Checklist

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• Read and understood the Code of Conduct.
• Searched for existing issues and pull requests.
• The issue name begins with RFC:.

Description

Description of the feature request.

This RFC proposes adding support for computing the reciprocal square root (i.e., 1/sqrt(x)). The implementation is trivial:

/**
* @param {number} x - input value
* @returns {number} reciprocal square root
*/
function rsqrt( x ) {
    return 1.0 / sqrt( x );
}

The rationale behind providing this API is to provide a declarative interface, rather than imperatively writing out the intended behavior. As the implementation is small, modern compilers should readily inline the implementation, thus not affecting performance if used within other implementations.

Package: @stdlib/math/base/special/rsqrt
Alias: rsqrt.

Related Issues

Does this feature request have any related issues?

No.

Questions

Any questions for reviewers?

No.

Other

Any other information relevant to this feature request? This may include screenshots, references, sample output, and/or implementation notes.

No.