DB48X: HP48-like RPL implementation for DM42

[raprism]

(11-05-2024 09:02 PM)c3d Wrote:  

(11-05-2024 06:18 PM)raprism Wrote:  Good hint. I remember that this was changed to get the envisaged functionality implemented on DM42.

To reduce the processing time to bit less than 1/2 minute for 10k loops, I have to set the precision to the minimum value of 3 (standard is 24). Any other means (without code optimizations) to increase the speed?

1) Use hardware floating point (enable HwFP and set precision to 7 or 16). That should run 10k loops in about 6.8s (32-bit FP, precision 7) or 8.9s (64-bit FP, precision 16).

2) Run it on an iPhone. On my iPhone 12, I run 10k loops at 36-digit in 4.3s with 0.8.3. It should be about 20% faster with 0.8.4.

1) is the right hint (2) is not an option for me.). Thanks, Linus.

Finally I've come across 6-performance.md on SumTest. This answers a lot ...

Btw Prec 24 and hwfp needs about 182.1s for 10k loops.

Btw the help files (db48x.md, db50x.md) are not up-to-date in section Decimal Numbers.