Agreed with this. Also outside of very specific applications like graphics libraries, robotics, game engines you would never want to write something like this f

Agreed with this. Also outside of very specific applications like graphics libraries, robotics, game engines you would never want to write something like this from scratch and instead rely on an existing library or game engine. So unless you’re working in that area it’s not imposter syndrome to find it foreign, it’s probably good! I’ve never worked directly on floating point libraries like this, but having dealt with similar stuff, I suspect if this were in production it would end up peppered with IFDEF to support various implementation differences across hardware types, even if it is compliant with eg IEEE standards.