Accurate Bernoulli numbers on the 41C, or "how close can you get"?

03202014, 06:46 AM
(This post was last modified: 03202014 12:41 PM by Ángel Martin.)
Post: #21




RE: Accurate Bernoulli numbers on the 41C, or "how close can you get"?
(03192014 08:31 PM)Dieter Wrote: "Fast and accurate" always sounds very promising. ;) Do you have any figures here? How fast is, for instance, qf(0,01) on an actual HP41? On V41 using the default settings: qf(0.01) = 2,326522873, in 1.5 seconds. On a 41CL using TURBO=zero the same calculation takes 2.35 seconds. and just 0.11002 seconds in TURBO50 ( I couldn't resist!) (03192014 08:31 PM)Dieter Wrote: You say you used the inverse error function as implemented in the CUDA library. Do you have a link to this algorithm? I found some information on the library, but not on the actual algorithms. cf. the paper by Mike Giles posted at: http://people.maths.ox.ac.uk/gilesm/file...erfinv.pdf Edited: I checked my files looking for the doubleprecision source code paper. It appears the link has been redirected to another subject, so I cannot find it online. Unfortunately I didn't keep an electronic copy of the document so would need to go to the actual "paper vault" , I hope to find it or else would have to reverseengineer my own MCODE Edited: I found the document  send me your email address if you're interested. 

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