test: migrate math/base/special/deg2radf to ULP-based testing

[Planeshifter]

Resolves a part of #11352.

Description

What is the purpose of this pull request?

This pull request:

• migrates the test suite of math/base/special/deg2radf from relative-tolerance (EPS-based) assertions to exact assertions, per the ULP-based testing migration tracked in [RFC]: Migrate math/base/special packages from relative tolerance testing to ULP difference testing (tracking issue) #11352.
• in test/test.js, direct ULP-difference computation (via @stdlib/number/float32/base/ulp-difference) over all 2003 fixture cases showed a maximum ULP difference of 0 (every fixture expected value is exactly single-precision representable, and deg2radf( x ) returns the expected value bit-for-bit). Accordingly, the exact-equality short-circuit and relative-tolerance branch collapse to a plain t.strictEqual( y, expected[ i ], 'returns expected value' ); assertion, and the now-unused EPS and absf requires and delta/tol variables are removed.
• leaves test/test.native.js unmodified, as it already uses exact strictEqual assertions for the fixture block (no relative-tolerance assertions to migrate). The native add-on was built locally and all assertions pass with exact equality, confirming the JavaScript and C implementations agree bit-for-bit (no JS-vs-native divergence; no enlarged native tolerances needed).

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: Migrate math/base/special packages from relative tolerance testing to ULP difference testing (tracking issue) #11352

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.

The minimum ULP value (0) was verified twice: once during migration and once by an independent adversarial verification pass which recomputed the maximum ULP difference over the test fixtures.

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

This PR was written by Claude Code as part of an automated migration of math/base/special test suites to ULP-based testing (#11352), including minimum-ULP discovery and an independent adversarial verification pass; changes were reviewed by a human before submission.

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/deg2radf	$\\color{green}159/159$ $\\color{green}+100.00\\%$	$\\color{green}5/5$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}159/159$ $\\color{green}+100.00\\%$

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