Little explorations with HP calculators (no Prime)

03222017, 03:27 PM
(This post was last modified: 03222017 03:35 PM by Joe Horn.)
Post: #12




RE: Little explorations with the HP calculators
(03222017 08:37 AM)pier4r Wrote: @Joe Horn The AUR says that, but it's wrong. Try it with flag 3 clear. It works, and returns exact values. (03222017 08:37 AM)pier4r Wrote: I have flags 1, 3 set (the ones related to computations, I have others set but they are for something else) and exact mode (flag 105 not set). With those, I can produce a long integer but not using the sum function. Maybe is the funtion itself producing floats? As I wrote above, it returns exact values when fed exact inputs and executed in exact mode with flag 3 clear. If that doesn't work for you, perhaps you have an obsolete firmware version? The most recent VERSION is 2.15. Or maybe you have some other conflicting flag(s)? EDIT: The ROM version can't be the problem, because I just tried it on an ancient 49G (version 1.196) and it works ok there too. (03222017 12:14 PM)John Keith Wrote: The Sigma (sum) function works with real and complex numbers but not with exact integers. Thus it will always give a real result if given exact integers. Not true, at least in VERSION 2.15. This is interesting... I gotta know why some 50g's can't return exact values for the Sigma function. "Yes, it's puzzling. I don't think I've ever seen anything quite like this before."  HAL 9000 X<> c Joe 

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