[AryanSharma48]

Part of #14034.

Description

What is the purpose of this pull request?

This pull request:

• adds the native C implementation for @stdlib/stats/base/ndarray/sstdevwd.
• adds the Node-API boilerplate and tryRequire dispatcher to safely fall back to the pure JS implementation.
• includes the required C benchmarks, native JS benchmarks, and C examples mirroring the canonical structure.

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC] : add C implementations for @stdlib/stats/base/ndarray packages (tracking issue) #14034

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.

I utilized AI assistance to help implement the documentation, carefully adhering to the provided reference implementations and canonical @stdlib structures.

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/ndarray/sstdevwd	$\\color{green}199/199$ $\\color{green}+0.00\\%$	$\\color{green}7/7$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}199/199$ $\\color{green}+0.00\\%$

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

[AryanSharma48]

Hey @kgryte Just a heads up: all local lints passed successfully. The CI failure here is due to a GitHub server API rate limit when trying to download the editorconfig-checker binary.

[0PrashantYadav0]

benchmark/benchmark.js should now require ./../lib/main.js (as in svariancech, #15008), since ./../lib can resolve to the native addon.

[AryanSharma48]

Thanks for the review. I've updated the PR with all the valid changes requested.

Similar to the comments on #14885, the suggestions for src/addon.c and examples/c/example.c are again redundant/invalid here: the (double) cast was already present in d7fedb45b29, and the blank line in example.c was already there at line 76.

Please take a look at the latest commit.