[WP-34S] DEG and RAD - diffs
06-06-2014, 05:27 PM
Post: #24
 Dieter Senior Member Posts: 2,397 Joined: Dec 2013
RE: [WP-34S] DEG and RAD - diffs
(06-06-2014 04:07 PM)Claudio L. Wrote:  Also ln() is very tricky (it's also in rotation mode), because the input to the CORDIC algorithm is (1-x) and (1+x). When x is close to one you lose a lot of digits in the first one, and when it's close to zero you lose them in the other one. Can't win.

Since we are talking about hyperbolic functions I assume you refer to artahn x = 1/2 ln[(1+x)/(1–x)]. Numerically this is not much of a problem as long as a ln1plusx function is available. This way artahn x can be written as 1/2 ln1plusx[2x/(1-x)]. Since already the 41-series offered such a function (as well as ex–1 for that matter) there might be a way to realize this function in CORDIC as well. I am sure you will have a definitive answer here. ;-)

Dieter
 « Next Oldest | Next Newest »

 Messages In This Thread [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 12:08 AM RE: DEG and RAD - diffs - Paul Dale - 06-05-2014, 12:53 AM RE: DEG and RAD - diffs - pito - 06-05-2014, 06:27 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-05-2014, 09:16 AM RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 01:38 PM RE: [WP-34S] DEG and RAD - diffs - Dieter - 06-05-2014, 11:12 AM RE: [WP-34S] DEG and RAD - diffs - Marcus von Cube - 06-05-2014, 05:45 PM RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 06:04 PM RE: [WP-34S] DEG and RAD - diffs - Marcus von Cube - 06-05-2014, 07:36 PM RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 07:57 PM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-05-2014, 09:38 PM RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 10:07 PM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-05-2014, 10:32 PM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-06-2014, 01:31 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 01:51 AM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014, 06:10 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 06:26 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 07:56 AM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014, 08:21 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 08:33 AM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-06-2014, 04:07 PM RE: [WP-34S] DEG and RAD - diffs - Dieter - 06-06-2014 05:27 PM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014, 05:53 PM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014, 06:07 AM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-06-2014, 04:24 PM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014, 05:42 PM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-06-2014, 07:53 PM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 10:53 PM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-07-2014, 01:46 AM RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-07-2014, 03:38 AM RE: [WP-34S] DEG and RAD - diffs - Paul Dale - 06-06-2014, 10:27 PM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-07-2014, 01:55 AM RE: [WP-34S] DEG and RAD - diffs - Claudio L. - 06-07-2014, 11:08 AM RE: [WP-34S] DEG and RAD - diffs - pito - 06-07-2014, 12:57 PM

User(s) browsing this thread: 1 Guest(s)