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[Octave-bug-tracker] [bug #38628] bsxfun slow for complex
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From: |
Rik |
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Subject: |
[Octave-bug-tracker] [bug #38628] bsxfun slow for complex |
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Date: |
Thu, 04 Apr 2013 02:38:11 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0 |
Follow-up Comment #2, bug #38628 (project octave):
Exceedingly strange. This is, perhaps, a clue. If dx is promoted to a
complex matrix (with 0 for the imaginary part) then the bsxfun call goes back
to being extremely fast.
dxc = complex (dx);
tic; r = bsxfun (@times, dxc, ym); toc
Elapsed time is 0.005 seconds.
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