It's a conjunction. It takes an integer LHA and a gerund RHA. The gerund is a list of verbs to compare, the integer becomes the LHA to 6!:2 . It derives an (ambivalent) verb.
When the derived verb is invoked with arguments, its output is an 2 column table of boxes, with one row per name in the gerund. The first box in each row contains the output of the corresponding verb, the second contains the time and space metrics of running the verb on the arguments. Hence, small is a comparison of all the verbs against +:i.5 averaged over 5000 runs, medium is +:i.500 averaged over 500 runs, and large is the metrics of i.+:5000 on a single run (all with a RHA of i.2 2). The verb cmpr_rpt formats those comparisons prettily. I'd send the definitions, but I slapped it together at work, so I don't have it here. If I remember on Monday, I'll it then. -Dan ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
