Re: Word length and number of bits in an integer

ralf on Fri, 19 Oct 2012 18:24:23 +0200

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Re: Word length and number of bits in an integer

To: Dirk Laurie <dirk.laurie@gmail.com>
Subject: Re: Word length and number of bits in an integer
From: ralf@ark.in-berlin.de
Date: Fri, 19 Oct 2012 18:16:05 +0200
Cc: pari-users@pari.math.u-bordeaux.fr
Delivery-date: Fri, 19 Oct 2012 18:24:23 +0200
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On Fri, Oct 19, 2012 at 05:58:11PM +0200, Dirk Laurie wrote:
> I need a routine for the exact smallest value B such that x>>B is zero,

f(n)=1+floor(log(n)/log(2))

should be very fast


Regards,
ralf

References:
- Word length and number of bits in an integer
  - From: Dirk Laurie <dirk.laurie@gmail.com>

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