Search found 186 matches

by salvomic
Tue Feb 23, 2021 2:25 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-22)

Thomas Okken wrote:
Tue Feb 23, 2021 1:52 pm
The problem in this thread appears to be due to insufficient precision, and that is a different issue. A problem for which the 53-bit mantissa used by Free42 Binary is insufficient, will likely also fail on the real HP-42S, with its 12-digit mantissa.
Thanks Thomas,
I didn't know that.

Salvo
by salvomic
Mon Feb 22, 2021 10:50 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-22)

Then it works well also your new version for Free42 2.25 (full interactive menu), but always with "Decimal" app. Thomas warned, indeed: «This inexactness can cause some HP-42S programs to fail. ... If you don't fully understand the above, it is best to play safe and use Free42 Decimal» Thi...
by salvomic
Mon Feb 22, 2021 10:32 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-22)

ok, I followed your instructions, but I got always the strange number -1734.7235... FF = 1/(1+x) point=3, order=2 with Free42s 2.25 in macOS 11 Salvo Schermata 2021-02-22 alle 22.30.22.jpg :: EDIT Found! (this could be interesting for Thomas) The problem is the "Binary" version instead of ...
by salvomic
Mon Feb 22, 2021 10:26 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-22)

ferni123 wrote:
Mon Feb 22, 2021 10:17 pm
You can use the Free42 2.5.25 in the computer. Enter in PRGM mode and copy the text using CTRl+C/CTRL+V.
maybe first removing all the comments :-)
I tried first with "Import" from menu (of the App) and I got various "END" label in XEQ...

ok, I'm trying so

Salvo
by salvomic
Mon Feb 22, 2021 9:53 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-22)

hi Fernando,
very clear explanation, thanks.
I'll try later, after having created the raw with the tool...

Salvo

EDIT: the Tool (https://technical.swissmicros.com/decod ... /index.php) doesn't know "FUNC 01" and not convert in .raw with such instructions.
It should be emended.

Salvo
by salvomic
Mon Feb 22, 2021 10:57 am
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-03)

thank again for your patience and kindness, I'll do so.
Salvo
by salvomic
Mon Feb 22, 2021 10:29 am
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-03)

Hi Salvo, I am getting the correct value in my calculator... 0.03125 (check that X, ACC and ORDER have the proper value). I will spend some time writing a sort of manual and examples. Cheers, Fernando thanks for your effort, very kind of you. I'll try other tries to understand where is the error he...
by salvomic
Mon Feb 22, 2021 10:12 am
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-03)

Regarding the accuracy, I have used the same definition as here: https://en.wikipedia.org/wiki/Finite_difference_coefficient and it is an integer which relates with the amount of elements used for the the derivative computation. By default, it is set to ORDER + 2. If you modify it, the label of the...
by salvomic
Sun Feb 21, 2021 10:35 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-03)

thanks a lot, Fernando! Salvo EDIT : I'm trying Calc (Deriv) in my Mac with Free42 test 2.25 and your new interactive version. Very interesting. Please, could you explain to me which values to put in "Accuracy"? I get a wrong (too high) value of the derivative or "out of range" o...
by salvomic
Sun Feb 21, 2021 10:29 pm
Forum: Software Library
Topic: Collection of functions for DM42/Free42 (updated on 2021-02-23)
Replies: 66
Views: 21121

Re: Collection of functions for DM42/Free42 (updated on 2021-02-03)

Hi Salvo, In the version that you are using, input the FF in Alpha and the top limit of the sum in X-register. Afterwards, run XEQ SUM1. The VARMENU will show up and you set the variable with the lower limit and select it pressing again on it. Notice that I have just uploaded a new version of CALC ...