Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!

09162014, 03:14 PM
Post: #21




RE: Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!
(09162014 12:33 PM)Dieter Wrote:(09162014 01:20 AM)Gerson W. Barbosa Wrote: You can try In order to address the case F=0, which seems to be a consequence of B=0, I had suggested later in the thread the insertion of x=0? x! between ABS and /. Your suggestion is one step shorter and more efficient, so I would go for it. That's what I was able to come up with while watching an interview on TV. When memory is not an issue (sometimes it is on the 32SII), I'll definitely use the SGN subroutine replacement, since no stack analysis is necessary. Regards, Gerson. 

09172014, 01:23 AM
Post: #22




RE: Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!
You don't really need the SIGN function. You can exchange the SQRT with register F and use register arithmetic (lines B12  B17). But then you don't push F onto the stack. That's why we need to recall F later in line E07.
Code: B01 LBL B Currently I have troubles with my HP32II and therefore can't test these changes. But as an inspiration you can have a look at the original code for the HP15C (lines 057061 of program B). HTH Thomas PS: Sorry for being late to the party. 

09232014, 12:15 AM
(This post was last modified: 02172015 08:28 PM by Thomas Klemm.)
Post: #23




RE: Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!
The suggestions in my previous post are flawed. Meanwhile I could fix it. This program works fine with my HP32SII:
Code: H01 LBL H This post made me try to understand the algorithm that is used. I posted my findings in an article. Cheers Thomas 

02172015, 07:36 PM
Post: #24




Cadillac Quadratic Solver for HP 35s
Dear Members, I have a question about Palmer Hanson program for Hp 35s. I don´t know how to insert steps Q038, 040 and 065= SUM  , from the program listing of Cadillac Quadratic Solver.
Can you please assit me about the order of the keys for that instruction Thank you in advance, Pedro 

02172015, 08:26 PM
(This post was last modified: 02172015 08:30 PM by Dieter.)
Post: #25




RE: Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!
(02172015 07:36 PM)PedroLeiva Wrote: Can you please assit me about the order of the keys for that instruction I see this is your first post here, so welcome to the forum. ;) In the listing, "Sum" refers to the greek Sigma, so "Sum–" means Σ– (yellowshifted function of the Σ+ key in the bottom key row). Equally, "Sum xy" means Σxy which is accessed via the SUMS menu (blueshifted Minuskey). Dieter 

02172015, 08:34 PM
Post: #26




RE: Cadillac Quadratic Solver behaving like an Edsel  Problem solved!!
(02172015 08:26 PM)Dieter Wrote:(02172015 07:36 PM)PedroLeiva Wrote: Can you please assit me about the order of the keys for that instruction How I did not realize it! Thank you very much for your assistance. Pedro 

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