P2933 R4 std::simd overloads for <bit> header

[wg21bot]

P2933R0 std::simd overloads for header (Daniel Towner, Ruslan Arutyunyan)

[ogiroux]

SG1 poll in Kona:

There are no concurrency and parallelism concerns with P2956R0, P2933R0; they should be seen by LEWG
- No objection to unanimous consent

[inbal2l]

Library Evolution Meeting Kona 2023-11-08

P2933R0: Proposal to allow simd overloads for standard C++ <bit> header

2023-11-08 Library Evolution Kona 2023 Meeting Minutes

Chair: Robert / Billy

Champion: Daniel Towner

Minute Taker: Mark Z

Polls

POLL: Forward P2933R0 to LWG for C++26 (to be confirmed by an electronic poll).

SF	F	N	A	SA
8	13	2	0	0

Attendance: 21 (in person) + 11 (remote)
# of Authors: 2
Authors’ position: 2x SF
Outcome: Strong consensus in favor.

No issues were raised by SG1. The paper was discussed in detail, including the topic of consistency with the existing header.

Outcome

"nodiscard" is out of scope for the standard. As of LWG there's no preference on whether to add it (no requirement for consistency), slight preference to keeping it out as it may indicate on implementations wrongly.

The paper was forwarded to LWG for C++26 (to be confirmed with an electronic poll)

[inbal2l]

P2933R1 Extend <bit> header function with overloads for std::simd (Daniel Towner, Ruslan Arutyunyan)
(Contains minor typo fixes, to be published on December 2023 mailing list)

[inbal2l]

P2933R1 was added to LEWG 2023 December electronic poll paper (P3053R0)

[inbal2l]

P2933R1 was forwarded to LWG on LEWG 2023 December electronic poll (P3054R0)

[JeffGarland]

This paper is blocked until the core paper review is complete #670

[bstamour]

Discussed in LWG telecom on 2025 Jan 10.

[bstamour]

Minutes from 2025 Jan 10: https://wiki.edg.com/bin/view/Wg21telecons2025/P2933-20250110

[wg21bot]

P2933R3 Extend <bit> header function with overloads for std::simd (Daniel Towner, Ruslan Arutyunyan)

[bstamour]

LWG saw this Monday morning in Hagenberg.

[danieltowner]

Updated after LWG review. Draft at: https://isocpp.org/files/papers/D2933R4.html

LEWG also confirmed design change.

[bstamour]

LWG saw the update Wednesday afternoon in Hagenberg.

[bstamour]

LWG polled this Thursday afternoon in Hagenberg:

Put P2933R4 in C++26
| F | A | N |
| 7 | 0 | 2 |

[inbal2l]

(Out of order, plenary-approved)

2025-02-10 Library Evolution Hagenberg Meeting

P2933R3: Extend <bit> header function with overloads for std::simd

2025-02-10 Library Evolution Hagenberg Minutes

Champion: Matthias Kretz
Chair: Fabio Fracassi / Inbal Levi
Minute Taker: Eddie

Summary

POLL: Confirm LWG changes in P2933R3 and send it back to LWG for C++26

SF	F	N	A	SA
4	15	1	0	0

Attendance: 28 (IP) + 3 (R)
Author's Position: SF, F
Outcome: Strong consensus in favour

Next Steps

Changes in P2933R3 requested by LWG confirmed, sent back to LWG for C++26.

[wg21bot]

P2933R4 std::simd overloads for <bit> header (Daniel Towner, Ruslan Arutyunyan)