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34 lines
936 B
C++
Vendored
34 lines
936 B
C++
Vendored
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___UTILITY_AS_CONST_H
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#define _LIBCPP___UTILITY_AS_CONST_H
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#include <__config>
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#include <__utility/forward.h>
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#include <__utility/move.h>
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#include <type_traits>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER > 14
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template <class _Tp>
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_LIBCPP_NODISCARD_EXT constexpr add_const_t<_Tp>& as_const(_Tp& __t) noexcept { return __t; }
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template <class _Tp>
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void as_const(const _Tp&&) = delete;
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___UTILITY_AS_CONST_H
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