Steinar found: > and the following by George Woltman: > > | Now the gotcha. In v22.8, FFT crossovers are flexible. If you test an > | exponent within 0.2% of a crossover point, then 1000 sample iterations > | are performed using the smaller FFT size and the average roundoff > | error calculated. If the average is less than 0.241 for a 256K FFT or > | 0.243 for a 4M FFT, then the smaller FFT size is used.
Could someone (Brian?:))) sketch a histogram showing how the rounding errors from -0.5 to +0.5 are dstributed in the above case please. I am bemused ATM. There seems to be something spooky about these things. At least the "0.2%" is "evidence" for the sharpness of the crossover point, Steinar. David _________________________________________________________________ Be one of the first to try Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d _______________________________________________ Prime mailing list [email protected] http://hogranch.com/mailman/listinfo/prime
