And did you take steps to ensure that round-off
and truncation errors did not get out of hand
in the one-billion-iteration computation?

I note that for

d=: ". (0 : 0) -. CRLF
 0  1 1 2  1 2   1  4  3 13  5
 1  1 8 1  2 4   1  1 40  1 11
 3  7 1 7  1 1   5  1 49  4  1
65  1 4 7 11 1 399  2  1  3  2
 1  2 1 5  3 2   1 10  1  1  1
 1  2 1 1  3 1   4  1  1  2  5
 1  3 6 2  1 2   1  1  1  2  1
 3 16 8 1  1 2  16  6  1  2  2
 1  7 2 1  1 1   3  1  2  1  2
)

  (+%)/ d
0.577216
   0j18 ": (+%)/d
0.577215664901532870

And (+%)/d takes 0.2 milliseconds.



----- Original Message -----
From: DIETER ENSSLEN <[email protected]>
Date: Tuesday, February 2, 2010 11:38
Subject: [Jchat] pocket pc speed doing J: about 12 hrs for 1 billion grouped 
iterations
To: chat forum <[email protected]>

> of the euler-mascheroni constant, yielding
> 
> 0.5772156654014893 , which is getting there, slowly
> 
> very slowly
> 
> kind of satisfying and impressive both for J and the pocket pc
> 
> it will take another 12 odd hours to determine the precise time 
> required
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