Correct way to map C #define to version

[bearophile]

Sumit Raja:

> Am I using version correctly? How is this done usually?

I think "version" is usually meant to be given as compiler 
switch. Maybe a simple enum + static if is enough in your case.

And keep in mind that C int and D int are different on 64 bit 
systems, the D int is always 32 bit. In Phobos there are ints of 
the size of C.

Bye,
bearophile