Square root does not produce an extended precision result. <.@%: does produce an extended precision result, but that would not resolve your problem here.
FYI, -- Raul On Thu, Apr 21, 2022 at 12:43 PM Ed Gottsman <edward.j.gotts...@gmail.com> wrote: > > Hello. > > I’m working on the Project Euler “Diophantine equation” problem (#66) and > using J’s extended precision facilities. I’ve run into behavior that > confuses me. Boiled down (and overusing x: just to be sure): > > x: %: x: 1 + x: *: x: 999999999 > 999999999 > > That is (if my syntax is right), the square root of (one plus the square of a > really large n) is n. I’m apparently misunderstanding something about > extended precision. I’ve tried it with a variety of uses of x: but to no > avail, and as I read the x: documentation…this is an odd result. > > Any help would be much appreciated. > > (J901 on iPadOS, for which sincere kudos to Ian Clark.) > > Many thanks. > > Ed > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
