[Octave-bug-tracker] [bug #44071] ismember fails with unsorted complex set

[Carlo de Falco]

Follow-up Comment #2, bug #44071 (project octave):

the values stored in the attached file
are complex.


>> load ismember_bug.mat 
>> whos
Variables in the current scope:

   Attr Name        Size                     Bytes  Class
   ==== ====        ====                     =====  ===== 
        A           1x1                          8  double
        ii          1x1                          8  double
   c    s         299x1                       4784  double

Total is 301 elements using 4800 bytes

>> 


If using only the real part of 's' ismember works as you 
would expect:


>> disp(ismember(A, real (s)));
1


Checking for a complex zero, i.e. 0+i0 also works:


>> disp(ismember(complex(0,0), real (s)));
 1


I don't know whether it would be correct 
for ismember to report true when looking for 
a zero of type double in an array of type
complex.

Does anyone know what Matlab does in this case?




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