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[Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2
From: |
Jordi Gutiérrez Hermoso |
Subject: |
[Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2) |
Date: |
Fri, 09 Dec 2011 16:30:09 +0000 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20110109 Waterpanther/3.6.13 |
Update of bug #35024 (project octave):
Status: None => Invalid
Open/Closed: Open => Closed
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Follow-up Comment #7:
Actually, reading the implementation of the GNU C++ abs(), it seems to
eventually get into a call to hypot, which does quite a bit of black magic to
my eyes with magic numbers and CPU registers in order to perform the
computation.
I suppose a different black magic path could be taken in Windows that accounts
for the difference in the result.
Closing this repprt.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?35024>
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- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), anonymous, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), Alois Schlögl, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), Michael Godfrey, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), anonymous, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), Jordi Gutiérrez Hermoso, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), anonymous, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), Jordi Gutiérrez Hermoso, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2),
Jordi Gutiérrez Hermoso <=
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), Michael Godfrey, 2011/12/09
- [Octave-bug-tracker] [bug #35024] magnitude abs(a) != sqrt(a_r^2 + a_i^2), marco atzeri, 2011/12/19