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34 lines
737 B
C++
34 lines
737 B
C++
/*
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* lorenz.hpp
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*
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* Copyright 2011 Mario Mulansky
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* Copyright 2012 Karsten Ahnert
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*
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or
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* copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef LORENZ_HPP_
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#define LORENZ_HPP_
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#include <boost/array.hpp>
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struct lorenz
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{
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template< class state_type >
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void inline operator()( const state_type &x , state_type &dxdt , const double t ) const
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{
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const double sigma = 10.0;
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const double R = 28.0;
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const double b = 8.0 / 3.0;
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dxdt[0] = sigma * ( x[1] - x[0] );
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dxdt[1] = R * x[0] - x[1] - x[0] * x[2];
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dxdt[2] = x[0]*x[1] - b * x[2];
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}
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};
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#endif /* LORENZ_HPP_ */
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