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Re: ackermann number [message #77425]

Wed, 31 August 2011 02:44

rogass
Messages: 200
Registered: April 2008

Senior Member

On 31 Aug., 10:39, chris <rog...@googlemail.com> wrote:
> Hi folks,
> I try to compute the ackermann number, but unfortunately my code is
> omehow erroneous. Additonally, I need it in hexadecimal form in a text
> file. Some ideas how to solve this problem?
>
> Thanks and best regards
>
> CR
>
> function ack,m,n
>
> while (1) do begin
> switch m of
> 0 : return, n+1u
> 1 : return, n+2u
> 2 : return, ishft(n,1u)+3u
> 3 : return, ishft(1u,n+3)-3u
> else: begin
> if n eq 0 then begin
> n = 0u
> endif else begin
> n = ack4(m,n-1u)
> endelse
> m--
> break
> end
> endswitch
> endwhile
> end

A little typo:

n = ack(m,n-1u)

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Re: ackermann number

By: rogass on Wed, 31 August 2011 02:44

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