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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___CXX03___TYPE_TRAITS_REMOVE_CVREF_H
10#define _LIBCPP___CXX03___TYPE_TRAITS_REMOVE_CVREF_H
11
12#include <__cxx03/__config>
13#include <__cxx03/__type_traits/is_same.h>
14#include <__cxx03/__type_traits/remove_cv.h>
15#include <__cxx03/__type_traits/remove_reference.h>
16
17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18# pragma GCC system_header
19#endif
20
21_LIBCPP_BEGIN_NAMESPACE_STD
22
23#if __has_builtin(__remove_cvref) && !defined(_LIBCPP_COMPILER_GCC)
24template <class _Tp>
25using __remove_cvref_t _LIBCPP_NODEBUG = __remove_cvref(_Tp);
26#else
27template <class _Tp>
28using __remove_cvref_t _LIBCPP_NODEBUG = __remove_cv_t<__libcpp_remove_reference_t<_Tp> >;
29#endif // __has_builtin(__remove_cvref)
30
31template <class _Tp, class _Up>
32struct __is_same_uncvref : _IsSame<__remove_cvref_t<_Tp>, __remove_cvref_t<_Up> > {};
33
34_LIBCPP_END_NAMESPACE_STD
35
36#endif // _LIBCPP___CXX03___TYPE_TRAITS_REMOVE_CVREF_H
37

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source code of libcxx/include/__cxx03/__type_traits/remove_cvref.h