microsoft / microsoft/STL

P0543R3 Saturation Arithmetic

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cxx26
Dominant language
C++
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Description

WG21-P0543R3 Saturation Arithmetic
WG21-P4052R0 Renaming Saturation Arithmetic Functions

Feature-test macros:

#define __cpp_lib_saturation_arithmetic 202603L
#define __cpp_lib_freestanding_numeric  202311L

[!NOTE]
The freestanding macro was added with the value 202311L by cplusplus/draft#6738 and was not increased by cplusplus/draft#8877.

Separately, it was later increased to 202502L by cplusplus/draft#7706 for #5298 WG21-P2976R1 "Freestanding Library: <algorithm>, <numeric>, <random>, And More".

Note: We are not yet accepting PRs for C++26 features.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading WG21-P0543R3 and WG21-P4052R0, then compare their requirements with the existing STL numeric facilities. The issue provides no implementation files or tests, and explicitly says that PRs for C++26 features are not yet accepted, so a concrete definition of done is not available here.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
devtools
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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