urbit-cob

A C implementation of urbit-ob, with much glancing at urbit-pob.

Build & install

There is the simplest-possible Makefile and a Nix flake.

Use

The library is based on GNU MP, making it bignum-correct (as long as your host is 64-bit, otherwise most probably not, sorry, testing & PRs welcome!) but rather awkward to use.

The library exposes two families of functions:

• num2patp / patp2num / patp2hex / is_valid_patp
• num2patq / patq2num / patq2hex / is_valid_patq

As well as:

• clan, for determining the ship class of a (numeric) point
• sein, for determining the parent of a (numeric) point
• patq_eq, for comparing @q values for equality