Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ukma!nrl-cmf!ames!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: sizeof (integral types)
Message-ID: <10164@smoke.BRL.MIL>
Date: 29 Apr 89 02:39:39 GMT
References: <10044@smoke.BRL.MIL> <7.UUL1.3#5109@pantor.UUCP> <5387@xyzzy.UUCP> <2199@pur-phy> <1514@auspex.auspex.com>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 8

In article <1514@auspex.auspex.com> guy@auspex.auspex.com (Guy Harris) writes:
>(What happens to "-0" on a one's complement or sign-magnitude machine?)

The integer value -0 has to be represented the same as 0, namely all 0 bits.
To write a "minus zero" the simplest thing is to write ~0.  Of course, the
fact that your code is dealing with an explicit minus zero already makes it
dependent on ones-complement architecture.  (I don't know how to do the
equivalent thing on a sign/magnitude architecture; there may be a way.)