ISO/IEC 13751:2000 seems to give an implementation lots of flexibility here.
I'm honestly not sure how to interpret this. Section 15.2.2 says: *Informal Description: Numeric output conversion converts numeric values represented **as numbers—numeric quantities whose format is implementation-defined—into the **same numeric quantities represented in decimal notation as lists of characters.* Then: *Note: Any imaginary-part of the numeric input to Numeric-Output-Conversion is simply ignored; **only the real-part of a complex-number is used.* Regards, Elias On 20 May 2014 12:24, Frederick H. Pitts <fred.pi...@comcast.net> wrote: > Juergen, > > Under "Display of Complex Numbers:" on page 13 of the "APL2 > Programming: Language reference", the document says: > > "In J notation, the real or imaginary part is not displayed if it > is > less than the other by more than ⎕PP orders of magnitude (unless ⎕PP is > at its maximum)". > > In SVN 268, neither of the presented examples work. The smaller > magnitude part is not zeroed if its the real part or suppressed if its > the imaginary part. > > In addition, complex numbers entered in polar notation as > described at > the top page 12 do not display correctly per the description on page 13. > 1D90 and 1R1.5707963267948965 should display as 0J1 assuming ⎕PP is less > than maximum. Currently the real part is displayed as some number times > 10 to the -16 power, i.e. zero for all intents and purposes. > > Regards, > > Fred > Retired Chemical Engineer > > >
