Search found 1635 matches

by Jaymos
Wed Mar 13, 2024 9:05 am
Forum: C47/C43, WP43, WP34S
Topic: Inquiry: C47 Bigint Capabilities
Replies: 26
Views: 929

Re: Inquiry: C47 Bigint Capabilities

Support of Unix-like systems could be promoted a bit more visible. The so-called user wiki has since a few days the page https://gitlab.com/h2x/c47-wiki/-/wikis/Installation-and-Setup that refers to the user-extended page https://gitlab.com/h2x/c47-wiki/-/wikis/Build-instructions, which actually wa...
by Jaymos
Wed Mar 13, 2024 6:57 am
Forum: C47/C43, WP43, WP34S
Topic: Inquiry: C47 Bigint Capabilities
Replies: 26
Views: 929

Re: Inquiry: C47 Bigint Capabilities

The key step is having a factorization function. You know, give it an integer and it puts out the canonical ordered representation as product of powers of primes. The HP-50g does this nicely. E.g. 156 -> 2^2*3*13. Once you have that, the phi-function is very easy to calculate. So are some other num...
by Jaymos
Tue Mar 12, 2024 11:04 pm
Forum: C47/C43, WP43, WP34S
Topic: Inquiry: C47 Bigint Capabilities
Replies: 26
Views: 929

Re: Inquiry: C47 Bigint Capabilities

…I consider a bigint to be distinct from a word type, which would be used for logic operations like xor. The difference being that bigint is usually a growable data structure capable of handling thousands of digits. Yes, we do a ‘long integer’ data type which is good for 1000 digits (base 10). This...
by Jaymos
Mon Mar 11, 2024 6:35 pm
Forum: C47/C43, WP43, WP34S
Topic: C47: Integration performance and accuracy
Replies: 42
Views: 4041

Re: C47: Integration performance and accuracy

In an earlier post in this thread I commented on the speed of the simulator - only counting up to 800 in 10s, whereas the real calculator managed ten times this. I've tried the test again today, and now the simulator reaches nearly 4 million in 10s! This speed increase also shows when solving equat...
by Jaymos
Wed Mar 06, 2024 11:02 pm
Forum: C47/C43, WP43, WP34S
Topic: C47: Integration performance and accuracy
Replies: 42
Views: 4041

Re: C47: Integration performance and accuracy

Thanks for your comments and explanation of how the shift mode can be used. I'll try that later and tell you what I think. Meanwhile, I've attached a patch file for the code (with a fake extension). I've updated to the latest version of the master branch and taken the diff against that, if that's t...
by Jaymos
Wed Mar 06, 2024 1:35 am
Forum: C47/C43, WP43, WP34S
Topic: C47: Integration performance and accuracy
Replies: 42
Views: 4041

Re: C47: Integration performance and accuracy

Nigel, what a massive effort !!! Wow, I would like to get your changes into the code base, we could try: 1. I can link directly into your fork if you have it on Gitlab. A quick search on Gitlab did not show me something that looks like your project 2. Or send me a patch file please; since I've been ...
by Jaymos
Mon Mar 04, 2024 10:33 pm
Forum: C47/C43, WP43, WP34S
Topic: C47 State Files size and contents
Replies: 11
Views: 892

Re: C47 State Files size and contents

Could you, please, post two different state files as zip archives? Maybe the first and the last one, e.g.? I have attached the first one, one in the middle and the last one in the zip file (18Kb, 41Kb and 73Kb). The sample files helped - we had a look, and Over_Score found this minute little hairy ...
by Jaymos
Mon Mar 04, 2024 7:41 pm
Forum: C47/C43, WP43, WP34S
Topic: C47: Community Wiki, a question regarding customizing number and date formats
Replies: 1
Views: 148

Re: C47: Community Wiki, a question regarding customizing number and date formats

This page here, https://gitlab.com/h2x/c47-wiki/-/wikis/Getting-Started-Guide-v2/Quick-Tips-and-Other-Key-Notation-Examples/Customizing-Number-and-Date-Formats starts with an example which I interpret as follows: Enter 1, enter a decimal separator, enter 5, (g-shift) [ i ], enter 3, enter 0, press ...
by Jaymos
Sun Mar 03, 2024 3:59 pm
Forum: C47/C43, WP43, WP34S
Topic: C47: Suggestion regarding INFO menu and statefiles
Replies: 10
Views: 463

Re: C47: Suggestion regarding INFO menu and statefiles

Would this appear under INFO indefinitely? If I load a state and then work with it for a month--overwriting stack values, defining/redefining variables and registers, modifying a program--would it still list the name of the out-of-date state file? To me it feels like a bit of an error trap since a ...
by Jaymos
Sat Mar 02, 2024 11:32 pm
Forum: C47/C43, WP43, WP34S
Topic: C47: Suggestion regarding INFO menu and statefiles
Replies: 10
Views: 463

Re: C47: Suggestion regarding INFO menu and statefiles

Would this appear under INFO indefinitely? If I load a state and then work with it for a month--overwriting stack values, defining/redefining variables and registers, modifying a program--would it still list the name of the out-of-date state file? To me it feels like a bit of an error trap since a ...