[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Octave-bug-tracker] [bug #47738] expint is inaccurate for certain imagi
|
From: |
Michele Ginesi |
|
Subject: |
[Octave-bug-tracker] [bug #47738] expint is inaccurate for certain imaginary inputs |
|
Date: |
Wed, 14 Dec 2016 14:26:04 +0000 (UTC) |
|
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0 |
Follow-up Comment #10, bug #47738 (project octave):
Dear Marco,
I've made some comparison and these are the results: the worst (relative)
error for myexpint is 4.7825e-14, while for matlab is 1.0334e-13.
In the parts of the complex plane where Matlab make a better approximation,
the worst error for Matlab is 2.8209e-15, for myexpint is 4.7825e-14.
Talking about the execution time, Octave's expint needs 5.69309 sec, Matlab's
expint needs 0.515487 sec and myexpint needs 0.420296 sec.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?47738>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/