iter_swap.h 1.2 KB

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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-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. #ifndef _LIBCPP___ALGORITHM_ITER_SWAP_H
  9. #define _LIBCPP___ALGORITHM_ITER_SWAP_H
  10. #include <__config>
  11. #include <__utility/declval.h>
  12. #include <__utility/swap.h>
  13. #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  14. # pragma GCC system_header
  15. #endif
  16. _LIBCPP_BEGIN_NAMESPACE_STD
  17. template <class _ForwardIterator1, class _ForwardIterator2>
  18. inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 void iter_swap(_ForwardIterator1 __a,
  19. _ForwardIterator2 __b)
  20. // _NOEXCEPT_(_NOEXCEPT_(swap(*__a, *__b)))
  21. _NOEXCEPT_(_NOEXCEPT_(swap(*std::declval<_ForwardIterator1>(), *std::declval<_ForwardIterator2>()))) {
  22. swap(*__a, *__b);
  23. }
  24. _LIBCPP_END_NAMESPACE_STD
  25. #endif // _LIBCPP___ALGORITHM_ITER_SWAP_H