Created attachment 80046 [details]
In the attached test case, the result of summing and multiplying cell values differs depending on the order with which the operators are applied
This is totally un-intuitive and error-inducing, calc should never let
sum(foo)×0,95 ≠ sum(foo×0,95)
In column A there are cells with a quote-mark (') in front of them. If you delete them, the result is correct.
Following some documentation I found, a single-quote in front of a cell value is a 'force-text' mark. These cells are handled as text. So the SUM() function just skip those cells, and doesn't count them. Remove the single-quotes, result in good behavior.
That is not the point of the bug
sum will ignore the cell, but multiply won't
I'm asking for consistent behaviour here
a moment, I'll fiddle with the bug status to mark it again as UNCONFIRMED. Someone else'd take a look.
> Following some documentation I found, a single-quote in front of a cell
> value is a 'force-text' mark. These cells are handled as text. So the SUM()
> function just skip those cells, and doesn't count them. Remove the
> single-quotes, result in good behavior.
I agree, single-quote followed by value should be treated as text. But cell B1,B2,B5,etc treat cell A1,A2,A5 as value.
Doing short testing, found that behavior not only applies to multiplication but also applies to addition, subtraction, division. SUM function goes correctly by ignoring cell with single-quote.
I think it's a bug. Tested on LO 184.108.40.206 (Win7 32bit)
(In reply to comment #5)
Lets mark it as such then :-). NEW.
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This NEW Message was generated on: 2015-03-03
The inconsistency has been solved in LibreOffice 4.3. Indeed you can now choose how to handle text representing numbers in formulas. If you choose treat as zero, both formulas give the same result.
To choose how text is converted to number: menu Tools > Options > LibreOffice Calc > Formula > Detailed calculation settings > Custom
Closing as WorksForMe.
If you think that SUM() should comply with this setting, please file a new bug report.
If you think that the documentation of the SUM function should tell that it does not comply with this setting, please file a bug report proposing a short text to be added to the help.
Best regards. JBF