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Talk:Kahan summation: Difference between revisions

(→‎So far, in J and R: Self scaling?)
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::::Just found this R info: https://www.stat.auckland.ac.nz/~stat782/downloads/04-Numerics.pdf. according to that, R is floating point and the FP task section should be followed. --[[User:Paddy3118|Paddy3118]] ([[User talk:Paddy3118|talk]]) 18:56, 12 December 2014 (UTC)
 
::::OK, indeed the options() call just restricts the number of digits being displayed, not the actual number used in calculations. In that respect it is in the same boat as PHP. AFAIK there is a package (not a base component) that can deal with arbitrary precision (http://cran.r-project.org/web/packages/Rmpfr/), but that is not what this particular task is aiming to show. I have redone the operations and results on a Windows 7 64-bit machine from a friend, will check again on my Ubuntu 64-bit box to corroborate the results. --[[User:Jmcastagnetto|jmcastagnetto]] ([[User talk:Jmcastagnetto|talk]]) 02:11, 17 December 2014 (UTC)
 
==So far, in J and R==
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