PEP 238 (revised)

[Andrei Kulakov]

On Thu, 26 Jul 2001 22:09:06 GMT, Guido van Rossum <guido at python.org> wrote:
> 
>     The correct work-around is subtle: casting an argument to float()
>     is wrong if it could be a complex number; adding 0.0 to an
>     argument doesn't preserve the sign of the argument if it was minus
>     zero.  

When is 0 different from -0?

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