ceph/src/boost/boost/compute/functional/convert.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013 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_FUNCTIONAL_CONVERT_HPP
  12 #define BOOST_COMPUTE_FUNCTIONAL_CONVERT_HPP
  13
  14 namespace boost {
  15 namespace compute {
  16 namespace detail {
  17
  18 template<class T, class Arg>
  19 struct invoked_convert
  20 {
  21     invoked_convert(const Arg &arg)
  22         : m_arg(arg)
  23     {
  24     }
  25
  26     Arg m_arg;
  27 };
  28
  29 } // end detail namespace
  30
  31 /// The \ref convert function converts its argument to type \c T (similar to
  32 /// static_cast<T>).
  33 ///
  34 /// \see \ref as "as<T>"
  35 template<class T>
  36 struct convert
  37 {
  38     typedef T result_type;
  39
  40     /// \internal_
  41     template<class Arg>
  42     detail::invoked_convert<T, Arg> operator()(const Arg &arg) const
  43     {
  44         return detail::invoked_convert<T, Arg>(arg);
  45     }
  46 };
  47
  48 } // end compute namespace
  49 } // end boost namespace
  50
  51 #endif // BOOST_COMPUTE_FUNCTIONAL_CONVERT_HPP