[Lemmih]

No roadblocks but I did find something I didn't expect. Turns out that 'sinl(pi)' differs on Linux and macosx. I'm getting error-bounds that are slightly different.

Here's the PR for my Haskell implementation: https://github.com/noinia/hgeometry/pull/120

Here's the documentation: https://noinia.github.io/hgeometry/doc/hgeometry-combinatori...