[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Octave-bug-tracker] [bug #42589] Inaccurate results with the colon oper
From: |
Michael Godfrey |
Subject: |
[Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator |
Date: |
Tue, 24 Jun 2014 16:11:39 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0 |
Follow-up Comment #29, bug #42589 (project octave):
@Rik, Expected is a better word. But matching Matlab is
not, I think, a good target. In the specific case of
using extended bits on but the bits ignored (as Matlab once did)
Octave should, according to Kahan, achieve a factor
of 2 improvement in precision. The cost appears to be
lack of exactly matching Matlab and the possibilitry that
very old not fully FP 754 compliant systems will produce
different results.
Since it is widely held that Matlab made a mistake in
turning extended bits off (for exact compatibility across
all "supported" systems Octave making a better choice
should be a definite selling point.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?42589>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, (continued)
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Julien Bect, 2014/06/21
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/21
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Julien Bect, 2014/06/22
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Michael Godfrey, 2014/06/22
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/22
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Michael Godfrey, 2014/06/22
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Jordi GutiƩrrez Hermoso, 2014/06/23
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Julien Bect, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Julien Bect, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator,
Michael Godfrey <=
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, John W. Eaton, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, John W. Eaton, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/24
- [Octave-bug-tracker] [bug #42589] Inaccurate results with the colon operator, Rik, 2014/06/26