[sage-devel] elliptic_e(0.5, 0.1) differs from Mathematica 7 by about 0.04%.
Subject: [sage-devel] elliptic_e(0.5, 0.1) differs from Mathematica 7 by about 0.04%.
From: Dr. David Kirkby
Date: Sun, 09 Aug 2009 21:14:34 +0100
Dr. David Kirkby wrote:
> I've built Sage on a sun4u SPARC machine, using Maxima 5.19.0 and ECL 9.8.1
>
> Sage fails about 15 tests, one of which is below. I computed the result
> in Mathematica too, and find the result on the SPARC does differ from
> what Sage expects, and the result Sage expects is much closer to the
> result from Mathematica.
>
> sage: elliptic_eu (0.5, 0.1)
> Expected:
> 0.496054551287
> Got:
> 0.495848403419
sorry, I posted the wrong result - there is this failure, but the one I
meant to post was:
sage: elliptic_e(0.5, 0.1)
Expected:
0.498011394499
Got:
0.497801100392
Mathematica gives: 0.49801139449883153311546104061744810584963105068054