[issue22198] Odd floor-division corner case

[Raymond Hettinger]

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')

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nosy: +rhettinger

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22198>
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