Thomas Beutlich

> Tested revision: [f9bddf8](https://github.com/modelica/ModelicaStandardLibrary/commit/f9bddf86b19027bf2223b3e5a29647a35550e5d5) (2024-02-16) f9bddf86b19027bf2223b3e5a29647a35550e5d5 is not part of v4.1.0-beta.1. Should it be da5c5de71f574b33a4f4631e09ba79682755f6d0?

I am confused. I ran the result comparison of ModelicaTest.Tables of MSL4.1.0-beta.1 w.r.t. MSL v4.0.0 and get different comparison errors, see https://beutlich.github.io/MSLTEST410BETA1FAILED_Tables/

We had two bug fixes for CombiTable2D, which fixed the interpolation and 2-nd derivatives in case of extrapolation by constant continuation: https://github.com/modelica/ModelicaStandardLibrary/blob/da5c5de71f574b33a4f4631e09ba79682755f6d0/Modelica/Resources/C-Sources/ModelicaStandardTables.c#L47-L56

> development seems to be performed in both branches, which is maximal confusing ... Hm, it indeed doubles the workload, but it should not be confusing since main development happens...

@GallLeo I have problems in opening the comparison links, e.g. https://www.ltx.de/download/MA/Compare_MSL_v4.1.0/Compare/ModelicaTest/20240316005556/ModelicaTest.Tables.CombiTable2Ds.Test26/CSVCompare/Test26_report.html 

> The regression tests of LTX cover the branch "master". Being called "MSL 4.1.0 Regressions" - they should no longer run from master, but from maint/4.1.0 branch.

> We had two bug fixes for CombiTable2D, which fixed the interpolation and 2-nd derivatives in case of extrapolation by constant continuation: @HansOlsson Regarding ModelicaTest.Tables.CombiTable2Ds.Test26 the issue is in the...

> I am confused. I ran the result comparison of ModelicaTest.Tables of MSL4.1.0-beta.1 w.r.t. MSL v4.0.0 and get different comparison errors Hm, not sure what I did then, but I...

@HansOlsson Can you please define the expected value of ModelicaTest.Tables.CombiTable2Ds.Test26.d2_t_new.y at time=1? I believe it should be -8 (as is the case in MSL v4.0.0 and also sensible when loooking...

> That is clearly non-sense, and blocking. Thanks for finding. It is addressed by #4415.