Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: When it is amoral... (Re: When is a cast not a cast?)
Message-ID: <10203@smoke.BRL.MIL>
Date: 4 May 89 04:16:04 GMT
References: <2747@buengc.BU.EDU> <2763@buengc.BU.EDU>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 17

In article <2763@buengc.BU.EDU> bph@buengc.bu.edu (Blair P. Houghton) writes:
-	Now I know much, much better.  A pointer isn't really a
-	data type at all.  It's a different sort of beastie,
-	germane only within a program, and therefore it is
-	fallacious to see it as having the properties of a
-	countable, measurable, or otherwise physical entity.
-The way pointers work implies that they don't refer at all to
-anything physical, even to memory locations.

I don't think you have it figured out yet.

-It doesn't change the fact that I'd like to be able to add and subtract
-pointers regardless of what trouble I _might_ get into.

Fine; cast them into the appropriate integral type and do whatever
integral arithmetic your heart desires.  Don't expect anyone else to
appreciate the beauty of your code when you've done this..