ceph/src/boost/libs/compute/include/boost/compute/type_traits/is_device_iterator.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_TYPE_TRAITS_IS_DEVICE_ITERATOR_HPP
  12 #define BOOST_COMPUTE_TYPE_TRAITS_IS_DEVICE_ITERATOR_HPP
  13
  14 #include <boost/type_traits/integral_constant.hpp>
  15
  16 namespace boost {
  17 namespace compute {
  18
  19 /// Meta-function returning \c true if \c Iterator is a device-iterator.
  20 ///
  21 /// By default, this function returns false. Device iterator types (such as
  22 /// buffer_iterator) should specialize this trait and return \c true.
  23 ///
  24 /// For example:
  25 /// \code
  26 /// is_device_iterator<buffer_iterator<int>>::value == true
  27 /// is_device_iterator<std::vector<int>::iterator>::value == false
  28 /// \endcode
  29 template<class Iterator>
  30 struct is_device_iterator : boost::false_type {};
  31
  32 /// \internal_
  33 template<class Iterator>
  34 struct is_device_iterator<const Iterator> : is_device_iterator<Iterator> {};
  35
  36 } // end compute namespace
  37 } // end boost namespace
  38
  39 #endif // BOOST_COMPUTE_TYPE_TRAITS_IS_DEVICE_ITERATOR_HPP