Fraser Jackson wrote: > John's comment about numerical stability is the wrong way around. sd is > clearly more stable than sd2. > > a =: i:5 > b =: 100000000000000+i:5 > sd a > 3.31662 > sd b > 3.31662 > > sd2 a > 3.31662 > sd2 b > 0j1.13112e6
Fraser: I can't reproduce your result here (your example works correctly), but I am not so sure about my claim anyway, so I'll withdraw it. I hope these 1-liners are what Don wants. Best wishes, John ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
