On Mon, Feb 21, 2022 at 2:23 PM R.E. Boss <r.e.b...@outlook.com> wrote: > round=: [ * [: <. 0.5 + %~
Looking closer at this, this was a bit different from my initial attempt. Also, a version which rounds to the nearest integer is good up through cyclotomic 70. 71 is a prime number, so we should expect (71#1) as the result for 71, but with this version of round we get non-integer values for 71. (And, rounding to the nearest integer gets us zeros for 71.) Still, it's great for values smaller than 71 (though 0.001 round also has non-integer values for 67). The first non-prime value where this approach has problems is 85 (or 91 if we round to the nearest integer). And, it is interesting -- if you don't mind, I'll put a modified version of it up on rosettacode. Thanks, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
