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 remove_const {
23   using type _LIBCPP_NODEBUG = __remove_const(_Tp);
24 };
25 
26 template <class _Tp>
27 using __remove_const_t = __remove_const(_Tp);
28 #else
29 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const            {typedef _Tp type;};
30 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const<const _Tp> {typedef _Tp type;};
31 
32 template <class _Tp>
33 using __remove_const_t = typename remove_const<_Tp>::type;
34 #endif // __has_builtin(__remove_const)
35 
36 #if _LIBCPP_STD_VER > 11
37 template <class _Tp> using remove_const_t = __remove_const_t<_Tp>;
38 #endif
39 
40 _LIBCPP_END_NAMESPACE_STD
41 
42 #endif // _LIBCPP___TYPE_TRAITS_REMOVE_CONST_H
43