[Octave-bug-tracker] [bug #54622] test importdata fails in dev octave with windows

[Dan Sebald]

Follow-up Comment #58, bug #54622 (project octave):

OK, I see the reasoning behind the "NaN + Infj", I guess.  It is being thought
of as


(Inf,0) * (0,j) = Inf*0 + Inf*j + 0*0 - 0*1
                = NaN + Infj + 0 - 0
                = NaN + Infj


Not sure I completely agree with that, but that's fine.  I mean, we could make
the argument that


-1 * Inf = (-1,0) * (Inf,0)
         = -1*Inf + -1*0 j + Inf*0 j - 0*0
         = -Inf + NaN j


whatever.

However, I then tried some things.  The attached change to importdata.m BIST
works.  On the other hand, reading "NaN+Infj" doesn't seem to work.  I changed
Rik's example file to be:


1.5,NaN+Infj,4


and I see that the NaN+Infj is not recognized


octave:1> dlmread ('tst_nan_infj.txt', ',')
ans =

   1.50000   0.00000   4.00000

octave:2> importdata ('tst_nan_infj.txt', ',')
ans =

  scalar structure containing the fields:

    data =

       1.5000       NA   4.0000

    textdata =
    {
      [1,1] = NaN+Infj
    }



Do we need to further enhance the if-else block in dlmread.cc?

(file #44984)
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Additional Item Attachment:

File name: octave-importdata_bist_infj-djs2018sep11.patch Size:0 KB


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