libzahl
libzahl is a library for arbitrary size integers, bigint.
Download
Development
You can browse its source code repository or get a copy using git with the following command:
git clone https://git.suckless.org/libzahl
Documentation
Apart from the man pages,
libzahl's repository also contains a
reference sheet and a
reference manual.
Support
If you cannot find what you need in the man pages, the reference sheet, or the reference manual, the best way to get support is to contact the author via e-mail.