From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <ndokos@gmail.com>
Subject: Re: Precision in the spreadsheet
Date: Tue, 01 Mar 2016 11:59:30 -0500
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Marcin Borkowski <mbork@mbork.pl> writes:

> Hi all,
>
> is it at all possible to set different precision for display and
> calculations in Org's spreadsheet?  I mean, things like $1+$2;%.2f (as
> in the manual) mean (IIUC) that (1) Org should show 2 decimal figures
> and (2) further calculations which use this value also use this
> approximation.  Am I right?  If yes, is there a way to change this
> behavior?  (I suspect not, but I wanted to make sure.)
>

I believe that internally, calculations are done in 12-decimal place
precision: the %.2f is for display only.

See org-calc-default-modes for details.

--
Nick