1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___TYPE_TRAITS_DECAY_COPY_H
11 #define _LIBCPP___TYPE_TRAITS_DECAY_COPY_H
12 
13 #include <__config>
14 #include <__utility/forward.h>
15 #include <type_traits>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #pragma GCC system_header
19 #endif
20 
21 _LIBCPP_PUSH_MACROS
22 #include <__undef_macros>
23 
24 _LIBCPP_BEGIN_NAMESPACE_STD
25 
26 template <class _Tp>
__decay_copy(_Tp && __t)27 inline _LIBCPP_INLINE_VISIBILITY typename decay<_Tp>::type __decay_copy(_Tp&& __t)
28 #if _LIBCPP_STD_VER > 17
29     noexcept(is_nothrow_convertible_v<_Tp, remove_reference_t<_Tp> >)
30 #endif
31 {
32   return _VSTD::forward<_Tp>(__t);
33 }
34 
35 _LIBCPP_END_NAMESPACE_STD
36 
37 _LIBCPP_POP_MACROS
38 
39 #endif // _LIBCPP___TYPE_TRAITS_DECAY_COPY_H
40