>It's still in beta, but if you're interested in testing it please download the May 25, 2020 Bignums Macro Download at this link: http://www.libsf.org/misc/sem32/index.html
>
>And here is the VFP code to make it work. You only need the bignums.dll file. You can discard all the rest. But if you're interested, all the source code is there too at the link above. Download May.25.2020 Bignums source code.

A bug has been discovered:
bignums.cpp, the function iSheet_init() (around line 918), it allocates the pointer gsSheet, but for allocation it uses sizeof(gsSheet) rather than sizeof(*gsSheet) or sizeof(SSheet). It will cause a memory error in some cases, and undefined behavior in some cases.

I'll post an updated source code and binary release this weekend.

This bug was discovered by me using CppCheck (http://cppcheck.sourceforge.net).