[ZaoFishbones]

Fun fact, C++ reserves double-underscores anywhere in names for the implementation. It's highly unlikely that you'll run into anything colliding with your names in the wild, but if someone wants to use your library in C++, it's technically bogus.

[Kristine1975]

It's similar in C. C11 Standard chapter 7.1.3:

>All identifiers that begin with an underscore and either an uppercase letter or another underscore are always reserved for any use.

I doubt the library is usable in C++ though, since longjmp doesn't play well with the destruction of local objects.