[RFC]: add C implementations for `blas/ext/base/ndarray` packages

[ujjwalv01]

Purpose

This issue tracks the initiative to add native C implementations for typed ndarray APIs in blas/ext/base/ndarray. It serves as a central reference point for contributors so that work can be coordinated, PRs can be linked back here, and duplicate effort can be avoided.

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Summary

In blas/ext/base/ndarray, if a typed ndarray API is missing a native C implementation, it is fair game to add one. This issue serves as a general tracking reference for this ongoing initiative.

Candidates for C implementations typically include packages handling the following data types (indicated by their prefixes):

• d (double-precision)
• s (single-precision)
• c (complex single-precision)
• z (complex double-precision)

Since new strided APIs are constantly being added to blas/ext/base, this is intentionally kept as a generalized issue rather than an enumerated checklist, which would become outdated quickly.

What to Do

If you find a package under blas/ext/base/ndarray that has a JavaScript implementation but is missing a native C addon (src/, include/, manifest.json, binding.gyp, etc.), you may go ahead and add the C implementation.

Reference Library

To help contributors understand exactly what is required when adding a native C implementation, we have compiled a "Reference Library" of merged PRs. Please refer to the PR that best matches the type of package you are working on:

• d* (double-precision): PR #10065
• dnan* (double-precision with NaNs): PR #10715
• s* (single-precision): PR #10078
• snan* (single-precision with NaNs): PR #10777
• c* (complex single-precision): PR #10696
• z* (complex double-precision): PR #10699

PR Title Convention

When opening a pull request for this work, please use the following title format so others can easily search GitHub and avoid duplicate PRs:

feat: add C implementation for blas/ext/base/ndarray/<package-name>

You are Advised

• Before starting, please leave a comment on this issue mentioning which package you are working on (e.g., "I am working on dsum"). This helps avoid two contributors working on the same package simultaneously.
• Reference this issue in your PR description if you are adding a C implementation for any blas/ext/base/ndarray package. This helps reviewers understand the context and track progress against this initiative.
• Check the PR tracker before starting to make sure there is no existing open PR for the same package.

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Related Issues

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Questions

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Other

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Checklist

• I have read and understood the Code of Conduct.
• Searched for existing issues and pull requests.
• The issue name begins with RFC:.

[Nehant14]

I'd like to work on 'blas/ext/base/ndarray/dsumpw'. Will open a PR referencing this issue once ready.

[Nehant14]

I'd like to work on 'blas/ext/base/ndarray/dcusum'. Will open a PR referencing this issue once ready.