feat: add math/base/special/tanf

[0PrashantYadav0]

Resolves None.

Description

What is the purpose of this pull request?

This pull request:

• add benchmarks, examples, tests and docs for maths/base/special/tanf
• add C implementation for tanf

Related Issues

Does this pull request have any related issues?

This pull request:

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

Questions

Any questions for reviewers of this pull request?

No.

Other

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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/tanf	$\color{green}165/165$ $\color{green}+100.00\%$	$\color{green}5/5$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}165/165$ $\color{green}+100.00\%$

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

[0PrashantYadav0]

@kgryte @gunjjoshi I need help on how to add main implementation for tanf. Do you have to add base functionality like tan or we can use tanf as wrapper function on tan. ( Like i implemented for now, will changes according to your feedback ).

[0PrashantYadav0]

/stdlib update-copyright-years

[kgryte]

@0PrashantYadav0 You need to implement the single-precision variant based on a reference implementation. What you did in this PR is not what we are looking for.

As can be seen by reading the source of tan, we use msun as the reference implementation.

stdlib/lib/node_modules/@stdlib/math/base/special/tan/src/main.c

Line 21 in 017e2cf

* The following copyright, license, and long comment were part of the original implementation available as part of [FreeBSD]{@link https://svnweb.freebsd.org/base/release/12.2.0/lib/msun/src/s_tan.c}. The implementation follows the original, but has been modified for JavaScript.

Accordingly, I suggest you follow that link and find the corresponding single-precision implementation, as it is that implementation which should serve as the basis on this package.

[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]

Looks like tanf has already been added in #7302. As such, I'll go ahead and close.