On Oct 22, 2007, at 12:19 AM, Tom Loredo wrote: > I.e, there is a sliver of arguments near 1.0 where ndtr (or perhaps > erf or erfc, which it relies on) misbehaves (giving nan), but only > on PPC. > > Anyone else see this on PPC? Yes, we have trouble with erf on PPC Mac's, too.