fdo69552 backward compatibility with optional arguments in calc functions

Winfried Donkers W.Donkers at dci-electronics.nl
Wed Nov 27 01:18:58 PST 2013

Hi Eike,

You reviewed https://gerrit.libreoffice.org/6767 and commented a.o.
"But more important, for backward compatibility file storage the parameter needs to be added when omitted so older versions still can calculate the function. See formula/source/core/api/token.cxx MissingConvention::isRewriteNeeded() and FormulaMissingContext::AddMoreArgs() and FormulaMissingContext::AddMissing()"

The problem I have here is that with CEILING() and FLOOR() the second argument (significance) is optional and has its default value (1 or -1) depending on the sign of the first argument (value). How do I obtain this value in formula/source/core/api/token.cxx FormulaMissingContext::AddMoreArgs() and FormulaMissingContext::AddMissing()?

The same problem may apply in sc/source/filter/excel/xeformula.cxx XclExpFmlaCompImpl::AppendTrailingParam(), but I take one hurdle at the time ;)

Any suggestions would be greatly appreciated.


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