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Re: FYI: sum improved


From: Søren Hauberg
Subject: Re: FYI: sum improved
Date: Tue, 13 Oct 2009 13:13:14 +0200

tir, 13 10 2009 kl. 12:38 +0200, skrev Jaroslav Hajek:
> the built-in "sum" function was improved:
> http://hg.savannah.gnu.org/hgweb/octave/rev/192d94cff6c1

Nice :-) It's always great to see improvements to the basic stuff.

> "sum" now accepts an 'extra' option that makes it use a special
> summation algorithm, compensating for loss of precision (slightly more
> sophisticated than the well-known Kahan's).

The name of the 'extra' option seems somewhat odd to me. Perhaps it
should be called 'extra-precise', 'improve-accuracy', or something like
that?

Soren



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