id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2671,Calculation overflow for the 4th moment,m.de.wever@…,Eric Niebler,"While testing the accumulator library the calculation of the kurtosis goes wrong with a larger dataset. I traced to problem down to the calculation of the 4th moment which seems to overflow. The attached program produces the following output on a 32 bit machine.
{{{
2.44141e+08
2.48094e+08
2.52111e+08
2.56192e+08
2.60338e+08
2.6455e+08
2.68829e+08
2.73175e+08
2.77589e+08
2.82072e+08
2.86624e+08
2.91247e+08
2.95942e+08
3.00708e+08
1.92167e+07
4.20257e+07
6.28038e+07
8.19029e+07
9.96007e+07
1.1612e+08
1.3164e+08
1.4631e+08
1.60251e+08
1.73565e+08
1.45388e+07
}}}

PS I didn't test whether the 3th moment also can overflow, but I had no problem with the calculation of the skewness.
",Bugs,closed,Boost 1.38.0,accumulator,Boost 1.37.0,Showstopper,wontfix,,