[Libreoffice-bugs] [Bug 137679] Implement a Kahan summation algorithm to reduce the numerical error in the total

bugzilla-daemon at bugs.documentfoundation.org bugzilla-daemon at bugs.documentfoundation.org
Sat May 15 14:52:04 UTC 2021


https://bugs.documentfoundation.org/show_bug.cgi?id=137679

--- Comment #65 from b. <newbie-02 at gmx.de> ---
Created attachment 172026
  --> https://bugs.documentfoundation.org/attachment.cgi?id=172026&action=edit
testsheet Neumaier Kahan–Babuška working well

hello @Dante, 

did some 'poking around', and - think - have found proof that better results
are possible, 

would you mind having a look into the attached file, explanations in the sheet
explanation, 

trying NeumaierSum from https://en.wikipedia.org/wiki/Kahan_summation_algorithm
in a calc sheet, works, not 100%, but avoids the '12,45' fail. 

(as with all work / suggestions from me ... recheck at least twice!, i'm human
and may fail) 

regards, 

b.

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