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From: vallor <vallor@cultnix.org>
Newsgroups: comp.os.linux.advocacy
Subject: Re: C Non-Programming Non-Challenge
Date: 17 Jun 2024 01:47:37 GMT
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> vallor wrote:
>>> On 6/16/2024 4:19 AM, vallor wrote:
>>>>> On Jun 15, 2024 at 3:20:19 PM EDT, "Farley Flud" <ff@linux.rocks>
>>>>> wrote:
>>>>>
>>>>>> On Sat, 15 Jun 2024 14:29:04 +0000, Farley Flud wrote:
>>>>>>
>>>>>>
>>>>>>> Write a C program to compute the subfactorial of an integer N.
>>>>>>>
>>>>>>>
>>>>>> Nobody got it (as predicted).
>>>>>
>>>>> Because no one bothered.
>>>>
>>>> I actually took the opportunity to install the GMP documentation on my
>>>> system, look up what a "subfactorial" is, and do an implementation that
>>>> works for !N where N is 0 through 50.
>>>
>>> Where's your code?
>> 
>> https://github.com/vallor/subfactorial/
>> 
>> $ ./try_mpz
>> 0:1
>> 1:0
>> 2:1
>> 3:2
>> 4:9
>> 5:44
>> 6:265
>> 7:1,854
>> [...]
>> 48:4,566,824,330,931,624,695,767,452,273,778,667,071,025,042,534,230,906,772,538,913
>> 49:223,774,392,215,649,610,092,605,161,415,154,686,480,227,084,177,314,431,854,406,736
>> 50:11,188,719,610,782,480,504,630,258,070,757,734,324,011,354,208,865,721,592,720,336,801
>> 
>> (I wrote a function to format the numbers.)
>> 
> this is not advocacy , you're off topic

Au contraire, Monseur -- showing off the capabilities of
the GNU Multi-precision library highlights the easy of
numeric computation on LINUX.

And my quick-and-dirty formatter fills in a deficiency
in gmp_printf() -- it doesn't grok "'" for a format
specifier for mpz entities.

Show your mom! 🖖️👽️

-- 
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