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ttw · 03-08-2019, 10:17 PM

(03-08-2019 10:02 PM)Raymond Del Tondo Wrote: There were some people developing SDK solvers for different platforms back then,
at least one in User RPL for the 49g, and another in RPL for the HP 48 Series.
However they all had the same restriction: Slow data handling using matrices or lists.

I setup the structures for one last week. It wasn't the slowness so much but incompatibilities of data types on the HP50g. (Earlier releases didn't seem to have some of these problems though.) First, binary integers cannot be in matrices necessitating lots of conversions in and out. Second, REPL (needed for easy sub-matrix work) fails when the new item is real. This requires all work to be done in exact integers (though 9-bit numbers are sufficient.) I coded around this but the debugging of type changes got tiresome.