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Python to RPN converter
06-25-2018, 07:13 AM
Post: #35
RE: Python to RPN converter
Hi all,

Reading this thread reactivated an idea I had but never had the courage to implement: build the algebraic equation parser and solver from the HP-27S into the 42S.

Since Thomas won't build this kind of far-off feature in free42, the only way to do it... is FOCAL. While in theory FOCAL is Turing-complete and should be able to implement anything, especially with the virtually unlimited speed and memory of Free42, in practice this is pretty heavy stuff. I thought of using matrices as nodes to build trees, using their variable names as pointers, but you need a strong stomach...

Then I saw this Python to RPN thing and thought "wow ! In Python this is almost trivial to do !". Then I read the converter documentation and my enthousiasm scaled down... It seems that the converter still relied on the 4-level stack to evaluate expressions, without using registers to store temporary computations, and that therefore too complex algebraic computations are doomed to failure. And since I want to do recursive tree evaluation...

I don't want to start this if this has no chance of success. What do you think ?

Thanks in advance and cheers,

Vincent
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Messages In This Thread
Python to RPN converter - tcab - 02-16-2018, 05:27 AM
RE: Python to RPN converter - pier4r - 02-16-2018, 06:26 AM
RE: Python to RPN converter - salvomic - 02-16-2018, 09:47 AM
RE: Python to RPN converter - rprosperi - 02-16-2018, 02:34 PM
RE: Python to RPN converter - charger73 - 02-16-2018, 02:38 PM
RE: Python to RPN converter - Nigel (UK) - 02-16-2018, 03:04 PM
RE: Python to RPN converter - tcab - 02-16-2018, 11:06 PM
RE: Python to RPN converter - compsystems - 02-17-2018, 01:06 AM
RE: Python to RPN converter - StephenG1CMZ - 02-18-2018, 09:21 AM
RE: Python to RPN converter - tcab - 02-18-2018, 10:27 AM
RE: Python to RPN converter - StephenG1CMZ - 02-18-2018, 02:32 PM
RE: Python to RPN converter - tcab - 02-18-2018, 09:25 PM
RE: Python to RPN converter - Thomas Okken - 02-18-2018, 12:59 PM
RE: Python to RPN converter - tcab - 02-18-2018, 01:13 PM
RE: Python to RPN converter - StephenG1CMZ - 02-19-2018, 07:16 AM
RE: Python to RPN converter - tcab - 02-19-2018, 07:29 AM
RE: Python to RPN converter - StephenG1CMZ - 02-19-2018, 07:48 AM
RE: Python to RPN converter - tcab - 02-19-2018, 08:17 AM
RE: Python to RPN converter - pier4r - 02-19-2018, 11:15 AM
RE: Python to RPN converter - StephenG1CMZ - 02-19-2018, 07:36 PM
RE: Python to RPN converter - StephenG1CMZ - 02-20-2018, 02:28 PM
RE: Python to RPN converter - tcab - 02-20-2018, 10:39 PM
RE: Python to RPN converter - MikeOShea - 06-01-2018, 01:39 AM
RE: Python to RPN converter - Thomas Klemm - 06-23-2018, 10:33 PM
RE: Python to RPN converter - tcab - 06-24-2018, 10:56 PM
RE: Python to RPN converter - Thomas Klemm - 06-25-2018, 05:00 PM
RE: Python to RPN converter - Vincent Weber - 06-25-2018 07:13 AM
RE: Python to RPN converter - Thomas Klemm - 06-28-2018, 04:07 PM
RE: Python to RPN converter - Thomas Klemm - 06-28-2018, 08:04 PM
RE: Python to RPN converter - tcab - 11-02-2018, 04:43 AM
RE: Python to RPN converter - Namir - 11-03-2018, 07:32 PM
RE: Python to RPN converter - tcab - 11-04-2018, 06:06 AM
RE: Python to RPN converter - Thomas Okken - 11-04-2018, 02:02 PM
RE: Python to RPN converter - tcab - 11-04-2018, 10:25 PM
RE: Python to RPN converter - Namir - 11-04-2018, 08:07 PM
RE: Python to RPN converter - tcab - 11-04-2018, 09:59 PM
RE: Python to RPN converter - cdmackay - 12-11-2018, 07:05 PM
RE: Python to RPN converter - tcab - 12-11-2018, 10:46 PM
RE: Python to RPN converter - cdmackay - 12-11-2018, 11:27 PM
RE: Python to RPN converter - compsystems - 06-09-2020, 04:12 PM
RE: Python to RPN converter - tcab - 06-12-2021, 03:42 AM
RE: Python to RPN converter - tcab - 06-12-2021, 03:54 AM



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