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From: jlg@cochiti.lanl.gov (Jim Giles)
Newsgroups: comp.lang.fortran
Subject: Re: Questions about IF
Message-ID: <26530@beta.gov>
Date: 26 Jun 91 18:03:18 GMT
References: <26384@lanl.gov> <1991Jun25.124806.15349@cs.dal.ca> <26462@beta.gov> <1991Jun26.130917.20736@cs.dal.ca>
Sender: news@beta.gov
Organization: Los Alamos National Laboratory
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In article <1991Jun26.130917.20736@cs.dal.ca>, silvert@cs.dal.ca (Bill Silvert) writes:
|> [...]
|> What's the point?  The original posting asked about the order in which
|> the expressions were evaluated, since that can have side effects.  What
|> difference does it make in what order the AND's are evaluated?

Well, AND is commutative and associative, so it shouldn't make any
difference.  But, Fortran _allows_ short-circuit evaluation of logicals,
so if you're on one of those machines that does that, the order of the
ANDs usually turns out to be the order of the expressions as well.
It could be nice to know you can enforce that.

J. Giles