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From: dik@mcvax.UUCP
Newsgroups: comp.lang.c
Subject: Re: C and Floating Point
Message-ID: <346@zuring.mcvax.cwi.nl>
Date: Sat, 11-Apr-87 20:21:20 EST
Article-I.D.: zuring.346
Posted: Sat Apr 11 20:21:20 1987
Date-Received: Tue, 14-Apr-87 00:01:43 EST
References: <15958@sun.uucp> <5716@brl-smoke.ARPA>
Reply-To: dik@zuring.UUCP (Dik T. Winter)
Organization: CWI, Amsterdam
Lines: 19
Keywords: C Fortran Floating Point Parenthases

In article <26916@rochester.ARPA> crowl@rochester.UUCP (Lawrence Crowl) writes:
 > In article <852@bobkat.UUCP> m5d@bobkat.UUCP (Mike McNally (Man Insane)) writes:
 > >Seriously, I cannot think of a SINGLE case in all my life when I suffered
 > >from expression rearrangement.  The same goes for all the programmers 
 > >in my office (4 others).  Do we just write different kinds of programs?
Do you use floating point?
 > >Note that I'm not doubting these parentheses horror stories; I just
 > >think it's fascinating that I've never had one.  Oh well.
 > 
 > Well, I cannot say I have been bit, ...
Well, I have been bit.  Strange though, it was in Fortran.  (A - B) - B
compiled as A - (B + B).  However, I was lucky because A - B - B compiled
as (A - B) - B.
(Optimization?  No damn optimization, we just rearrange your code
and see what happens!)
-- 
dik t. winter, cwi, amsterdam, nederland
INTERNET   : dik@cwi.nl
BITNET/EARN: dik@mcvax