From: Keith Thompson <kst@king.cts.com>
Subject: Re: null pointer representation (was: Boolean Representation)
Date: 1998/09/28
Date: 1998-09-28T00:00:00+00:00 [thread overview]
Message-ID: <yecu31su3gj.fsf@king.cts.com> (raw)
In-Reply-To: 6umkbn$pv5$1@nnrp1.dejanews.com
dewarr@my-dejanews.com writes:
[...]
> Certainly though, you are right, Null_Address can be assumed to be all
> zero bits in practice, but not Null.
Why is it safe to assume that Null_Address is all zero bits?
I'd normally expect it to have the same representation as a null
pointer, though of course that's not guaranteed either.
(In any case, since Null_Address is conveniently declared in System,
there's no need to assume anything about how it's represented.)
--
Keith Thompson (The_Other_Keith) kst@cts.com <http://www.ghoti.net/~kst> <*>
Qualcomm, San Diego, California, USA <http://www.qualcomm.com>
It takes a Viking to raze a village.
next prev parent reply other threads:[~1998-09-28 0:00 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-09-24 0:00 Boolean Representation matthew_snyder
1998-09-24 0:00 ` dewarr
1998-09-24 0:00 ` Samuel T. Harris
1998-09-25 0:00 ` dewarr
1998-09-27 0:00 ` Samuel T. Harris
1998-09-28 0:00 ` dewar
1998-09-24 0:00 ` matthew_snyder
1998-09-24 0:00 ` Tom Moran
1998-09-25 0:00 ` dewarr
1998-09-25 0:00 ` Tom Moran
1998-09-24 0:00 ` dennison
1998-09-25 0:00 ` Robert I. Eachus
1998-09-25 0:00 ` dewarr
1998-09-24 0:00 ` dennison
1998-09-24 0:00 ` Keith Thompson
1998-09-25 0:00 ` dennison
1998-09-25 0:00 ` Keith Thompson
1998-09-26 0:00 ` Tucker Taft
1998-09-26 0:00 ` Keith Thompson
1998-09-27 0:00 ` dewarr
1998-09-27 0:00 ` null pointer representation (was: Boolean Representation) Arthur Evans Jr
1998-09-27 0:00 ` Keith Thompson
1998-09-28 0:00 ` dewarr
1998-09-28 0:00 ` Keith Thompson [this message]
1998-09-28 0:00 ` dewarr
1998-09-30 0:00 ` Keith Thompson
1998-10-02 0:00 ` Robert I. Eachus
1998-09-28 0:00 ` Lieven Marchand
1998-09-27 0:00 ` Boolean Representation dewarr
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