/* * Copyright 2009-2012 Karsten Ahnert * Copyright 2009-2012 Mario Mulansky * * 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 <cmath> #include <boost/array.hpp> template< size_t N > struct phase_lattice { typedef double value_type; typedef boost::array< value_type , N > state_type; value_type m_epsilon; state_type m_omega; phase_lattice() : m_epsilon( 6.0/(N*N) ) // should be < 8/N^2 to see phase locking { for( size_t i=1 ; i<N-1 ; ++i ) m_omega[i] = m_epsilon*(N-i); } void inline operator()( const state_type &x , state_type &dxdt , const double t ) const { double c = 0.0; for( size_t i=0 ; i<N-1 ; ++i ) { dxdt[i] = m_omega[i] + c; c = ( x[i+1] - x[i] ); dxdt[i] += c; } //dxdt[N-1] = m_omega[N-1] + sin( x[N-1] - x[N-2] ); } };