Python 2.4+ offers the Decimal module to resolve these problems.  Doesn't help with PoserPython....

So will the C code help, given what was discussed at the python.org link?

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.