I already told you in an email that this was not an option. You're going to have to learn how to write it yourself using my examples and descriptions which exist in multiple places. Alternatively, you could pay me to do the work. My rate is rather low by today's standards. Another option would be to read the Wikipedia entry and the manual for libpbc and write it up. Knowing very little about the maths, you could likely do it in as little as a long afternoon.