1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___TYPE_TRAITS_REMOVE_VOLATILE_H
10#define _LIBCPP___TYPE_TRAITS_REMOVE_VOLATILE_H
11
12#include <__config>
13
14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15#  pragma GCC system_header
16#endif
17
18_LIBCPP_BEGIN_NAMESPACE_STD
19
20#if __has_builtin(__remove_volatile)
21template <class _Tp>
22struct remove_volatile {
23  using type _LIBCPP_NODEBUG = __remove_volatile(_Tp);
24};
25
26template <class _Tp>
27using __remove_volatile_t = __remove_volatile(_Tp);
28#else
29template <class _Tp>
30struct _LIBCPP_TEMPLATE_VIS remove_volatile {
31  typedef _Tp type;
32};
33template <class _Tp>
34struct _LIBCPP_TEMPLATE_VIS remove_volatile<volatile _Tp> {
35  typedef _Tp type;
36};
37
38template <class _Tp>
39using __remove_volatile_t = typename remove_volatile<_Tp>::type;
40#endif // __has_builtin(__remove_volatile)
41
42#if _LIBCPP_STD_VER >= 14
43template <class _Tp>
44using remove_volatile_t = __remove_volatile_t<_Tp>;
45#endif
46
47_LIBCPP_END_NAMESPACE_STD
48
49#endif // _LIBCPP___TYPE_TRAITS_REMOVE_VOLATILE_H
50