tdf106013 Add-In functions that are also Excel2013 OOXML functions

[Winfried Donkers]

Hi Eike,

I'm sort of stuck with tdf106013.

There is a group of Add-In functions that were newly defined in Excel
2013 (IMCOSH, IMCOT, IMCSC, IMCSCH, IMSEC, IMSECH, IMSINH and IMTAN,
I'll call them IMxx).

In Calc these functions are defined in scaddins and also mentioned in
sc/source/filter/oox/formulabase.cxx in saFuncTable2013[].


The problem is that the IMxx functions saved as xlsx by Calc won't open
correctly by Excel and vice versa.

[...]

I just noticed that tdf100450 regarding the Add-in function ACCRINT has a similar problem.
It currently reflects pre-Excel2013 behaviour, but does not comply with ODFF1.2 or with the current Excel.

How to cope with old Add-In functions that now also exist as new Excel functions?

Winfried