1 // Copyright 2002 The Trustees of Indiana University.
2 
3 // Use, modification and distribution is subject to the Boost Software
4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 
7 //  Boost.MultiArray Library
8 //  Authors: Ronald Garcia
9 //           Jeremy Siek
10 //           Andrew Lumsdaine
11 //  See http://www.boost.org/libs/multi_array for documentation.
12 
13 #ifndef BOOST_EXTENT_RANGE_RG071801_HPP
14 #define BOOST_EXTENT_RANGE_RG071801_HPP
15 
16 #include <utility>
17 
18 namespace boost {
19 namespace detail {
20 namespace multi_array {
21 
22 template <typename Extent, typename SizeType>
23 class extent_range : private std::pair<Extent,Extent> {
24   typedef std::pair<Extent,Extent> super_type;
25 public:
26   typedef Extent index;
27   typedef SizeType size_type;
28 
extent_range(index start,index finish)29   extent_range(index start, index finish) :
30     super_type(start,finish) { }
31 
extent_range(index finish)32   extent_range(index finish) :
33     super_type(0,finish) { }
34 
extent_range()35   extent_range() : super_type(0,0) { }
36 
start() const37   index start() const { return super_type::first; }
38 
finish() const39   index finish() const { return super_type::second; }
40 
size() const41   size_type size() const { return super_type::second - super_type::first; }
42 };
43 
44 } // namespace multi_array
45 } // namespace detail
46 } // namespace boost
47 
48 
49 #endif // BOOST_EXTENT_RANGE_RG071801_HPP
50