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Adding note about potential issue with ranges::iter_swap customizations. #1867

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Adding note about potential issue with ranges::iter_swap customizations. #1867

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4181be8
Adding note about potential issue with ranges::iter_swap customizations.
timmiesmith Sep 20, 2024
96c7783
Applying suggested change.
timmiesmith Sep 20, 2024
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6 changes: 6 additions & 0 deletions documentation/library_guide/parallel_api/parallel_range_algorithms.rst
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Expand Up @@ -106,6 +106,12 @@ Usage Example for Parallel Range Algorithms
oneapi::dpl::ranges::copy(oneapi::dpl::execution::dpcpp_default, view_in, std::span(vec_out));
}

Implementation Notes
--------------------
The ``sort`` and ``stable_sort`` algorithms provided use ``std::swap`` internally instead of
``std::ranges::iter_swap`` for swapping elements, as the C++ standard suggests but does not explicitly require.
As a result, customizations targeting ``std::ranges::iter_swap`` will not be respected.

.. rubric:: See also:

:doc:`range_based_api`
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