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Path: utzoo!utgpu!water!watmath!watsol!tbray
From: tbray@watsol.UUCP
Newsgroups: comp.emacs
Subject: Tiny integers in Elisp
Message-ID: <154@watsol.waterloo.edu>
Date: Wed, 23-Sep-87 11:45:42 EDT
Article-I.D.: watsol.154
Posted: Wed Sep 23 11:45:42 1987
Date-Received: Sat, 26-Sep-87 05:08:46 EDT
Reply-To: tbray@watsol.UUCP (Tim Bray)
Distribution: world
Organization: U. of Waterloo, Ontario
Lines: 6

I am writing a customized dbx front-end for debugging a large exotic program 
which has things packed into bit fields. dbx prints this stuff, which is 
declared as an int ***, out in hex. I want to extract the bit fields,
so I wrote a little predicate which turns a hex number into an int, then
I was going to use 'logand' to pull out fields.  However, Elisp ints are 
*not* 32-bit quantities - they are 24 bits (right)?  Argh!  On to plan B...