return new NI_StdUNeuron(); } // for NeuroFactory
        void calcOutput();
};

class NI_Const : public NeuroImpl
{
public:
        NeuroImpl* makeNew() { return new NI_Const(); } // for NeuroFactory
        int lateinit()
        {
                neuro->state = newstate = 1.0;
                simorder = 0;
                return 1;
        }
};

class NI_Diff : public NeuroImpl
{
        double previous;
public:
        NeuroImpl* makeNew() { return new NI_Diff(); };

        void go()
        {
                double s = getWeightedInputSum();
                setState(s - previous);
                previous = s;
        }
        int lateinit()
        {
                NeuroImpl::lateinit();
                previous = neuro->state;
                return 1;
        }
};

class NI_Random : public NeuroImpl
{
public:
        NeuroImpl* makeNew() { return new NI_Random(); };
        void go() { setState(rndDouble(2) - 1.0); }
};

extern ParamEntry NI_Sinus_tab[];

class NI_Sinus : public NeuroImpl
{
public:
        double f0, t;
        NeuroImpl* makeNew() { return new NI_Sinus(); };
        NI_Sinus() :f0(0), t(0)
        {
                paramentries = NI_Sinus_tab;
        }
        void go()
        {
                t += f0 + getWeightedInputSum();
                setState(sin(t));
        }
};

#endif