GNU-compatible, BSD-licensed bc

[Gavin Howard]

On Mon, Jan 7, 2019 at 5:38 PM Conrad Meyer <cem at freebsd.org> wrote:
>
> On Mon, Jan 7, 2019 at 4:00 PM Devin Teske <dteske at freebsd.org> wrote:
> > How do you handle arbitrary arithmetic precision?
>
> Looks like https://github.com/gavinhoward/bc/blob/master/src/num.c .

That is correct. Because this bc is meant to help bootstrap the Linux
kernel and have no dependencies other than POSIX 2008, I wrote my own.
Also, the POSIX bc standard mandates doing math in decimal. OpenSSL
would not be smart if they did that. There are also a few
peculiarities with the POSIX bc standard that (more or less) require a
standalone implementation.

Also, right now I am working on getting a release candidate out that
will enable me to make a quick port that Stefan could use as a jumping
off point. My build system changed between 1.0 and now, and I would
like to be able to test it.

Gavin Howard