In both Word and Excel, there are Application.CentimetersToPoints. However, they return different types: Word's return Single [1], while Excel's returns Double [2]. Note that the argument types they take are also different.

Create a text document in Writer; add a macro *to it* (Application object seems to only be available from document modules):


Option VBASupport 1

Sub Main
  msgbox TypeName(Application.CentimetersToPoints(1))
End Sub

The result is the expected "Single".

Now repeat the process with a Calc document. The same macro must give "Double", but gives the same "Single".

The common method is declared in ooo::vba::XApplicationBase [3], and defined in VbaApplicationBase [4].

Interesting thing is, that for Word VBA Application, this function is *also* declared in XApplication [5], and overloaded in SwVbaApplication [6], together with other conversion function absent from Excel's Application object.

I suspect that initially, it was assumed that same-name methods in both VBA Application objects were the same, hence it was declared in the common ancestor class. However, the methods are different, so it makes sense to remove it from the ancestor, and declare/define in Excel VBA Application compatibility class (ScVbaApplication).

[1] https://docs.microsoft.com/en-us/office/vba/api/Word.Application.CentimetersToPoints
[2] https://docs.microsoft.com/en-us/office/vba/api/Excel.Application.CentimetersToPoints
[3] https://opengrok.libreoffice.org/xref/core/oovbaapi/ooo/vba/XApplicationBase.idl?r=5687eba4#40
[4] https://opengrok.libreoffice.org/xref/core/vbahelper/source/vbahelper/vbaapplicationbase.cxx?r=da9b11a5#410
[5] https://opengrok.libreoffice.org/xref/core/oovbaapi/ooo/vba/word/XApplication.idl?r=c9b57b72#55
[6] https://opengrok.libreoffice.org/xref/core/sw/source/ui/vba/vbaapplication.cxx?r=c9b57b72#416