feat: add math/base/special/log2f

[Neerajpathak07]

Progresses #649 .

Description

What is the purpose of this pull request?

This pull request:

• adds math/base/special/log2f

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

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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

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@stdlib-js/reviewers

[Neerajpathak07]

/stdlib update-copyright-years

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/log2f	$\color{red}260/262$ $\color{green}+0.00%$	$\color{red}15/16$ $\color{green}+0.00%$	$\color{green}2/2$ $\color{green}+0.00%$	$\color{red}260/262$ $\color{green}+0.00%$

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