[issue32171] Inconsistent results for fractional power of -infinity

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

See also this posting [1], where the omission is discussed, and Vincent Lefevre suggests that the behaviour should be:

> pow (±inf, y) is +inf with no exception
    for finite y > 0 and not an odd integer

[1] http://grouper.ieee.org/groups/754/email/msg03969.html

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<https://bugs.python.org/issue32171>
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