WP32S in 2016?

01122016, 12:08 AM
(This post was last modified: 01142016 12:21 AM by matthiaspaul.)
Post: #69




RE: WP32S in 2016?
(01082016 09:09 PM)Dieter Wrote: Finally, there are some not too sophisticated functions that can make the programmer's life much easier as they preserve accuracy that would be lost in a straightforward implementation. Think of a sqrt(1+x) – 1 or a general (1+x)^n – 1 function, especially for small x. Or y^x – 1, or 1 – cos x, or Lambert's W + 1. Or a sin(x*pi) function that returns exact results for integer fractions of Pi. Or... you get the idea. There is more than ln(1+x) and e^x–1.Yes, I agree. I always wondered why these two functions
Secant and inverse:
http://www.hpmuseum.org/forum/thread475...l#pid42413 (01112016 07:34 AM)walter b Wrote: While we're at it, it reminds me of an angular mode I wanted to see implemented in the 43S: multiples of π. We calculate them very precisely anyway, so this mode will come at no extra cost.Yes, factors of pi definitely has utility value as well (some RPL calcs have a >Qπ fraction of pi function in addition to the normal >Q function to convert a number into a fraction), it's quite close to a turns mode. Nevertheless, if I were forced to select only one of these modes, I would choose turns because it appears to be more universal and is already reasonably well established (although not implemented in calculators so far). Having the angle of a full circle normalized to 1 allows for easier conversions to/from a whole bunch of other angle units (including factors of pi, of course). By the way, the above mentioned floatingpoint standards also recommend new variants of trigonometric functions related to factors of pi (@ recommended by IEEE, the others are supported by Oracle).
Matthias  "Programs are poems for computers." 

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