This commit adds @stdlib/math/base/special/sechf, which computes the hyperbolic secant of a single-precision floating-point number.

ref #649 .

Description

What is the purpose of this pull request?

This pull request:

• This PR adds the C and JS implementation of math/base/special/sechf

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [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.

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. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

{{TODO: add disclosure if applicable}}
Some part of this PR was written primarily by Claude (GitHub Copilot agent mode). The implementation follows the existing patterns in stdlib for single-precision math functions (e.g., cscf, coshf, sech) and was verified through manual testing.

@stdlib-js/reviewers