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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-exception6//7//===---------------------------------------------------------------------===//8 9#ifndef _LIBCPP___FWD_FUNCTIONAL_H10#define _LIBCPP___FWD_FUNCTIONAL_H11 12#include <__config>13 14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)15# pragma GCC system_header16#endif17 18_LIBCPP_BEGIN_NAMESPACE_STD19 20#if _LIBCPP_STD_VER >= 1421template <class _Tp = void>22#else23template <class _Tp>24#endif25struct less;26 27template <class>28struct hash;29 30template <class>31class reference_wrapper;32 33_LIBCPP_END_NAMESPACE_STD34 35#endif // _LIBCPP___FWD_FUNCTIONAL_H36