(11C) CUBIC EQUATION
06-11-2018, 07:04 AM (This post was last modified: 06-11-2018 07:06 AM by Dieter.)
Post: #17
 Dieter Senior Member Posts: 2,397 Joined: Dec 2013
RE: (11C) CUBIC EQUATION
(06-11-2018 02:16 AM)Gamo Wrote:  Thank You for reviewing this program I noticed that this routine take a long time to run and must be something wrong in the original coding.
...
USER INSTRUCTIONS:
1. Initialize f [REG]

There we are:
This initializes R4 (and all other registers) with zero.
So the suggested CLX STO 4 in my previous post seems to be a good idea.

(06-11-2018 02:16 AM)Gamo Wrote:  2. 10^4 [STO] 0

10^4 ?
Your program stores 10^–4 instead. Which seems to make more sense.

(06-11-2018 02:16 AM)Gamo Wrote:  Program: CUBIC EQUATION
Code:
... LBL 8 RCL 7 RCL 6 x RCL 4 X=Y GTO 7 ...

Here your program differs from the listing:

Code:
RCL 7 RCL 6 x RCL 4   // these three lines +       // are not in the STO 5   // 29C listing RCL 4 X=Y GTO 3

(06-11-2018 02:16 AM)Gamo Wrote:  Under user instruction the first step said Initialize f [REG] is this to make sure that each RUN register R4 is clear and that start R4 with zero ?

Yes, exactly.
That's why you should add a STO 4 after the CLX in the LBL A part.
I did so and it seems to work.

So the issue now seems to be resolved.

Dieter
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 Messages In This Thread (11C) CUBIC EQUATION - Gamo - 06-09-2018, 11:49 AM RE: (11C) CUBIC EQUATION - Gamo - 06-09-2018, 12:34 PM RE: (11C) CUBIC EQUATION - Dieter - 06-09-2018, 12:54 PM RE: (11C) CUBIC EQUATION - rprosperi - 06-09-2018, 01:00 PM RE: (11C) CUBIC EQUATION - Massimo Gnerucci - 06-09-2018, 01:18 PM RE: (11C) CUBIC EQUATION - Dieter - 06-09-2018, 06:05 PM RE: (11C) CUBIC EQUATION - Dieter - 06-09-2018, 07:50 PM RE: (11C) CUBIC EQUATION - Valentin Albillo - 06-09-2018, 10:34 PM RE: (11C) CUBIC EQUATION - Dieter - 06-10-2018, 07:15 AM RE: (11C) CUBIC EQUATION - Valentin Albillo - 06-10-2018, 08:50 PM RE: (11C) CUBIC EQUATION - Dieter - 06-10-2018, 09:17 PM RE: (11C) CUBIC EQUATION - Albert Chan - 07-20-2021, 10:12 PM RE: (11C) CUBIC EQUATION - Gamo - 06-10-2018, 02:42 AM RE: (11C) CUBIC EQUATION - Gamo - 06-10-2018, 02:36 PM RE: (11C) CUBIC EQUATION - Dieter - 06-10-2018, 03:34 PM RE: (11C) CUBIC EQUATION - Dieter - 06-10-2018, 09:35 PM RE: (11C) CUBIC EQUATION - Gamo - 06-11-2018, 02:16 AM RE: (11C) CUBIC EQUATION - Dieter - 06-11-2018 07:04 AM RE: (11C) CUBIC EQUATION - Gamo - 06-11-2018, 08:19 AM RE: (11C) CUBIC EQUATION - Dieter - 06-11-2018, 08:19 PM RE: (11C) CUBIC EQUATION - Gamo - 06-12-2018, 07:02 AM

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