// Copyright 2002 The Trustees of Indiana University.

 // Use, modification and distribution is subject to 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)

 //  Boost.MultiArray Library

 //  Authors: Ronald Garcia

 //           Jeremy Siek

 //           Andrew Lumsdaine

 //  See http://www.boost.org/libs/multi_array for documentation.

 #ifndef BOOST_EXTENT_RANGE_RG071801_HPP

 #define BOOST_EXTENT_RANGE_RG071801_HPP

 #include <utility>

 namespace boost {

 namespace detail {

 namespace multi_array {

 template <typename Extent, typename SizeType>

 class extent_range : private std::pair<Extent,Extent> {

   typedef std::pair<Extent,Extent> super_type;

 public:

   typedef Extent index;

   typedef SizeType size_type;

   extent_range(index start, index finish) :

     super_type(start,finish) { }

   extent_range(index finish) :

     super_type(0,finish) { }

   extent_range() : super_type(0,0) { }

   index start() const { return super_type::first; }

   index finish() const { return super_type::second; }

   size_type size() const { return super_type::second - super_type::first; }

 };

 } // namespace multi_array

 } // namespace detail 

 } // namespace boost

 #endif // BOOST_EXTENT_RANGE_RG071801_HPP