`gp-inline`

gp-inline runs Pari/GP code and tests written as comments inline in a document such as TeX or Perl POD, or even program code. This helps guard against mistakes of arithmetic in a document. GP has various mathematical types and number theory functions allowing quite sophisticated mathematics to be checked alongside the statement of a formula etc.

... so two lots of 7 and three lots of 6 for total 32.
% GP-Test  2*7 + 3*6 == 32

The GP-Test line is a comment so ignored by TeX but gp-inline extracts it and runs it with GP. Various other comment prefixes are recognised too. Read more in the online man page (20k, html).

gp-inline is free software (free as in freedom), published under the terms of the GNU General Public License (v3 or up). Download version 6 here and chmod it to executable for use. Requires Perl 5.6 up and IPC::Run.

gp-inline (36k, and sig)

Or for ease of install/remove as a .deb, and its source.

gp-inline_6-0.1_all.deb (29k, and sig)
gp-inline-6.tar.gz (50k, and sig)

The sig files are Gnu PG ascii armoured signatures generated from my key.

The .deb, .tar.gz, and my ELPA archive all include an Emacs gp-inline.el to run tests or defines in a PariEmacs GP sub-process. (See my packaged pariemacs for a .deb of PariEmacs.)