Re: D correctly simulated by H proved for THREE YEARS --- rewritten

On 6/15/2024 10:12 AM, Fred. Zwarts wrote:

Op 15.jun.2024 om 16:48 schreef olcott:

On 6/15/2024 9:37 AM, Fred. Zwarts wrote:

>
Is this the new definition of "pathological"?

>
*It is the same thing that I have been saying all along*
>
00   typedef void (*ptr)(); // pointer to void function
01
02   int HH(ptr P, ptr I);
03
04   void DDD(int (*x)())
05   {
06     HH(x, x);
07     return;
08   }
09
10   int main()
11   {
12     HH(DDD,DDD);
13   }
>
Line 12 main()
   invokes HH(DDD,DDD); that simulates DDD()
>
*REPEAT UNTIL outer HH aborts*
   Line 06 simulated DDD()
   invokes simulated HH(DDD,DDD); that simulates DDD()
>
DDD correctly simulated by HH never reaches its own "return"
instruction and halts.

 So, you agree that you are changing definitions.

Not at all. The original definition still applies when it
is made more generic.
01       int D(ptr p)
02       {
03         int Halt_Status = H(p, p);
04         if (Halt_Status)
05           HERE: goto HERE;
06         return Halt_Status;
07       }
D correctly simulated by H has isomorphic behavior to DDD
correctly simulated by HH, both get stuck in recursive
simulation.
--
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer