25 Oct
2010
25 Oct
'10
5:43 p.m.
On Mon, 25 Oct 2010 17:21:20 +0200, Tobias C Rittweiler said:
Does CFFI contain a Lisp type which represents the machine's word size?
I guess it could be defined as
(deftype word-size () `(unsigned-byte ,(* 8 (foreign-type-size :long))))
Using :pointer instead of :long would be better (long is 32-bit on 64-bit Windows).
Are there any caveats? E.g. what about a 32bit Lisp implementation on a 64bit architecture?
That should be OK in general, because almost all 64-bit OSes run 32-bit programs in a 32-bit address space (i.e. as if the OS is 32-bit).
__Martin