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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: Every D(D) simulated by H presents non-halting behavior to H ###
Date: Mon, 13 May 2024 09:43:09 -0500
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On 5/13/2024 4:14 AM, Mikko wrote:
> On 2024-05-13 04:54:30 +0000, immibis said:
> 
>> On 10/05/24 19:55, Alan Mackenzie wrote:
>>> [ Followup-To: set ]
>>>
>>> In comp.theory olcott <polcott333@gmail.com> wrote:
>>>
>>> [ .... ]
>>>
>>> I've tried out your much spammed code on GCC (see below).  It is clear
>>> you have never built or run this code, which ironically can't reach Line
>>> 06.  It can't even reach line 00.
>>>
>>>> Richard tried to get away with D never simulated by H as an example
>>>> of D simulated by H:
>>>
>>>> Message-ID: <v0ummt$2qov3$2@i2pn2.org>
>>>> On 5/1/2024 7:28 PM, Richard Damon wrote:
>>>
>>>> *That people say they know I am wrong yet will not show the detailed*
>>>> *steps of how I am wrong indicates that they are probably liars*
>>>
>>> You have said, or at least implied that your code fragment is runnable.
>>> I think you are the liar, here.
>>>
>>>> 00 int H(ptr x, ptr x)  // ptr is pointer to int function
>>>> 01 int D(ptr x)
>>>> 02 {
>>>> 03   int Halt_Status = H(x, x);
>>>> 04   if (Halt_Status)
>>>> 05     HERE: goto HERE;
>>>> 06   return Halt_Status;
>>>> 07 }
>>>> 08
>>>> 09 int main()
>>>> 10 {
>>>> 11   H(D,D);
>>>> 12 }
>>>
>>>
>>> .  These are the diagnostics generated by GCC:
>>>
>> And the halting problem is about Turing machines, anyway.
> 
> Not necessarily. The same question can be asked about different machines.
> The restriction to Turing machines is just one way to ensure that the
> problem is well defined.
> 

Well put. All computable functions even if written in C.

-- 
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer