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[Octave-bug-tracker] [bug #32121] logm returns complex numbers
From: |
Gunnar Farnebäck |
Subject: |
[Octave-bug-tracker] [bug #32121] logm returns complex numbers |
Date: |
Tue, 01 Feb 2011 20:14:41 +0000 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20110107 Iceweasel/3.5.16 (like Firefox/3.5.16) |
Follow-up Comment #2, bug #32121 (project octave):
Actually no threshold is needed in this specific case. A real matrix without
non-positive real eigenvalues always has a real logarithm, and as far as I can
tell the employed algorithm does find the real solution, so any imaginary
parts should be due to numerical imprecision and can be thrown away.
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- [Octave-bug-tracker] [bug #32121] logm returns complex numbers,
Gunnar Farnebäck <=