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/*************************************************************************
* Copyright (C) 2009-2010 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The vZ Library. *
* *
* The vZ Library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The vZ 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
#ifndef VZ_SIMPLE_HPP
#define VZ_SIMPLE_HPP
#include <vector>
namespace vZ
{
// Base class for non-adaptive RK-style algorithms
template <typename Y>
class GenericSimpleIntegrator : public GenericRKIntegrator<Y>
{
public:
typedef typename GenericRKIntegrator<Y>::Scalar Scalar;
typedef typename GenericRKIntegrator<Y>::Function Function;
protected:
typedef typename GenericRKIntegrator<Y>::ACoefficients ACoefficients;
typedef typename GenericRKIntegrator<Y>::BCoefficients BCoefficients;
typedef typename GenericRKIntegrator<Y>::KVector KVector;
GenericSimpleIntegrator(Function f, ACoefficients a, BCoefficients b)
: GenericRKIntegrator<Y>(f), m_a(a), m_b(b) { }
virtual ~GenericSimpleIntegrator() { }
void step();
private:
ACoefficients m_a;
BCoefficients m_b;
};
// Type alias
typedef GenericSimpleIntegrator<double> SimpleIntegrator;
// Implementations
template <typename Y>
void
GenericSimpleIntegrator<Y>::step()
{
this->y(calculateY(calculateK(m_a), m_b));
this->x(this->x() + this->h());
}
}
#endif // VZ_SIMPLE_HPP
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