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

[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.

However, the one chosen by the C standard has indeed become pretty
prevalent (the Ada RM for instance specifies that 0**0 = 1 (applies
to complex case as well).