bignum math library

[hh]

On LC Global (Nov 2018, Monthly report) Kevin and Ali announced among
others "Decimal Number Implementation", see my screenshot
http://forums.livecode.com/viewtopic.php?f=76&t=31797

This is probably close to an arbitrary-precision Decimal type,
I know the javascript version:
https://github.com/MikeMcl/decimal.js/

Perhaps it is possible to have "synergetic effects" by joining your work?