feat: add C ndarray API and refactor blas/ext/base/dsnansumors

[headlessNode]

Description

What is the purpose of this pull request?

This pull request:

• Add C ndarray API and refactor/cleanup blas/ext/base/dsnansumors

Related Issues

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No.

Questions

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No.

Other

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Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/dsnansumors	$\color{green}366/366$ $\color{green}+100.00\%$	$\color{green}21/21$ $\color{green}+100.00\%$	$\color{green}4/4$ $\color{green}+100.00\%$	$\color{green}366/366$ $\color{green}+100.00\%$

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

[Planeshifter]

LGTM!

[stdlib-bot]

PR Commit Message

feat: add C `ndarray` API and refactor `blas/ext/base/dsnansumors`

PR-URL: https://github.com/stdlib-js/stdlib/pull/3246

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Please review the above commit message and make any necessary adjustments.