docs: fix stale identifier in math/base/special/expm1rel C comment

[Planeshifter]

Follow-up fixes for commits merged to develop between 2026-06-01 13:24:01 -0700 and 2026-06-02 03:02:00 -0700 (SHA range f7a08b6ce..2013317f8, 11 commits).

Description

This pull request:

• math/base/special/expm1rel — In 0a659c4, fix a stale copy-paste in lib/node_modules/@stdlib/math/base/special/expm1rel/src/main.c: the half-angle-identity branch comment referenced HUGE_VALUE (the JS-side name) instead of HUGE_THRESHOLD (the constant defined in the C file).

Related Issues

None.

Questions

No.

Other

Reviewed the 11 commits merged to develop in the trailing 24h window for typos, bugs, and style-guide violations.

Validation performed:

• stdlib JavaScript / TypeScript / README / package.json style guide compliance
• stdlib C style and macro-suffix compliance, plus JS/C cross-language parity in paired implementations
• Diff-only objective-bug scan (off-by-one, wrong operator, inverted condition, wrong return)
• Semantic / logic scan over introduced code (focus: expm1rel half-angle identity, new igamax TS overloads, error-message format strings, See Also cross-link integrity, OVERFLOW_THRESHOLD boundary)

Deliberately excluded (per "high-signal only" filter):

• Single-agent findings that could not be independently re-verified from the diff
• Findings whose fix would require touching code outside the 24h diff window (e.g., relocating a pre-existing link definition into a <related-links> sentinel block in random/rayleigh/README.md)
• Style preferences not anchored to an explicit guideline (e.g., renaming the C constant HUGE_THRESHOLD to match the JS-side HUGE_VALUE — judgment call, paired-file naming parity is not a stated rule)

Checklist

• Read, understood, and followed the contributing guidelines.

AI Assistance

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

This PR was authored by Claude Code as part of an automated 24-hour follow-up audit of commits merged to develop. The reviewer pipeline used four parallel agents (two style, two bug) over the union diff; findings were filtered to those independently corroborated and verifiable from the diff alone before any edits were applied.

---

@stdlib-js/reviewers

---

Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/expm1rel	$\color{green}198/198$ $\color{green}+100.00\%$	$\color{green}10/10$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}198/198$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.