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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!bentley!kwh
From: kwh@bentley.UUCP (KW Heuer)
Newsgroups: net.lang.c
Subject: Re: unary +
Message-ID: <630@bentley.UUCP>
Date: Wed, 12-Mar-86 10:18:28 EST
Article-I.D.: bentley.630
Posted: Wed Mar 12 10:18:28 1986
Date-Received: Fri, 14-Mar-86 06:18:39 EST
References: <1227@mtx5a.UUCP> <1223@mit-eddie.MIT.EDU>, <1147@lsuc.UUCP>
Organization: AT&T Bell Laboratories, Liberty Corner
Lines: 13

In article <1147@lsuc.UUCP> lsuc!msb (Mark Brader) writes:
...
>	#define  ROUND(real)		((long) .5 + (real))
...
>There are, of course, NO unnecessary parentheses in the example.

True, they are necessary, but they are not sufficient.  If you want
ROUND to do what its name implies (for nonnegative arguments), you
should have written it
	#define	ROUND(real)		((long)(.5 + (real)))
since unary operators (including cast) have precedence over addition.
Just thought I should point that out, since you were otherwise being
quite careful with parens.