As I already stated the reason is "bindings to large C/C++ libraries with numerous dependencies" for other libraries and "it is not intended to compete with large commercial solvers".
I didn't do comparison, but it will be helpfull to compare and tell us.
It will be helpful, if you add comments discussing why certain functions are implemented in that way, and what algorithms (references) is used.
For example, there are some magic numbers without explanation:
if (cap < 1000) {
Have you looked at: https://github.com/davideberly/GeometricTools
Each algorithm is well documented and explained. There is even a short pdf papers for some of the algorithms explainimg why some decisions are taken and what numerical issues may be expected.
GPT:
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