[Numpy-discussion] Assigning complex values to a real array

[Dr. Phillip M. Feldman]

Pauli Virtanen-3 wrote:
> 
> I'd think that downcasting is different from dropping the imaginary part.
> 

There are many ways (in fact, an unlimited number) to downcast from complex
to real.  Here are three possibilities:

- Take the real part.
- Take the magnitude (root-mean-square of the real and imaginary parts).
- Assign a NaN.

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