From: Chris Friesen <cfriesen@nortelnetworks.com>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Matthew Dobson <colpatch@us.ibm.com>, Paul Jackson <pj@sgi.com>,
LKML <linux-kernel@vger.kernel.org>,
"Martin J. Bligh" <mbligh@aracnet.com>,
Andrew Morton <akpm@osdl.org>, Dave Hansen <haveblue@us.ibm.com>
Subject: Re: [PATCH] mask ADT: bitmap and bitop tweaks [1/22]
Date: Tue, 30 Mar 2004 10:53:07 -0500 [thread overview]
Message-ID: <406997E3.60005@nortelnetworks.com> (raw)
In-Reply-To: <20040329235233.GV791@holomorphy.com>
William Lee Irwin III wrote:
> On Mon, Mar 29, 2004 at 03:06:16PM -0800, Matthew Dobson wrote:
>>If we're
>>not assuming the unused bits are 0's, then we need to do this last word
>>special casing in bitmap_xor & bitmap_andnot, because they could set the
>>unused bits. Or am I confused?
>
>
> No, not those two. xor of 0's is 0 again. and of 0 and anything is 0 again.
Huh? Xor of 0 and 1 is 1.
Chris
next prev parent reply other threads:[~2004-03-30 15:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-29 12:12 [PATCH] mask ADT: bitmap and bitop tweaks [1/22] Paul Jackson
2004-03-29 23:06 ` Matthew Dobson
2004-03-29 23:52 ` William Lee Irwin III
2004-03-29 23:43 ` Paul Jackson
2004-03-30 1:27 ` Matthew Dobson
2004-03-30 2:06 ` William Lee Irwin III
2004-03-30 1:46 ` Paul Jackson
2004-03-30 2:55 ` William Lee Irwin III
2004-03-30 5:09 ` Paul Jackson
2004-03-30 6:36 ` William Lee Irwin III
2004-03-30 8:00 ` Paul Jackson
2004-03-30 9:22 ` William Lee Irwin III
2004-03-29 23:50 ` Paul Jackson
2004-03-30 15:53 ` Chris Friesen [this message]
2004-03-30 18:30 ` Paul Jackson
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