[docs] [issue40269] Inconsistent complex behavior with (-1j)

Serhiy Storchaka storchaka+cpython@gmail.com added the comment:

The Imaginary type could help to solve other "gotchas". For example, in Python

...

...

complex(0, float('inf')) * 1

(nan+infj)

But in C++ you will get the real component 0, because multiplication of complex and real numbers is component wise.

With the Imaginary type we could get that 1j * x == complex(0, x) for all float x, including infinity and NaN.

Returning to the repr, the other way to correctly represent the repr of complex(-0.0, 1.0) is writing it as "-(0.0-1j)", but it looks unnatural to me.

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