Re: proper test for 64bitness of platform?

[Matthias Kilian]

> We set _LP64 and __LP64__ variables on 64-bit arch.
>
> $ cpp -dM /dev/null | grep LP64
> #define _LP64 1
> #define __LP64__ 1

It should also be ok to (ab)use LONG_BIT from limits.h, depending
on how the code is 64 bit specific.

Ciao,
        Kili