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From: | Rik |
Subject: | [Octave-bug-tracker] [bug #49523] eigs (R2013b and later) uses NaNs, not zeros, for unconverged Ritz values |
Date: | Thu, 23 Nov 2017 13:30:30 -0500 (EST) |
User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 |
Follow-up Comment #17, bug #49523 (project octave): @Marco: I had originally proposed setting just the real part to NaN. But, I agree with you that it looks nicer if NaN + NaNi is returned for complex unconverged eigenvalues. I don't think it matters from a performance standpoint if we post-process the list of eigenvalues because the number is going to be small, say 50 eigenvalues, relative to the size of the sparse matrix itself which could have thousands to millions of rows or columns. I'll accept whatever you feel is best. _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?49523> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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