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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_CONST_H |
10 | #define _LIBCPP___TYPE_TRAITS_REMOVE_CONST_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_const) |
21 | template <class _Tp> |
22 | struct _LIBCPP_NO_SPECIALIZATIONS remove_const { |
23 | using type _LIBCPP_NODEBUG = __remove_const(_Tp); |
24 | }; |
25 | |
26 | template <class _Tp> |
27 | using __remove_const_t _LIBCPP_NODEBUG = __remove_const(_Tp); |
28 | #else |
29 | template <class _Tp> |
30 | struct remove_const { |
31 | typedef _Tp type; |
32 | }; |
33 | template <class _Tp> |
34 | struct remove_const<const _Tp> { |
35 | typedef _Tp type; |
36 | }; |
37 | |
38 | template <class _Tp> |
39 | using __remove_const_t = typename remove_const<_Tp>::type; |
40 | #endif // __has_builtin(__remove_const) |
41 | |
42 | #if _LIBCPP_STD_VER >= 14 |
43 | template <class _Tp> |
44 | using remove_const_t = __remove_const_t<_Tp>; |
45 | #endif |
46 | |
47 | _LIBCPP_END_NAMESPACE_STD |
48 | |
49 | #endif // _LIBCPP___TYPE_TRAITS_REMOVE_CONST_H |
50 |
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