Integrator.h

/*
 * This file is part of libsidplayfp, a SID player engine.
 *
 * Copyright 2011-2024 Leandro Nini <drfiemost@users.sourceforge.net>
 * Copyright 2007-2010 Antti Lankila
 * Copyright 2004, 2010 Dag Lem <resid@nimrod.no>
 *
 * This program 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 program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifndef INTEGRATOR_H
#define INTEGRATOR_H

#include <cstdint>

namespace reSIDfp
{

class Integrator
{
protected:
    mutable int32_t vx;
    mutable int32_t vc;

    Integrator() :
        vx(0),
        vc(0) {}

public:
    virtual int32_t solve(int32_t vi) const = 0;

    virtual ~Integrator() = default;

    void restart() { vx = 16384; vc = 16384; }
};

} // namespace reSIDfp

#endif