feat: add C implementation math/base/special/dirac-deltaf

[ShabiShett07]

Progresses #649

Description

What is the purpose of this pull request?

This pull request:

• progresses [RFC]: Add C implementations to base special math functions (tracking issue) #649 by adding math/base/special/dirac-deltaf

Related Issues

Does this pull request have any related issues?

This pull request:

• progresses [RFC]: Add C implementations to base special math functions (tracking issue) #649

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.

---

@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/dirac-deltaf	$\color{green}160/160$ $\color{green}+100.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}160/160$ $\color{green}+100.00\%$

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

[Planeshifter]

⚠️ Tracking Issue Closure Warning ⚠️

I noticed your PR description contains closing keywords ("Resolves", "Closes", or "Fixes") referencing a "Tracking Issue".

Why this matters:
Tracking issues should typically remain open until all related sub-issues are completed. GitHub automatically closes issues with such closing keywords when the PR is merged.

Required action:
Use "Progresses:" or "Ref:" instead to reference the tracking issue without automatically closing it.

Thank you for your contribution to the project!

[kgryte]

Thanks for opening this PR, @ShabiShett07. However, it looks like dirac-deltaf was already added in ff48331. As such, I'll go ahead and close this.