Ahh for the good ole days ;-) JVERSION Binary: j601binc_linux32 Library: j601libc Help: j601hlpc Engine: j601/2006-11-17/17:05 ^ o.0j1 _1 ^j.1p1 _1 But time marches on and things change ...
JVERSION Installer: j602a_linux32.sh Engine: j602/2008-03-03/16:45 Library: 6.02.023 ^ o. 0j1 _1j1.22461e_16 (^j.1p1) _1j1.22461e_16 JVERSION Engine: j903/j64avx2/darwin Beta-e: commercial/2021-02-16T18:34:19 Library: 9.03.01 Platform: Darwin 64 Installer: J903 install InstallPath: /applications/j903 Contact: www.jsoftware.com ^j.1p1 _1j1.224646799e_16 NB. but even today the formatted result is satisfying. 33j30 ": ^ o. 0j1 _1.000000000000000000000000000000 > On 2021Feb 20, at 11:12, Henry Rich <[email protected]> wrote: > > No, the code is still there, but it doesn't do much - gives a little bit > better precision on large arguments IIRC. > > Henry Rich > > On 2/20/2021 2:10 PM, Roger Hui wrote: >> https://www.jsoftware.com/papers/APLQA.htm#worldmathsday >> >> * ○ 0j1 × 2e9 + a ÷ 2 >> 1 0J1 ¯1 0J¯1 >> 1 0J1 ¯1 0J¯1 >> 1 0J1 ¯1 0J¯1 >> >> (Basically, ^ o. 0j1 * 2e9 + a % 2 where a=: 3 4$i.12) >> >> I thought I did the same in J, predating what's done in Dyalog APL. >> According to https://www.jsoftware.com/help/dictionary/special.htm, there >> is supposed to be special code for ^@o., but apparently it got lost >> somewhere, sometime. >> >> >> >> >> On Sat, Feb 20, 2021 at 9:45 AM Raul Miller <[email protected]> wrote: >> >>> On Sat, Feb 20, 2021 at 12:46 AM María Magdalena Mixuhca >>> <[email protected]> wrote: >>>> I find this lack of beauty surprisingly disturbing: >>>> >>>> (^ j. 1p1) >>>> _1j1.22465e_16 >>> Ok... so... >>> >>> I think what we want here is a handling of >>> exponentials/transcendentals so that necessarily minimal deviations >>> from pi are smoothly handled so that we get zeros when we expect them. >>> >>> A cost, though, of that kind of approach, is that it would lure us >>> into a false sense of security, leaving us even more upset in other >>> circumstances. >>> >>> Still... it's an interesting challenge. >>> >>> Thanks, >>> >>> -- >>> Raul >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >>> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
