From: "Jean-Christophe Filliâtre" <Jean-Christophe.Filliatre@lri.fr>
To: Matteo Frigo <athena@fftw.org>
Cc: Xavier Leroy <Xavier.Leroy@inria.fr>, caml-list@inria.fr
Subject: Re: [Caml-list] Re: Binary logarithm of a power of 2
Date: Mon, 30 May 2011 13:48:10 +0200 [thread overview]
Message-ID: <4DE383FA.9010505@lri.fr> (raw)
In-Reply-To: <87y61qvhmo.fsf@fftw.org>
> Knuth Vol. 4A remarks that this is an old trick, invented but not
> published by some gentleman at IBM in the late sixties. (Sorry, I don't
> have Knuth at hand for an exact reference.) However the 1998 paper by
> Leiserson et al. should be available via google.
Another good reference along these lines: Henry Warren's "Hacker's
Delight" (http://www.hackersdelight.org/). My apologies if already
mentioned in this thread.
This book is wonderful and contains many ways to compute the number of
trailing zeros, among other things. (It is cited in volume 4A.)
--
Jean-Christophe
next prev parent reply other threads:[~2011-05-30 11:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-26 15:51 [Caml-list] " Dario Teixeira
2011-05-26 19:28 ` Goswin von Brederlow
2011-05-27 11:50 ` Dario Teixeira
2011-05-27 13:26 ` [Caml-list] " Sylvain Le Gall
2011-05-27 17:15 ` Xavier Leroy
2011-05-27 18:04 ` Dario Teixeira
2011-05-27 18:37 ` Till Varoquaux
2011-05-27 18:46 ` Till Varoquaux
2011-05-28 0:28 ` Harrison, John R
2011-05-28 15:58 ` Richard W.M. Jones
2011-05-28 16:04 ` Edgar Friendly
2011-05-28 17:50 ` Matteo Frigo
[not found] ` <BANLkTimtMZvoBKHznBYH91czci=YdiRcog@mail.gmail.com>
2011-05-28 21:13 ` Fwd: " Johannes
2011-05-30 11:48 ` Jean-Christophe Filliâtre [this message]
2011-05-27 17:21 Dario Teixeira
2011-05-28 5:29 ` Gabriel Kerneis
2011-05-28 16:17 ` Norman Hardy
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