You are talking about tolerance and comparison on intervals as if they were two diffent things. What is your definition of comparison on intervals?
--- Henry Rich <[EMAIL PROTECTED]> wrote: > > However, for some mystical reasons J implementation > > does not allow the tolerance (factor of the radius) > > to grow above 2^_34, thus, as pointed out by Roger Hui > > http://www.jsoftware.com/jwiki/Essays/Tolerant_Comparison > > ... This is also why it's hard to grasp > > this limitation concept. > > It is my understanding that tolerant comparison is intended > not to solve any application problem, but just to hide the > numerical inaccuracies that result from floating-point > arithmetic. For such a use, relative tolerance is > the right approach, and 2^_34 is plenty big. > > If your application needs comparison on intervals, you > are expected to code it yourself. Tolerance larger than > 2^_34 hurts integer code & so is not available as a way > to handle interval comparisons. > > Henry Rich __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
