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Re: (-1)**1000

From Peter Otten <__peter__@web.de>
Subject Re: (-1)**1000
Date 2014-10-22 13:02 +0200
Organization None
References <54476a77$0$21664$426a74cc@news.free.fr> <mailman.15058.1413968065.18130.python-list@python.org> <5447786d$0$12750$426a74cc@news.free.fr> <m280ur$aho$1@ger.gmane.org> <091815A9-38E8-4F34-AB03-F9402551DF9F@xs4all.nl>
Newsgroups comp.lang.python
Message-ID <mailman.15067.1413975741.18130.python-list@python.org> (permalink)

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Michiel Overtoom wrote:

> 
> On Oct 22, 2014, at 12:29, Peter Otten wrote:
> 
>> That looks like log(a) while a parity check takes constant time:
>> $ python3 -m timeit -s 'a = 10**10' 'a & 1'
> 
> 
> Do you mean 'parity' as in http://en.wikipedia.org/wiki/Parity_bit ? 
> Because a parity bit denotes whether the *number* of '1' bits is even or
> odd, not the value of the least significant bit.

No, I meant the lsb. The OP introduced the term 'parity'; not sure if that 
was erroneous, too, or if there is an angle to the problem that escapes me.

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Thread

(-1)**1000 "ast" <nomail@invalid.com> - 2014-10-22 10:27 +0200
  Re: (-1)**1000 Chris Angelico <rosuav@gmail.com> - 2014-10-22 19:54 +1100
    Re: (-1)**1000 "ast" <nomail@invalid.com> - 2014-10-22 11:27 +0200
      Re: (-1)**1000 Peter Otten <__peter__@web.de> - 2014-10-22 12:29 +0200
      Re: (-1)**1000 Michiel Overtoom <motoom@xs4all.nl> - 2014-10-22 12:38 +0200
      Re: (-1)**1000 Tim Chase <python.list@tim.thechases.com> - 2014-10-22 05:43 -0500
      Re: (-1)**1000 Peter Otten <__peter__@web.de> - 2014-10-22 13:02 +0200
      Re: (-1)**1000 Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-22 08:23 -0600
      Re: (-1)**1000 Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-22 08:29 -0600
      Re: (-1)**1000 Ned Batchelder <ned@nedbatchelder.com> - 2014-10-22 11:01 -0400
    Re: (-1)**1000 wxjmfauth@gmail.com - 2014-10-22 04:35 -0700
  Re: (-1)**1000 Peter Otten <__peter__@web.de> - 2014-10-22 11:13 +0200
  Re: (-1)**1000 Terry Reedy <tjreedy@udel.edu> - 2014-10-22 13:15 -0400
  Re: (-1)**1000 Dave Angel <davea@davea.name> - 2014-10-24 13:57 -0400
  Re: (-1)**1000 Tony the Tiger <tony@tiger.invalid> - 2014-10-26 20:07 +0000
    Re: (-1)**1000 Ned Batchelder <ned@nedbatchelder.com> - 2014-10-26 16:45 -0400
    Re: (-1)**1000 Stefan Behnel <stefan_ml@behnel.de> - 2014-10-29 20:31 +0100

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