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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___ALGORITHM_ITER_SWAP_H 
#define _LIBCPP___ALGORITHM_ITER_SWAP_H 
 
#include <__config> 
#include <__utility/declval.h> 
#include <__utility/swap.h> 
 
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 
#pragma GCC system_header 
#endif 
 
_LIBCPP_BEGIN_NAMESPACE_STD 
 
template <class _ForwardIterator1, class _ForwardIterator2> 
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 void iter_swap(_ForwardIterator1 __a, 
                                                                              _ForwardIterator2 __b) 
    //                                  _NOEXCEPT_(_NOEXCEPT_(swap(*__a, *__b))) 
    _NOEXCEPT_(_NOEXCEPT_(swap(*declval<_ForwardIterator1>(), *declval<_ForwardIterator2>()))) { 
  swap(*__a, *__b); 
} 
 
_LIBCPP_END_NAMESPACE_STD 
 
#endif // _LIBCPP___ALGORITHM_ITER_SWAP_H