Igor Schein on Thu, 12 May 2005 01:16:31 +0200


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erfc() behavior change 

Hi,

\\ ver 2.2.9
? for(k=1,10,print(k" "precision(erfc(2^k))" "precision(erfc(-2^k))))
1 38 57
2 38 57
3 38 77
4 115 154
5 462 500
6 1791 1830
7 7128 7166
8 28475 28513
9 113861 113900
10 455407 455446
\\ ver 2.2.10
? for(k=1,10,print(k" "precision(erfc(2^k))" "precision(erfc(-2^k))))
1 38 57
2 38 57
3 38 77
4 38 154
5 38 500
6 38 1830
7 38 7166
8 38 28513
9 38 113900
10 38 455446

?

Thanks

Igor