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/*
* Copyright 2011-2013 Mario Mulansky
* Copyright 2012 Karsten Ahnert
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or
* copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#include <iostream>
#include <boost/numeric/odeint.hpp>
#include <boost/numeric/ublas/vector.hpp>
typedef boost::numeric::ublas::vector< double > state_type;
void lorenz( const state_type &x , state_type &dxdt , const double t )
{
const double sigma( 10.0 );
const double R( 28.0 );
const double b( 8.0 / 3.0 );
dxdt[0] = sigma * ( x[1] - x[0] );
dxdt[1] = R * x[0] - x[1] - x[0] * x[2];
dxdt[2] = -b * x[2] + x[0] * x[1];
}
using namespace boost::numeric::odeint;
//[ublas_main
int main()
{
state_type x(3);
x[0] = 10.0; x[1] = 5.0 ; x[2] = 0.0;
typedef runge_kutta_dopri5< state_type > stepper;
integrate_const( make_dense_output< stepper >( 1E-6 , 1E-6 ) , lorenz , x ,
0.0 , 10.0 , 0.1 );
}
//]
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