In order to compile the ratpak library from Microsoft's calculator using Clang, I ported part of it from C++ to C. It's written in C++17 with some C features t

In order to compile the ratpak library from Microsoft's calculator using Clang, I ported part of it from C++ to C. It's written in C++17 with some C features that only Visual C++ accepts. Off the top of my head, some of the changes I needed: * add extern "C" to some of the headers * include stdbool.h for bool * include stdint.h for uint64_t et al. * include stdlib.h and change nullptr to NULL * change constexpr to enum * change static_cast to C-style casts * rewrite a function to take a pointer, rather than a reference * write a min() function I probably could have rewritten it as standard C++, but that somehow seemed like a more daunting prospect at the time.