Finally found a use for my WP34s that I can't replicate elsewhere

09222018, 10:02 PM
Post: #1




Finally found a use for my WP34s that I can't replicate elsewhere
I have been struggling with needing to calculate the exponential integral for my work. In order to do this, I need EulerMascheroni's constant in the highest precision possible. I've been trying to write code to do this in C++ and it has been challenging, then I remembered that the WP34s has 34 digit precision.
Not only that but it has the constant already built in, with 34 digits of precision! The only question I have so far is, how do I scroll right in the double precision mode to see the rest of the digits? Thanks 

09222018, 11:05 PM
Post: #2




RE: Finally found a use for my WP34s that I can't replicate elsewhere
fshift and gshift x<>y show the left and right halves of the number including all digits.
Pauli 

09232018, 01:08 AM
Post: #3




RE: Finally found a use for my WP34s that I can't replicate elsewhere
You can use Wolfram Alpha: http://m.wolframalpha.com/input/?i=EulerGamma


09232018, 01:50 AM
(This post was last modified: 09232018 01:54 AM by Joe Horn.)
Post: #4




RE: Finally found a use for my WP34s that I can't replicate elsewhere
IIRC, Free42 also has 34 digits of precision, and pressing the SHOW button displays all the digits at once.
EDIT: And if you have an HP 50g, you can install the LongFloat library and set whatever precision you want, up to 9999 digits. <0ΙΈ0> Joe 

09232018, 04:13 AM
Post: #5




RE: Finally found a use for my WP34s that I can't replicate elsewhere
Out of curiosity is there a way to get 9999 digits of precision in c++ without having to code it yourself?
For now, the WP34s will work because it can do the Ei(x) pretty fast, with accuracy up to about x=30 (more than I should really need, c++ can't even converge at x=1 using Theis (1935)). 

09232018, 04:48 AM
Post: #6




RE: Finally found a use for my WP34s that I can't replicate elsewhere  
09252018, 09:04 PM
Post: #7




RE: Finally found a use for my WP34s that I can't replicate elsewhere  
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