Gilles, In Nuvoc the extended constant notation can be found here https://code.jsoftware.com/wiki/Vocabulary/Constants#Extended_Integers
Having said that, it is hidden pretty well and most of its references are previous documentation on the jsoftware site. There is certainly work to be done on the wiki! Cheers, bob > On Apr 21, 2022, at 11:44, Gilles Kirouac <g1...@myriade.ca> wrote: > > Ed > > You seem unaware of the extended precision constant notation: > > "digits with a trailing x denote an extended precision integer" > > https://www.jsoftware.com/help/dictionary/dcons.htm > [Where is the equivalent in NuVoc?] > > I would rather write > > 1x + *: 999999999x > 999999998000000002 > > ~ Gilles > > Le 2022-04-21 à 12:51, Henry Rich a écrit : >> 3!:0 %: x: 1 + x: *: x: 999999999 >> 8 >> The square root cannot be represented exactly. >> Henry Rich >> On 4/21/2022 12:43 PM, Ed Gottsman 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
