Chris@16: /*
Chris@16:  [auto_generated]
Chris@16:  boost/numeric/odeint/stepper/detail/rotating_buffer.hpp
Chris@16: 
Chris@16:  [begin_description]
Chris@16:  Implemetation of a rotating (cyclic) buffer for use in the Adam Bashforth stepper
Chris@16:  [end_description]
Chris@16: 
Chris@101:  Copyright 2011 Karsten Ahnert
Chris@101:  Copyright 2011 Mario Mulansky
Chris@16: 
Chris@16:  Distributed under the Boost Software License, Version 1.0.
Chris@16:  (See accompanying file LICENSE_1_0.txt or
Chris@16:  copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: 
Chris@16: 
Chris@16: #ifndef BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED
Chris@16: #define BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED
Chris@16: 
Chris@16: #include <boost/array.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace numeric {
Chris@16: namespace odeint {
Chris@16: namespace detail {
Chris@16: 
Chris@16: template< class T , size_t N >
Chris@16: class rotating_buffer
Chris@16: {
Chris@16: public:
Chris@16: 
Chris@16:     typedef T value_type;
Chris@16:     const static size_t dim = N;
Chris@16: 
Chris@16:     rotating_buffer( void ) : m_first( 0 )
Chris@16:     { }
Chris@16: 
Chris@16:     size_t size( void ) const
Chris@16:     {
Chris@16:         return dim;
Chris@16:     }
Chris@16: 
Chris@16:     value_type& operator[]( size_t i )
Chris@16:     {
Chris@16:         return m_data[ get_index( i ) ];
Chris@16:     }
Chris@16: 
Chris@16:     const value_type& operator[]( size_t i ) const
Chris@16:     {
Chris@16:         return m_data[ get_index( i ) ];
Chris@16:     }
Chris@16: 
Chris@16:     void rotate( void )
Chris@16:     {
Chris@16:         if( m_first == 0 )
Chris@16:             m_first = dim-1;
Chris@16:         else
Chris@16:             --m_first;
Chris@16:     }
Chris@16: 
Chris@16: protected:
Chris@16: 
Chris@16:     value_type m_data[N];
Chris@16: 
Chris@16: private:
Chris@16: 
Chris@16:     size_t get_index( size_t i ) const
Chris@16:     {
Chris@16:         return ( ( i + m_first ) % dim );
Chris@16:     }
Chris@16: 
Chris@16:     size_t m_first;
Chris@16: 
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: } // detail
Chris@16: } // odeint
Chris@16: } // numeric
Chris@16: } // boost
Chris@16: 
Chris@16: 
Chris@16: #endif // BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED