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1 | /* |
2 | [auto_generated] | |
3 | boost/numeric/odeint/stepper/detail/rotating_buffer.hpp | |
4 | ||
5 | [begin_description] | |
6 | Implemetation of a rotating (cyclic) buffer for use in the Adam Bashforth stepper | |
7 | [end_description] | |
8 | ||
9 | Copyright 2011 Karsten Ahnert | |
10 | Copyright 2011 Mario Mulansky | |
11 | ||
12 | Distributed under the Boost Software License, Version 1.0. | |
13 | (See accompanying file LICENSE_1_0.txt or | |
14 | copy at http://www.boost.org/LICENSE_1_0.txt) | |
15 | */ | |
16 | ||
17 | ||
18 | #ifndef BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED | |
19 | #define BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED | |
20 | ||
21 | #include <boost/array.hpp> | |
22 | ||
23 | namespace boost { | |
24 | namespace numeric { | |
25 | namespace odeint { | |
26 | namespace detail { | |
27 | ||
28 | template< class T , size_t N > | |
29 | class rotating_buffer | |
30 | { | |
31 | public: | |
32 | ||
33 | typedef T value_type; | |
34 | const static size_t dim = N; | |
35 | ||
36 | rotating_buffer( void ) : m_first( 0 ) | |
37 | { } | |
38 | ||
39 | size_t size( void ) const | |
40 | { | |
41 | return dim; | |
42 | } | |
43 | ||
44 | value_type& operator[]( size_t i ) | |
45 | { | |
46 | return m_data[ get_index( i ) ]; | |
47 | } | |
48 | ||
49 | const value_type& operator[]( size_t i ) const | |
50 | { | |
51 | return m_data[ get_index( i ) ]; | |
52 | } | |
53 | ||
54 | void rotate( void ) | |
55 | { | |
56 | if( m_first == 0 ) | |
57 | m_first = dim-1; | |
58 | else | |
59 | --m_first; | |
60 | } | |
61 | ||
62 | protected: | |
63 | ||
64 | value_type m_data[N]; | |
65 | ||
66 | private: | |
67 | ||
68 | size_t get_index( size_t i ) const | |
69 | { | |
70 | return ( ( i + m_first ) % dim ); | |
71 | } | |
72 | ||
73 | size_t m_first; | |
74 | ||
75 | }; | |
76 | ||
77 | ||
78 | } // detail | |
79 | } // odeint | |
80 | } // numeric | |
81 | } // boost | |
82 | ||
83 | ||
84 | #endif // BOOST_NUMERIC_ODEINT_STEPPER_DETAIL_ROTATING_BUFFER_HPP_INCLUDED |