I read of the accuracy test performed using 9 sin cos tan arc tan arc cos arc sin in sequence. In the 50g in the degrees mode it shows 8.999999864267. I wondered how it would perform in the radians mode so I used Pi/20 (same 9 degrees) repeated the test and divided the results into the original angle and multiplied by 9 to get a comparable number (9). It showed 8.999999999995
It seems the algorithms are more compatible with the radian mode. Sam
Calculator forensics
|
|
« Next Oldest | Next Newest »
|
▼
06-05-2008, 08:27 PM
▼
06-06-2008, 01:25 AM
Quote: Hi, Sam -- Have a look here (discussion from me): http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv017.cgi?read=113143#113143 And here (discussion from Valentin): http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv014.cgi?read=69026 In fairness, the author of the forensic did not intend it to be a measure of a calculator's general accuracy; he intended it to be an indicator of internal algorithms and precision for purposes of comparison between models. -- KS |
Possibly Related Threads… | |||||
Thread | Author | Replies | Views | Last Post | |
HP-15C LE calculator forensics? | Joel Setton (France) | 19 | 4,341 |
09-11-2011, 08:01 AM Last Post: Dieter |
|
Mike Sebastian's Calculator Forensics | Joerg Woerner | 15 | 3,316 |
03-10-2011, 09:06 AM Last Post: Gerson W. Barbosa |
|
The forensics algorithm for the 10s | Palmer O. Hanson, Jr. | 4 | 1,403 |
01-19-2010, 11:25 PM Last Post: Katie Wasserman |
|
Re: EXCEL2002 Forensics | Gordon Dyer | 1 | 784 |
01-15-2003, 08:54 PM Last Post: Karl Schneider |