Randy MacDonald wrote: > Personally I've never seen significant digit aritmetic (which > is only meaningful for display of numbers) built in to a language.
Where the number of significant digits is some [usually easily determined] constant, facilities such as 9!:11, etc. are sufficient. Of course, that's not really significant digit arithmetic. Where significant digits are not constant, usually it's important to deal with the issue, and most of the techniques (standard deviation/variance, interval arithmetic, checking the results using some form of test, or whatever else) aren't really significant digit arithmetic. ...which might count as an explanation of what you've seen (or not seen). -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
