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From: wmb@MITCH.ENG.SUN.COM
Newsgroups: comp.lang.forth
Subject: Conditionals
Message-ID: <9102270321.AA13488@ucbvax.Berkeley.EDU>
Date: 26 Feb 91 22:46:09 GMT
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Reply-To: wmb%MITCH.ENG.SUN.COM@SCFVM.GSFC.NASA.GOV
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> > A long time ago, I proposed including all the conditionals (< > = <= >= U<
> > U> U<= U>= 0< 0> 0= 0<= 0>=) in ANS Forth, but it didn't pass.

> Anyway, what did you mean with (< (not a rethorical question)?

I was just listing the complete set of conditionals, without regard to
which ones are already in the standard.  In fact, I don't even know which
ones are in the standard and which ones aren't.  I long ago decided to
to include all of the conditionals in my Forth systems , and since then
I haven't bothered to memorize which ones are "standard".

By the way, on a 1's complement or signed magnitude machine, it might be
necessary to have U= and perhaps U0= , because such machines have 2 different
representations for 0.  U= would test for "bitwise identical", and = would
test for arithmetically equal, considering +0 equal to -0 .

Mitch Bradley, wmb@Eng.Sun.COM