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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___TYPE_TRAITS_IS_REFERENCE_WRAPPER_H
#define _LIBCPP___TYPE_TRAITS_IS_REFERENCE_WRAPPER_H
#include <__config>
#include <__type_traits/integral_constant.h>
#include <__type_traits/remove_cv.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp>
class _LIBCPP_TEMPLATE_VIS reference_wrapper;
template <class _Tp>
struct __is_reference_wrapper_impl : public false_type {};
template <class _Tp>
struct __is_reference_wrapper_impl<reference_wrapper<_Tp> > : public true_type {};
template <class _Tp>
struct __is_reference_wrapper : public __is_reference_wrapper_impl<__remove_cv_t<_Tp> > {};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_ENABLE_IF_H
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