Bug 132083 shows an unexpected result of a simple date & time calculation. If you feed the very same values into the date & time functions of Calc and StarBasic you will get different results.
Steps to Reproduce:
Open the attachted example file in a context that allows the execution of macros.
The Calc version of the MINUTE function returns a 9 minutes difference, the StarBasic version 10 minutes.
Both versions of the MINUTE function should return 10 minutes as this is the difference between 18 and 8.
User Profile Reset: No
Calc Version: 220.127.116.11, Build-ID: 1:6.4.3-0ubuntu0.20.04.1, CPU-Threads: 4; BS: Linux 5.4; UI-Render: Standard; VCL: gtk3; Gebietsschema: de-DE (de_DE.UTF-8); UI-Sprache: de-DE, Calc: threaded
Created attachment 161278 [details]
Example file demonstrating different results of date & time functions
The usual confusion of timestamp and duration. The example applies the non-rounding MINUTE() wall clock / timestamp spreadsheet function on a time difference or duration value with a slight imprecision.
=A5*24 => 0.166666666388889
=A5*24*60 => 9.99999998333333
I don't know if there is a standard definition (VBA?) for the BASIC Minute() function, but the spreadsheet MINUTE() function is defined to not round, see https://docs.oasis-open.org/office/OpenDocument/v1.3/cs01/part4-formula/OpenDocument-v1.3-cs01-part4-formula.html#MINUTE
The difference between not-/rounding is also visible by applying the HH:MM:SS wall clock number format (00:09:59) instead of the correct [HH]:MM:SS duration format (00:10:00) on A5.
Created attachment 161500 [details]
Example file demonstrating different results of date & time functions update
(In reply to Eike Rathke from comment #2)
> The usual confusion of timestamp and duration.
Did I get timestamp and duration right this time?
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