Neville Holmes writes: > ... > Nevertheless, it would be good if the J > interpreter would eventually support modern > interval arithmetic. This would certainly be > appreciated in many mathematical circles in > Europe.
To that end, it would be useful to first provide a J model interval arithmetic. For example: An interval is a 2-element list of numbers and: ivplus =: +"1 ivminus =: -"1 ivtimes =: (<./,>./) @ , @ (*/) " 1 ivdivide=: (<./,>./) @ , @ (%/ assert@(0~:])) " 1 assert =: 13!:8 @ ($&12) @ (0 e. ,) etc. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
