It is an anomaly only if you can produce _. on arguments not containing _. .
>From http://www.jsoftware.com/help/dictionary/d031.htm : ... should be removed from such data as soon as possible. ... Other primitives on arguments containing _. may not produce correct or consistent results. In short, when an argument contains _. , all bets are off. ----- Original Message ----- From: "Mark D. Niemiec" <[EMAIL PROTECTED]> Date: Wednesday, April 9, 2008 17:30 Subject: [Jbeta] Some NaN anomalies in 6.02 To: [email protected] > I noticed the following in J 6.02: > > 0 +. _ NB. Should probably be _ ((0 +. > y) = (|y) for all real y) > |NaN error > | 0 +._ > 0 +. _. NB. Correct > _. > 1 +. _. NB. Oops! > <infinite loop> ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
