Where can I find the C ++ generic.h source code?

I am currently using C-like language (NXC) to control my LEGO MINDSTORMS robot. This C-like language doesn't support generics (or, not, C ++, classes, but I'm digressing). However, I read in an outdated C ++ book that either C or C ++ has a generic.h file that contains useful preprocessor macros (i.e. Name2 and declare) to do this.

Is there a way to get a copy of this file?