ceph/src/boost/libs/thread/include/boost/thread/detail/is_convertible.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // Copyright (C) 2011-2013 Vicente J. Botet Escriba
   4 //
   5 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   6 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 // See http://www.boost.org/libs/thread for documentation.
   9 //
  10 //////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef BOOST_THREAD_DETAIL_IS_CONVERTIBLE_HPP
  13 #define BOOST_THREAD_DETAIL_IS_CONVERTIBLE_HPP
  14
  15 #include <boost/type_traits/is_convertible.hpp>
  16 #include <boost/thread/detail/move.hpp>
  17
  18 namespace boost
  19 {
  20   namespace thread_detail
  21   {
  22     template <typename T1, typename T2>
  23     struct is_convertible : boost::is_convertible<T1,T2> {};
  24
  25 #if defined  BOOST_NO_CXX11_RVALUE_REFERENCES
  26
  27 #if defined(BOOST_INTEL_CXX_VERSION) && (BOOST_INTEL_CXX_VERSION <= 1300)
  28
  29 #if defined BOOST_THREAD_USES_MOVE
  30     template <typename T1, typename T2>
  31     struct is_convertible<
  32       rv<T1> &,
  33       rv<rv<T2> > &
  34     > : false_type {};
  35 #endif
  36
  37 #elif defined __GNUC__ && (__GNUC__ < 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ <= 4 ))
  38
  39     template <typename T1, typename T2>
  40     struct is_convertible<T1&, T2&> : boost::is_convertible<T1, T2> {};
  41 #endif
  42
  43 #endif
  44   }
  45
  46 } // namespace boost
  47
  48
  49 #endif //  BOOST_THREAD_DETAIL_MEMORY_HPP