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Re: [PATCH 1/3] C++20 constexpr lib part 1/3


On 01/08/19 11:47 -0400, Ed Smith-Rowland via libstdc++ wrote:
On 8/1/19 6:56 AM, Jonathan Wakely wrote:
On 31/07/19 10:50 -0400, Ed Smith-Rowland via libstdc++ wrote:
Here is the patch for

* Implement C++20 p0202 - Add constexpr Modifiers to Functions in <algorithm> and <utility> Headers.

* Implement C++20 p1023 - constexpr comparison operators for std::array.

Relative to the last effort it is rebased on more recent trunk and I added to <version>.

There's some chance that I'll have to tweak the macros after the draft comes in but I'd like to get this moving.?? I've got other chunks of constexpr lib coming.?? This passes C++20 testing onx86_64-linux.

Ok?

Calls to the new __memmove and __memcmp functions need to be qualified
with std:: to prevent ADL. I think we should rename those functions,
but that can happen later.

IMHO, these concepts are too important to leave as an implementation detail.

I suspect the committee will come crawling back to specify these with real names.

memory_copy, memory_compare, memory_move for C++23 anyone?

trivial_copy, trivial_compare, trivial_move?


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