Raymond Hettinger added the comment:
> ideally, a floating-point operations works as though the
> corresponding mathematical operation were performed exactly
>on the inputs (considered as real numbers), followed by a rounding
> step that takes the resulting real number and rounds it to the
> nearest floating-point number.
FWIW, the Decimal Arithmetic Specification was created around the same
principle. Accordingly, it gets the answer that Mark expected:
>>> from decimal import Decimal
>>> Decimal('-0.5') // Decimal('Inf')
Decimal('-0')
----------
nosy: +rhettinger
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue22198>
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