feat: add blas/base/zgemv

[Om-A-osc]

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type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:

• task: lint_filenames
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Progresses #2039.

Description

What is the purpose of this pull request?

This pull request:

• Adds the implementation for blas/base/zgemv.
• Adds comprehensive tests covering multiple edge cases, including different transpose modes, stride variations, and boundary conditions.
• Ensures consistency with BLAS level 2 specifications and existing stdlib BLAS modules.

Related Issues

Does this pull request have any related issues?

This pull request progresses:

• [RFC]: Add BLAS bindings and implementations for linear algebra (tracking issue) #2039

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 implementation follows the structure and conventions used in other BLAS level 2 modules within the repository to maintain consistency.

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

Disclosure

N/A.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/base/zgemv	$\color{green}586/586$ $\color{green}+0.24%$	$\color{green}80/80$ $\color{green}+0.86%$	$\color{green}4/4$ $\color{green}+0.00%$	$\color{green}586/586$ $\color{green}+0.24%$

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

[Om-A-osc]

failing run_affected_benchmarks CI check depends on #10235.
@kgryte @Planeshifter Please review this.

[Planeshifter]

What a massive PR!

[Om-A-osc]

@Planeshifter addressed previous comments.

[kgryte]

@MeKaustubh07 You requested a review, but CI is still failing. You'll want to resolve CI failures first. I would think this package should be straightforward to implement given that we already have cgemv, making this package a copy, paste, and modify to double-precision.

[MeKaustubh07]

@MeKaustubh07 You requested a review, but CI is still failing. You'll want to resolve CI failures first. I would think this package should be straightforward to implement given that we already have cgemv, making this package a copy, paste, and modify to double-precision.

@kgryte This PR is still a WIP, apologies for the early review ping.
Yeah The JavaScript-side implementation has been fairly straightforward so far but, I still need to complete and align the corresponding C implementation and resolve the remaining CI issues.
I’ll update the PR and request a review again once those changes are in place.

[MeKaustubh07]

@kgryte We might want to review #11739 first, as it would likely be less time-consuming on your end, and I can mirror any remaining minor changes from there if needed after updating the whole zgemv.

[MeKaustubh07]

@kgryte Done with the refactoring, ready for the review!