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___ALGORITHM_ITER_SWAP_H 10 #define _LIBCPP___ALGORITHM_ITER_SWAP_H 11 12 #include <__config> 13 #include <__utility/declval.h> 14 #include <__utility/swap.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _ForwardIterator1, class _ForwardIterator2> 23 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 void iter_swap(_ForwardIterator1 __a, 24 _ForwardIterator2 __b) 25 // _NOEXCEPT_(_NOEXCEPT_(swap(*__a, *__b))) 26 _NOEXCEPT_(_NOEXCEPT_(swap(*std::declval<_ForwardIterator1>(), *std::declval<_ForwardIterator2>()))) { 27 swap(*__a, *__b); 28 } 29 30 _LIBCPP_END_NAMESPACE_STD 31 32 #endif // _LIBCPP___ALGORITHM_ITER_SWAP_H 33