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new norms (Re: Octave.app 2.9.15)
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From: |
Vic Norton |
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Subject: |
new norms (Re: Octave.app 2.9.15) |
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Date: |
Tue, 16 Oct 2007 09:19:29 -0400 |
On Oct 14, 2007, at 3:24 PM, Thomas Treichl wrote:
I just uploaded the compressed disc images *dmg including
Octave.app 2.9.15 for MacOSX to the Sourceforge's server.
I've just installed Octave.app 2.9.15, and I see that the vector norm
functions, norm(x) and norm(x, 1), are now considerably faster than
their equivalent expressions,
sqrt(sum( x .* x )) and sum(abs( x )).
This is a big change from octave-2.9.14! Thanks to whomever is
responsible!
Next problem: make norm(x, 1) faster than max(sum(abs(x))) for
matrices x.
Regards,
Vic