microsoft / microsoft/STL

P3104R6 Bit Permutations

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cxx29
Dominant language
C++
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Description

WG21-P3104R6 Bit Permutations

INCREASED feature-test macro, NOTE special interaction with #6340 WG21-P3793R2 Better Shifting which increased this "first":

The value for the feature-test macro should have a number one greater than the value for P3793, if both papers are applied to the draft during the same meeting.

#define __cpp_lib_bitops 202607L

Note: We are not yet accepting PRs for C++29 features.

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Research direction

Start by reading WG21-P3104R6 and the referenced interaction with issue #6340, WG21-P3793R2. The stated completion point includes the feature-test macro value changing to 202607L when both papers land together. The issue says PRs for C++29 features are not yet being accepted, so no implementation entry point or test is identified.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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