[0PrashantYadav0]

Description

What is the purpose of this pull request?

This pull request:

• fixes math/base/special/pow for x = -0 (the x = 0 check missed the sign bit), so, e.g., pow( -0.0, -1/6 ) returned ~9.65e53 instead of Infinity. This also fixes pow( -Infinity, y ), which is computed as pow( -0.0, -y ).
• restricts the y = ±0.5 shortcuts in pow and powf to x > 0, as sqrt( -0.0 ) is -0 and sqrt( -Infinity ) is NaN. E.g., pow( -0.0, -0.5 ) returned -Infinity and pow( -Infinity, 0.5 ) returned NaN, instead of Infinity.
• adds tests for -0 and -Infinity raised to non-integer powers.

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• Ref Add tests for IEEE 754-2019 compliance #365

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of 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

If you answered "yes" to using AI assistance, please provide a short disclosure indicating how you used AI assistance. This helps reviewers determine how much scrutiny to apply when reviewing your contribution. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

I used Claude Code to review this PR.

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Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/pow	$\\color{red}1376/1382$ $\\color{green}+99.57\\%$	$\\color{red}120/122$ $\\color{green}+98.36\\%$	$\\color{green}11/11$ $\\color{green}+100.00\\%$	$\\color{red}1376/1382$ $\\color{green}+99.57\\%$
math/base/special/powf	$\\color{red}1219/1253$ $\\color{green}+97.29\\%$	$\\color{red}102/105$ $\\color{green}+97.14\\%$	$\\color{red}8/10$ $\\color{green}+80.00\\%$	$\\color{red}1219/1253$ $\\color{green}+97.29\\%$

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