Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!bbn!bbn.com!keesan
From: keesan@bbn.com (Morris M. Keesan)
Newsgroups: comp.lang.c
Subject: Re: This one bit me today
Message-ID: <46921@bbn.COM>
Date: 13 Oct 89 21:24:30 GMT
References: <832@crdos1.crd.ge.COM> <9999@cbnews.ATT.COM>
Sender: news@bbn.COM
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In article <9999@cbnews.ATT.COM> smk@cbnews.ATT.COM (Stephen M. Kennedy writes
> p.s. In another article, did someone say it was ok to define an abs macro as
>      -(x)?  What about "y = -abs(x);"?

But -(x) is not the entire body of the macro.  The macro was
#define ABS(x) ((x) < 0 ? -(x) : (x))
and in this context, -(x) is fine and doesn't need to be (-(x)), because the
whole macro has an outer set of parentheses.
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