From: Richard Henderson <rth@redhat.com>
To: Wei Qin <wqin@EE.Princeton.EDU>
Cc: nathan@cs.bris.ac.uk, kelley.r.cook@gm.com,
Preeti Aira <ms_preeti@hotmail.com>, gcc <gcc@gcc.gnu.org>,
gcc-help <gcc-help@gcc.gnu.org>
Subject: Re: Number of 1's in 64 bit number...[don't read if not interested in algos/math...]
Date: Thu, 25 Apr 2002 15:15:00 -0000 [thread overview]
Message-ID: <20020425151327.A2527@redhat.com> (raw)
In-Reply-To: <Pine.SOL.4.43.0204251500020.27320-100000@ivy.ee.princeton.edu>; from wqin@EE.Princeton.EDU on Thu, Apr 25, 2002 at 03:12:07PM -0400
On Thu, Apr 25, 2002 at 03:12:07PM -0400, Wei Qin wrote:
> On a x86 linux platform, it takes 80% more time than the table lookup one.
On hot cache, maybe. On cold cache the arithmetic will
definitely be faster.
r~
next prev parent reply other threads:[~2002-04-25 22:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-25 9:46 kelley.r.cook
2002-04-25 10:13 ` Wei Qin
2002-04-25 10:36 ` Nathan Sidwell
2002-04-25 11:24 ` Gabriel Paubert
2002-04-26 2:41 ` [OT] Re: Number of 1's in 64 bit number...[don't read if not intereste d " Bernd Jendrissek
2002-04-26 4:23 ` Gabriel Paubert
2002-04-25 12:15 ` Number of 1's in 64 bit number...[don't read if not interested " Wei Qin
2002-04-25 15:15 ` Richard Henderson [this message]
2002-04-25 15:47 ` Wei Qin
2002-04-25 17:55 ` Daniel Berlin
-- strict thread matches above, loose matches on Subject: below --
2002-04-27 12:44 David Rasmussen
2002-04-24 21:55 Preeti Aira
2002-04-24 22:35 ` Alan Modra
2002-04-24 23:08 ` Vivek Srivastava
2002-04-24 23:51 ` Jaswant
2002-04-25 0:39 ` Gerald Pfeifer
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