Sorry if that came through as a request for addition of extended complex numbers. I was just pointing out that they weren't there. (maybe not very well though?) They are definitely not worth the time or effort.
Louis > On 10 Sep 2017, at 03:28, HenryRich <henryhr...@gmail.com> wrote: > > We could get a few more bits if we needed them. But supporting a new > datatype like this would take many months of work, for minimal value. > > Henry Rich > >> On 9/9/2017 9:10 PM, bill lam wrote: >> Each j datatype is assigned a number of value 2^n and it is already almost >> used up (only 32-bit range is used to stay compatible with J32). The latest >> addition is literal4 in j805. IMO extended complex or extended complex >> rational are unlikely to be a candidate to use the nearly used up resource. >> >> On Sep 10, 2017 8:02 AM, "Louis de Forcrand" <ol...@bluewin.ch> wrote: >> >> I don't know; I hardly ever use extended precision or rationals myself >> either. I guess it would make the language more "complete". >> Definitely not a priority. >> >> Louis >> >>> On 9 Sep 2017, at 11:34, Raul Miller <rauldmil...@gmail.com> wrote: >>> >>> What would it be used for? (Related: how would the exponential aspects >>> of complex number operations get handled?) >>> >>> Thanks, >>> >>> -- >>> Raul >>> >>> >>>> On Sat, Sep 9, 2017 at 4:57 AM, Louis de Forcrand <ol...@bluewin.ch> >> wrote: >>>> There is no extended complex datatype in J (although its addition could >> be a thought). >>>> Louis >>>> >>>>> On 9 Sep 2017, at 09:23, 'Bo Jacoby' via Programming < >> programm...@jsoftware.com> wrote: >>>>> >>>>> %2 NB. floating >>>>> 0.5 >>>>> x: %2 NB. extended >>>>> 1r2 >>>>> %1j1 NB. floating >>>>> 0.5j_0.5 >>>>> x: %1j1 NB. why not extended? >>>>> |domain error >>>>> | x:%1j1 >>>>> >>>>> >>>>> >>>>> Den 3:53 lørdag den 9. september 2017 skrev Don Kelly <d...@shaw.ca>: >>>>> >>>>> >>>>> It appears that the verb ^ may be a large part of the problem (as in >>>>> 14^2). Check NuVoc /vocabulary/Numeric Precision and go the table for >>>>> different verbs . This and the division may be floating point in this >> case >>>>> _____________________________ >>>>> >>>>> ^ ^. -: % %. inexact (complex if needed), >>>>> >>>>> preserves extended and rational >>>>> if result is exact >>>>> >>>>> _________________________ >>>>> >>>>> Don Kelly >>>>> >>>>>> On 2017-09-08 1:36 AM, Raul Miller wrote: >>>>>> No: integers do not automatically get converted to extended precision. >>>>>> >>>>>> Integers simply have sufficient precision for this example. >>>>>> >>>>>> Thanks, >>>>>> >>>>> ---------------------------------------------------------------------- >>>>> 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 >>> ---------------------------------------------------------------------- >>> 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 > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
