## Search found 12 matches

Wed Dec 01, 2021 3:51 pm
Forum: Usage tips, tricks and problem reports
Topic: SOLVE reentrancy
Replies: 4
Views: 292

### Re: SOLVE reentrancy

Thank you, Thomas!

I only tested this because I first looked for the lazy and luxurious solution before making an iterative approach myself.

I think, in the spirit of HP-42S, a single level "Solve" is normally sufficient.
Thu Nov 25, 2021 4:36 pm
Forum: Usage tips, tricks and problem reports
Topic: SOLVE reentrancy
Replies: 4
Views: 292

### Re: SOLVE reentrancy

Thanks Werner!
Thu Nov 25, 2021 1:17 pm
Forum: Usage tips, tricks and problem reports
Topic: SOLVE reentrancy
Replies: 4
Views: 292

### SOLVE reentrancy

I tried to use PGMSLV/SOLVE into a function used in the SOLVE application.
I got a message "solve(solve)" when executing SOLVE.
I suppose it's because SOLVE is not reentrant.

Or am I wrong ?
Sat Mar 20, 2021 7:51 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 3483

### Re: LOG bases

I did a small test with 5000 times LOG(X)/LOG(B) against LN(X)/LN(B). With LOG it was 17.6 seconds and with LN it was 18.05 seconds. Wondering why, I did the test without the division. There the LN version was 14.2 seconds and the LOG version 14.85 seconds. So, Thomas, the faster division compensat...
Sat Mar 20, 2021 12:39 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 3483

### Re: LOG bases

LOGb(X) = LN(X)/LN(b) ...is slightly faster :) Just curious: why is it faster a LN than a LOG? Because LN is calculated while LG is derived from LN. :geek: I did a small test with 5000 times LOG(X)/LOG(B) against LN(X)/LN(B). With LOG it was 17.6 seconds and with LN it was 18.05 seconds. Wondering ...
Fri Mar 19, 2021 5:10 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 3483

### Re: LOG bases

Do you mean this one:
LOGb(X) = LOG10(X)/LOG10(b)
If yes...no solver required
Fri Mar 12, 2021 10:45 am
Forum: DM42
Topic: Complex matrix inversion with issues
Replies: 21
Views: 4556

### Re: Complex matrix inversion with issues

Thanks Thomas. I was already very satified with this 68. But your are right ... it's their software ... I suppose they know what they are doing.
Sun Mar 07, 2021 4:17 pm
Forum: DM42
Topic: Complex matrix inversion with issues
Replies: 21
Views: 4556

### Re: Complex matrix inversion with issues

Thanks for the great info, Thomas. I tried to build a gcc111bcd library with the arm-tools, but I'm not shure what are the options taken by Swiss Micros, so I took another method to minimize the chance for trouble. I took the lib from the SM git repo, took bid128_hypot.o out of it. After disassembly...
Sat Mar 06, 2021 10:42 am
Forum: DM42
Topic: Complex matrix inversion with issues
Replies: 21
Views: 4556

### Re: Complex matrix inversion with issues

Great work, Thomas.

I am looking to upgrade the DM42 to this new version of Intel-BCD. The library for the DM42 in SwissMicros-git is called gcciiilibbid_hard.a. I was wondering if this can be replaced by the library created via your shell script build-intel-lib.sh for arm7 arch.

Greetings,

Johan.
Fri Mar 05, 2021 10:23 am
Forum: DM42
Topic: Complex matrix inversion with issues
Replies: 21
Views: 4556

### Re: Complex matrix inversion with issues

Thanks for your fast response, Thomas.
I downloaded the new version of Free42 and updated the Android App. It is running great.
I suppose the update of the DM42 firmware will take a little longer (I use the graphics of the DM42 in the program I'm busy with).

Again thanks and kind regards.
Johan.