WP 31S available at SourceForge

[walter b]

(04-21-2014 01:23 PM)Dieter Wrote:  

(04-18-2014 07:12 PM)walter b Wrote:  FYI, we've got a problem with the commands contained in DISTR.

Indeed. There are also some troubles with the 34s versions that have been mentioned earlier. For instance a simple case like t ^–1 (p=0,01, df=10) runs for more than 15 seconds on a hardware 34s. So I tried a program in user code, et voilà: less than 5 seconds (resp. 6 in DP). Now imagine how fast this would run in compiled C-code. I assume there's something wrong with the initial guess for the Student quantile. In the above case the method I originally suggested starts with |t|=2,781... (result: –2,7637...), which requires just 4 resp. 5 iterations.

That's Pauli's realm.

Quote:

Quote:Everything else seems to be working just fine.

I beg to differ. Remember the calendar issue and the PRIME? test.

Thanks for the reminder. PRIME? should be done (but not built yet) and the calendar might well be solved like on the WP 34S.

Quote:BTW - are there any plans on exposing DP mode to the user? If not, several time-consuming 31s functions (especially the distributions) may be rewritten for much faster execution. Remember the HP35 design goal, more than four decades ago: the user should not wait for more than a second until the result appears. ;-)

DP will not be user-accessible on the WP 31S. Re-writing SW goes to Pauli again.

d:-)