[PATCH] Define std::atomic_ref and std::atomic<floating-point> for C++20

[Jonathan Wakely]

On 12/07/19 12:20 +0100, Jonathan Wakely wrote:
>On 11/07/19 20:45 +0100, Jonathan Wakely wrote:
>>This adds the new atomic types from C++2a, as proposed by P0019 and
>>P0020. To reduce duplication the calls to the compiler's atomic
>>built-ins are wrapped in new functions in the __atomic_impl namespace.
>>These functions are currently only used by std::atomic<floating-point>
>>and std::atomic_ref but could also be used for all other specializations
>>of std::atomic.
>
>Here's a patch to reuse the new __atomic_impl functions in the
>existing atomic<integral> and atomic<pointer> specializations (and
>apply some general tidying up).
>
>I don't plan to commit this yet, but I might do so at some point.

And here's a patch for https://wg21.link/lwg3220 which I won't apply
until that open issue is resolved.


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