P3050 R3 Fix C++26 by optimizing linalg::conjugated for noncomplex value types

[wg21bot]

P3050R0 Optimize linalg::conjugated for noncomplex value types (Mark Hoemmen, )

[wg21bot]

P3050R1 Fix C++26 by optimizing linalg::conjugated for noncomplex value types (Mark Hoemmen)

[wg21bot]

P3050R2 Fix C++26 by optimizing linalg::conjugated for noncomplex value types (Mark Hoemmen)

[ben-craig]

2024-08-27 Library Evolution Telecon

P3050R2: Fix C++26 by optimizing linalg::conjugated for noncomplex value types

2024-08-27 Library Evolution Telecon Minutes

Champion: Mark Hoemmen
Chair: Ben Craig
Minute Taker: Guy Davidson

Summary

• Why this facility should go into the standard library? Fixing existing std facilities
• Examples? Yes
• Field experience?
  • Implementation experience? Yes
  • Usage experience? No
  • Deployment experience? No
• Performance considerations? Yes
• constexpr? No change
• Discussion of prior art? BLAS
• Changes Library Evolution previously requested? N/A
• Support for "std::format", "hash", and allocators (if required)? No
• Wording? Yes, though context diffs would be nice
• Feature test macro? Yes, though there is a clash with P3222R0
• Freestanding? Already freestanding

Discussed the high level design, but then ended up spending a lot of time discussing the interaction with conj-if-needed.
There was general support for the fix as suggested. We reviewed the design. The final design and the wording still need to be reviewed.

Next Steps

The paper will be seen again in the next telecon.

[ben-craig]

2024-09-03 Library Evolution Telecon

P3050R2: Fix C++26 by optimizing linalg::conjugated for noncomplex value types

2024-09-03 Library Evolution Telecon Minutes

Champion: Mark Hoemmen
Chair: Ben Craig
Minute Taker: Eddie Nolan

Summary

POLL: Request new feature test macro, rather than bumping __cpp_lib_linalg

SF	WF	N	WA	SA
0	2	7	3	1

Attendance: 19
# of Authors: 1
Author Position: N
Outcome: No consensus for change

POLL: Send P3050R2 (Fix C++26 by optimizing linalg::conjugated for noncomplex value types) to LWG for C++26 classified as B0 ("now or never"), to be confirmed with a Library Evolution electronic poll.

SF	WF	N	WA	SA
9	4	0	0	0

Attendance: 19
# of Authors: 1
Author Position: SF
Outcome: Unanimous consent

Author has indicated that he will likely look at improving the conj-if-needed design in the near future.

Next Steps

P3050R2 was forwarded to LWG for C++26 (to be confirmed by an electronic poll)