### Description This RFC proposes - adding C implementaions for [@stdlib/number/float32/base/signbit](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/number/float32/base/signbit) which is a single-precision version of [@stdlib/number/float64/base/signbit](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/number/float64/base/signbit) - adding `manifest.json` file and other basic files. - adding `/src` and `/lib` files. ### Related Issues Related issues #649 ### Questions No. ### Other No. ### Checklist - [x] I have read and understood the [Code of Conduct](https://github.com/stdlib-js/stdlib/blob/develop/CODE_OF_CONDUCT.md). - [x] Searched for existing issues and pull requests. - [x] The issue name begins with `RFC:`.
Description
This RFC proposes
manifest.jsonfile and other basic files./srcand/libfiles.Related Issues
Related issues #649
Questions
No.
Other
No.
Checklist
RFC:.