I noticed that v22.2 and v22.3 automatically do roundoff checking every iteration for any exponent close enough to the FFT limit. Is there any reason to be concerned about the possibility of roundoff error for CPUs that aren't P4s? What about if the non-P4s are only doing double checks? ( Since numbers of double checking size have been checked by non-P4s for years without any problems that I've heard about. ) Very specifically, I'm wondering if I should be ok if I use the "undocumented" setting in prime.ini to turn off roundoff checking every iteration for when my Pentium 200 MHz double checks 6502049 ( the next FFT size is at 6520000 ). Thanks.
Nick Glover [EMAIL PROTECTED] Computer Science, Clemson University "It's good to be open-minded, but not so open that your brains fall out." - Jacob Needleman _________________________________________________________________________ Unsubscribe & list info -- http://www.ndatech.com/mersenne/signup.htm Mersenne Prime FAQ -- http://www.tasam.com/~lrwiman/FAQ-mers
