Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Richard Heathfield Newsgroups: comp.theory Subject: Re: Every sufficiently competent C programmer knows --- Very Stupid Mistake and Liars Date: Wed, 12 Mar 2025 03:44:03 +0000 Organization: Fix this later Lines: 66 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Wed, 12 Mar 2025 04:44:04 +0100 (CET) Injection-Info: dont-email.me; posting-host="1e46a42d02300691bd0ac693a83620d5"; logging-data="2560376"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+lK4CymSeYfAX98rjXS1RR8pndkN///X1sRC0Qt+YKxg==" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:xpwcN7KEnjfzEqtpk3lPaXwmWVQ= In-Reply-To: Content-Language: en-GB Bytes: 3575 On 12/03/2025 02:33, olcott wrote: > On 3/11/2025 9:29 PM, Richard Heathfield wrote: >> On 12/03/2025 02:06, olcott wrote: >>> On 3/11/2025 9:02 PM, dbush wrote: >>>> On 3/11/2025 9:41 PM, Richard Heathfield wrote: >>>>> On 12/03/2025 01:22, olcott wrote: >>>>>> DDD correctly simulated by HHH never reaches its >>>>>> own "return" instruction and terminates normally >>>>>> in any finite or infinite number of correctly >>>>>> simulated steps. >>>>> >>>>> If it correctly simulates infinitely many steps, it doesn't >>>>> terminate. Look up "infinite". >>>>> >>>>> But your task is to decide for /any/ program, not just DDD. >>>>> That, as you are so fond of saying, is 'stipulated', and you >>>>> can't get out of it. The whole point of the >>>>> Entscheidungsproblem is its universality. Ignore that, and >>>>> you have nothing. >>>>> >>>> >>>> >>>> Given that his code has HHH(DD) returning 0, >>> >>> THESE ARE THE WORDS ANYONE THAT DODGES THESE >>> WORDS WILL BE TAKEN FOR A LIAR >> >> >> "THESE ARE THE WORDS ANYONE THAT DODGES THESE WORDS WILL BE >> TAKEN FOR A LIAR"? >> >> Is that all you've got? Nothing on your function's inability to >> correctly decide on whether arbitrary input programs terminate, >> which is a ***stipulated*** requirement for the problem. >> >> Without that, all you have is loud. >> >>> void DDD() >>> { >>>    HHH(DDD); >>>    return; >>> } >>> >>> DDD correctly simulated by HHH never reaches its >>> own "return" instruction and terminates normally >>> in any finite or infinite number of correctly >>> simulated steps. >> >> Look up "infinite". You keep using that word. I do not think it >> means what you think it means. >> > > DDD correctly simulated by HHH cannot > possibly f-cking halt no f-cking matter what. And anyone other than you should care... because? The question you continually fail to address is what HHH() does with arbitrary input programs. -- Richard Heathfield Email: rjh at cpax dot org dot uk "Usenet is a strange place" - dmr 29 July 1999 Sig line 4 vacant - apply within