__builtin_cpow((0,0),(0,0))

[Florian Weimer]

* Robert Dewar:

> Marcin Dalecki wrote:
>
>> There is no reason here and you presented no reasoning. But still
>> there is a
>> *convenient* extension of the definition domain for the power of
>> function for the
>> zero exponent.
>
> The trouble is that there are *two* possible convenient extensions.

>From a mathematical point of view, 0^0 = 1 is the more convenient one
in most contexts.  Otherwise, you suddenly lack a compact notation of
polynomials (and power series).  However, this definition is only used
in a context were the exponent is an integer, so it's not really
relevant to the current discussion.