Hi Eike, I have been studying ODFFv1.2 part 2 §4.11.7.7 with https://bugs.documentfoundation.org/show_bug.cgi?id=69569#c17 , lines 1..5. in mind. My conclusions are that a) Line 8 should be " 8.Otherwise, if _(not A)_ and is-leap-year(year(date1)) then return 366 "; b) Lines 9 and 10 can be combined by appending inclusive to both dates, the current line 9 is ambiguous and line 10 does not fully solve that; c) The constraint date1 >= date2 is missing in §4.11.7. I have made logical diagrams to cheack that all possible combinations of date1 and date2 are covered - on the presumption that date1 >= date2. If you agree with my conclusions, would it be possible that you submit a proposal for changing ODFF to reflect the above? I think that a proposal from you is more effective than one from me ;-) And if you agree with my conclusions I intend to work on bug tdf69569 to implement the proposed changes (c is already implemented in /core/scaddins/source.analysis/analysishelper.cxx, getYearFrac(.)). Winfried _______________________________________________ LibreOffice mailing list LibreOffice@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/libreoffice