Nice! But this is far from complete. Paging through your code, I can see that it is fairly decent, although it is a bit terse regarding comments. Our in-house subset of Perl Best Practices is being observed, perltidy rules followed, overall goals are met by 88.75 percent. Superfluous use of '#' signs nonwithstanding, this can be rated between medium and high. But!

Before any coding is done, there is testing. Before any testing is done, there are specs. But in this case, only sparse references to the specs are interspersed within your code without any links, neither to the original draft nor to the tickets regarding this issue.

Please provide an exhaustive specification with bidirectional links to/from the source code via doxygen/pod/name-your-poison for the follow-up meeting tomorrow at 11am. It will not be televised.

Thank you.

update: I didn't consult sundialsvc4 regarding the markup of this document. "Mea culpa". Sorry^TM!