ceph/src/boost/boost/type_traits/is_volatile.hpp

   1
   2 //  (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes,
   3 //      Howard Hinnant and John Maddock 2000.
   4 //  (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001
   5
   6 //  Use, modification and distribution are subject to the Boost Software License,
   7 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   8 //  http://www.boost.org/LICENSE_1_0.txt).
   9 //
  10 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
  11
  12 //    Fixed is_pointer, is_reference, is_const, is_volatile, is_same,
  13 //    is_member_pointer based on the Simulated Partial Specialization work
  14 //    of Mat Marcus and Jesse Jones. See  http://opensource.adobe.com or
  15 //    http://groups.yahoo.com/group/boost/message/5441
  16 //    Some workarounds in here use ideas suggested from "Generic<Programming>:
  17 //    Mappings between Types and Values"
  18 //    by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html).
  19
  20
  21 #ifndef BOOST_TT_IS_VOLATILE_HPP_INCLUDED
  22 #define BOOST_TT_IS_VOLATILE_HPP_INCLUDED
  23
  24 #include <cstddef> // size_t
  25 #include <boost/type_traits/integral_constant.hpp>
  26
  27 namespace boost {
  28
  29 #if defined( __CODEGEARC__ )
  30
  31    template <class T>
  32    struct is_volatile : public integral_constant<bool, __is_volatile(T)> {};
  33
  34 #else
  35
  36    template <class T>
  37    struct is_volatile : public false_type {};
  38    template <class T> struct is_volatile<T volatile> : public true_type{};
  39    template <class T, std::size_t N> struct is_volatile<T volatile[N]> : public true_type{};
  40    template <class T> struct is_volatile<T volatile[]> : public true_type{};
  41
  42 #endif
  43
  44 } // namespace boost
  45
  46 #endif // BOOST_TT_IS_VOLATILE_HPP_INCLUDED