[WP-34S] DEG and RAD - diffs
06-05-2014, 01:38 PM (This post was last modified: 06-05-2014 04:39 PM by pito.)
Post: #6
 pito Member Posts: 127 Joined: Jun 2014
RE: [WP-34S] DEG and RAD - diffs
(06-05-2014 09:16 AM)Paul Dale Wrote:  ..
Also, your result above for radians is completely wrong. It simply isn't possible for the final arcsine step to return a value greater than 2π.
- Pauli
Do you mean this result?
Code:
8.999999999999999999999999999999979
That comes from two independent sources

@Dieter - of course we consider rad/deg conversions here, we do not calculate with 9 radians..
The "radian" test (we've messed with it in the cordic topic) runs in rad mode and does 9deg->rad, then the actual test runs, and then rad->deg.
The "degree" test runs in deg mode, internally it most probably does deg->rad and rad->deg with each trigo function used.
So in the "degree test" there is ~6x more conversions involved than in the "rad test".
I've updated my post above for clarity.

My current understanding is the diff comes mostly from the internal conversions. Considering the internal calcs run 39digit (thus the conversions) it seems to me the diff is rather big.
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