Re: About divisions on the Taylor series in the error function

From	Robert Wessel <robertwessel2@yahoo.com>
Newsgroups	comp.programming
Subject	Re: About divisions on the Taylor series in the error function
Message-ID	<tcf6o7hml1brnlqiq2rr7h2p9ipdibshfk@4ax.com> (permalink)
References	<jlur7p$42p$1@dont-email.me>
Organization	Forte Inc. http://www.forteinc.com/apn/
Date	2012-04-09 14:52 -0500

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On Mon, 09 Apr 2012 16:20:34 +0200, hopcode <hopcode@invalid.de>
wrote:

>Hi,
>i am actually using the Marsaglia's method
>to calculate the error function from
>(snipped) this series
>x + x3/3 + x5/(3 · 5) + x7/(3 · 5 · 7)
>
>is there a way to avoid divisions in there?
>what about a method interpolating on a precalculated
>lookup table ?


Replace the divisions with the usual multiplications by the
reciprocal.

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About divisions on the Taylor series in the error function hopcode <hopcode@invalid.de> - 2012-04-09 16:20 +0200
  Re: About divisions on the Taylor series in the error function Robert Wessel <robertwessel2@yahoo.com> - 2012-04-09 14:52 -0500
    Re: About divisions on the Taylor series in the error function hopcode <hopcode@invalid.de> - 2012-04-10 03:02 +0200
      Re: About divisions on the Taylor series in the error function "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2012-04-10 10:14 +0200
      Re: About divisions on the Taylor series in the error function "BartC" <bc@freeuk.com> - 2012-04-10 09:28 +0100
      Re: About divisions on the Taylor series in the error function hopcode <hopcode@invalid.de> - 2012-04-11 04:33 +0200
  Re: About divisions on the Taylor series in the error function Rui Maciel <rui.maciel@gmail.com> - 2012-04-11 10:07 +0100
    Re: About divisions on the Taylor series in the error function hopcode <hopcode@nospicedham.invalid.de> - 2012-04-12 11:07 +0200

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