Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!taumet!steve
From: steve@taumet.com (Stephen Clamage)
Newsgroups: comp.lang.c
Subject: Re: % operator with negatives
Message-ID: <540@taumet.com>
Date: 15 Dec 90 20:15:26 GMT
References: <1990Dec12.185714.7169@mp.cs.niu.edu> <1990Dec12.205416.26622@zoo.toronto.edu> <7461:Dec1310:04:0990@kramden.acf.nyu.edu> <1529@bbxsda.UUCP>
Organization: Taumetric Corporation, San Diego
Lines: 16

scott@bbxsda.UUCP (Scott Amspoker) writes:

>Well I can really stir up the muck by pointing out that, by definition,

>    a mod 0 == a

>Therefore, the method of dividing (a/b) does not always work since b could 
>legally equal 0.

As has been pointed out before the "%" operator in C is NOT a mod 
operator, but a remainder operator.  As such it is defined in terms
of division; thus a%0 is undefined.  (The ANSI standard explicitly
says that a%0 is undefined.)
-- 

Steve Clamage, TauMetric Corp, steve@taumet.com