Re: NaN error

[Francesco Potortì]

>I came across the 196 algorithm at:
>http://mathworld.wolfram.com/196-Algorithm.html
>
>I decided to code a version of it, and it works... until I increase the
>iterations past a limit. I think the error is in the memory, but I'm
>just not sure where the error is.
>
>function [ a ] = rev (a,iter)
>
>
>for k=1:iter
>
>a=num2str(a);
>b=[];
>
>for i=length(a):-1:1
>j=length(a)-i+1;
>b(j)=a(i);
>endfor
>
>b=str2double(b);
>a=str2double(a);
>
>a=b+a;
>
>endfor
>endfunction
>
>The results I get are:
>octave-3.2.3> rev(123,1)
>ans =  444
>octave-3.2.3> rev(123,10)
>ans =  1354353
>octave-3.2.3> rev(123,11)
>ans = NaN

octave> num2str(1354353)
ans = 1.35435e+06

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