test: migrate simulate/iter/lanczos-pulse to ULP-based assertions

[kgryte]

Resolves a part of #11352.

Description

What is the purpose of this pull request?

This pull request:

• migrates the tests for simulate/iter/lanczos-pulse from relative tolerance (EPS-scaled) comparisons to ULP-based assertions using @stdlib/assert/is-almost-same-value.
• replaces each if ( actual.value === expected[ i ].value ) { ... } else { delta/tol ... } block (9 occurrences in test/test.js) with t.strictEqual( isAlmostSameValue( actual.value, expected[ i ].value, 0 ), true, 'returns expected value' );.
• drops the now unused @stdlib/math/base/special/abs and @stdlib/constants/float64/eps requires, along with the associated delta and tol declarations.

Final ULP constant: 0.

The bound was tightened agentically: starting from 64, the ULP value was lowered until the minimum integer which still passes over the full fixture set was found. All generated waveform values match the expected values exactly, so 0 ULP is the measured minimum (the same bound the sibling package simulate/iter/periodic-sinc settled on in #15819). The suite was run twice at the final value to confirm determinism (3281 assertions passing on both runs, no FMA/arch-dependent variation).

The package has no test/test.native.js; test/test.validate.js contains no tolerance comparisons and is therefore unchanged. Only test/test.js is modified.

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.

Verification performed locally:

• make test TESTS_FILTER=".*/simulate/iter/lanczos-pulse/.*" → 3281 passing, 0 failing.
• ESLint against etc/eslint/.eslintrc.tests.js → 0 errors, 0 warnings.

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 authored by Claude Code running as an unattended scheduled task, following the migration recipe in #11352 and mirroring the idiom established by previously merged conversions in the same package family.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
simulate/iter/lanczos-pulse	$\\color{green}320/320$ $\\color{green}+100.00\\%$	$\\color{green}43/43$ $\\color{green}+100.00\\%$	$\\color{green}5/5$ $\\color{green}+100.00\\%$	$\\color{green}320/320$ $\\color{green}+100.00\\%$

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