bpo-41205: Document Decimal power 0 to the 0 (GH-21386)

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
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Srinivas Reddy Thatiparthy (శ్రీనివాస్ రెడ్డి తాటిపర్తి) 2020-07-19 16:33:43 +05:30 committed by GitHub
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@ -1357,6 +1357,9 @@ In addition to the three supplied contexts, new contexts can be created with the
The rounding mode of the context is used. Results are always correctly-rounded The rounding mode of the context is used. Results are always correctly-rounded
in the Python version. in the Python version.
``Decimal(0) ** Decimal(0)`` results in ``InvalidOperation``, and if ``InvalidOperation``
is not trapped, then results in ``Decimal('NaN')``.
.. versionchanged:: 3.3 .. versionchanged:: 3.3
The C module computes :meth:`power` in terms of the correctly-rounded The C module computes :meth:`power` in terms of the correctly-rounded
:meth:`exp` and :meth:`ln` functions. The result is well-defined but :meth:`exp` and :meth:`ln` functions. The result is well-defined but