dly wrote: > my e-mail examples passed John's earlier reply like a ship in the night > > Some things I will understand once I try them out > > As I mention, I know i can apply my own rules, if in fact there are > no existing primitives to format, any way i like > > I know I have to figure out if my own algorithms produce accurate > results > > my only questions asked and unanswered (but could be quicker to look > up since I discovered J for APL programmers) > is to display the equivalent of []CT (comparison tolerance) >
9!:18 > and > > how would i know, short of acquiring a I/O logical analyzer how many > digits are significant in a function i cannot examine? > As I mentioned in an early post, you can assume that J library functions return correct values. As soon as you manipulate them in any way, it is your algorithm. My prior example showed how even + can be ill-behaved. An I/O logical analyzer is not going to help: it's a numerical analysis question. Best wishes, John ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
