[Octave-bug-tracker] [bug #59890] inf+1i*inf gives nan+1i*inf

[John W. Eaton]

Follow-up Comment #1, bug #59890 (project octave):

Are you expecting NaN+NaNi?

There is no pure imaginary type and we just use C++ complex arithmetic
operations.  So you are seeing


Inf + (0,1)*Inf  =>
Inf + (NaN,Inf)  =>
(NaN,Inf)


Isn't that what C++ <complex> always does or is that behavior unspecified by
the standard?

Even if we fixed this for Octave (by introducing special cases or our own
special complex class, it would not fix it for external libraries that perform
complex arithmetic.


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