Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!hc!beta!unm-la!unmvax!nmtsun!hydrovax
From: hydrovax@nmtsun.nmt.edu (M. Warner Losh)
Newsgroups: comp.lang.c
Subject: Re: "logical" xor
Message-ID: <1224@nmtsun.nmt.edu>
Date: 13 Jan 88 00:58:41 GMT
References: <2946@zeus.TEK.COM> <170@illusion.UUCP>
Organization: NMT Hydrology program
Lines: 21
Summary: A closed mind is a terrible thing to waste

In article <170@illusion.UUCP>, marcus@illusion.UUCP (Marcus Hall) writes:
>
> Here I tend to agree with you, but there is a slight gain in not having to
> optimize as much for the rare use of the ^^ operator.
> 

I wasn't even aware that it was in the language (^^), so how can you tell
if it's usage would be "rare" or "common".  You can't.  The ^ operator
is rare because it is almost useless (except for doing bit twiddling
in operating systems) in most applications.

From a personal experience point of view (FORTRAN mostly), I find that I
have used .XOR. (or .NEQV. for you 8x fans) on the VMS FORTRAN compiler
about a half a dozen times in about 50K lines of code.  Then again, I
usually don't think in terms of XORs.

-- 
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