From: cowan@mercury.ccil.org (John Cowan)
Subject: [TUHS] why is sum reporting different checksum's between v6 and v7
Date: Fri, 11 Dec 2015 20:50:04 -0500 [thread overview]
Message-ID: <20151212015004.GA15143@mercury.ccil.org> (raw)
In-Reply-To: <20151212012257.3740418C0AA@mercury.lcs.mit.edu>
Noel Chiappa scripsit:
> I have this bit set that in C, 'char' is defined to be signed,
If you mean in PDP-11 C, you're right, char is signed precisely because
MOVB sign extends. In C in general, char's signedness is undefined.
Similarly the signedness of a bitfield is undefined, which means that
the portable range of a 1-bit field is just 0, though there is another
value that might be +1 or -1.
--
John Cowan http://www.ccil.org/~cowan cowan at ccil.org
Eric Raymond is the Margaret Mead of the Open Source movement.
--Bruce Perens, a long time ago
next prev parent reply other threads:[~2015-12-12 1:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-12 1:22 Noel Chiappa
2015-12-12 1:46 ` Random832
2015-12-12 1:50 ` John Cowan [this message]
-- strict thread matches above, loose matches on Subject: below --
2015-12-12 0:30 Noel Chiappa
2015-12-12 1:07 ` Random832
2015-12-12 0:03 Will Senn
2015-12-12 0:10 ` Clem cole
2015-12-12 0:38 ` Random832
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