[VA] SRC #012a - Then and Now: Probability

[Valentin Albillo]

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Hi, DavidM,

DavidM Wrote:

Valentin Albillo Wrote:Can someone please confirm that the listing is correct and will produce the stated result in the stated time ?

There were a few typos in Gjermund's posted SysRPL code. I've made some corrections to his version below to produce a program which appears to give the proper results, so hopefully I haven't introduced any new bugs in the process. I can confirm that his code produces the correct real result for 30-60 input in about 317 seconds on my physical 50g.

As I said, truly impressive, about 10x faster than a physical HP-71B running my original BASIC program. I guess that only an assembly language version of it would be able to approach the 50g's performance, perhaps J-F Garnier would obligue, it's certainly within his outstanding capabilities ...

Quote:Combine the above with the usual speed increase of SysRPL over UserRPL and you've got a significantly faster program than the original UserRPL version that C.Ret posted.

Indeed !

Quote:Here's Gjermund's program with the typos corrected: [...]

Fantastic ! It exceeds my best expectations of having a "certified" version of the SysRPL program, both for correct listing and accurate running time, a real gem of reliability and efficiency.

Thank you very, very much, DavidM, for taking the trouble to fulfill my request, and for your really detailed explanations of its inner workings, never mind the corrections and improvements. Posts like yours is what adds the most value to these humble threads of mine and makes them everlasting contributions to the art of programming these wonderful vintage HP calcs, for the benefit of all of us. Much, much appreciated !

Best regards.
V.