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[Octave-bug-tracker] [bug #31098] Incompatible spline behaviour


From: Marco Caliari
Subject: [Octave-bug-tracker] [bug #31098] Incompatible spline behaviour
Date: Thu, 30 Sep 2010 08:43:50 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.11) Gecko/2009060214 Firefox/3.0.11

Follow-up Comment #3, bug #31098 (project octave):

The implementation of Horner's scheme in polyval is straightforward (see the
attachment). It fixes the difference between ppval and polyval and it is much
faster: on my pc, the evaluation of

polyval(rand(1,100),rand(100))

drops from 0.123 to 0.019.
Maybe I should start a new item.

Marco

(file #21579)
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Additional Item Attachment:

File name: polyval.m.diff                 Size:0 KB


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  <http://savannah.gnu.org/bugs/?31098>

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