text: 
  //          Copyright Oliver Kowalke 2014.
  // 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)
  
  #ifndef BOOST_CONTEXT_DETAIL_INDEX_SEQUENCE_H
  #define BOOST_CONTEXT_DETAIL_INDEX_SEQUENCE_H
  
  #include <cstddef>
  
  #include <boost/config.hpp>
  
  #include <boost/context/detail/config.hpp>
  
  #ifdef BOOST_HAS_ABI_HEADERS
  # include BOOST_ABI_PREFIX
  #endif
  
  namespace mars_boost {} namespace boost = mars_boost; namespace mars_boost {
  namespace context {
  namespace detail {
  
  #if ! defined(BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE)
  template< std::size_t ... I >
  using index_sequence = std::index_sequence< I ... >;
  template< std::size_t I >
  using make_index_sequence = std::make_index_sequence< I >;
  template< typename ... T >
  using index_sequence_for = std::index_sequence_for< T ... >;
  #else
  //http://stackoverflow.com/questions/17424477/implementation-c14-make-integer-sequence
  
  template< std::size_t ... I >
  struct index_sequence {
      using type = index_sequence;
      using value_type = std::size_t;
      static constexpr std::size_t size() {
          return sizeof ... (I);
      }
  };
  
  template< typename Seq1, typename Seq2 >
  struct concat_sequence;
  
  template< std::size_t ... I1, std::size_t ... I2 >
  struct concat_sequence< index_sequence< I1 ... >, index_sequence< I2 ... > > : public index_sequence< I1 ..., (sizeof ... (I1)+I2) ... > {
  };
  
  template< std::size_t I >
  struct make_index_sequence : public concat_sequence< typename make_index_sequence< I/2 >::type,
                                                       typename make_index_sequence< I-I/2 >::type > {
  };
  
  template<>
  struct make_index_sequence< 0 > : public index_sequence<> {
  };
  template<>
  struct make_index_sequence< 1 > : public index_sequence< 0 > {
  };
  
  template< typename ... T >
  using index_sequence_for = make_index_sequence< sizeof ... (T) >;
  #endif
  
  }}}
  
  #ifdef BOOST_HAS_ABI_HEADERS
  #include BOOST_ABI_SUFFIX
  #endif
  
  #endif // BOOST_CONTEXT_DETAIL_INDEX_SEQUENCE_H
  