[RFC] What to do for complex::pow(0, 0)

[Gabriel Dos Reis]

Paolo Carlini <pcarlini@suse.de> writes:

| Mark Mitchell wrote:
| 
| > FWIW, my preference would be to match cpow, in the absence of clear
| > guidance from the ISO C++ committee.  I think consistency between
| > the C and C++ runtimes is desirable, unless explicitly disallowed.
| 
| Indeed. Now, for c99 target we are actually calling __builtin_cpow
| (was not the case one week ago due to a trivial oversight) and
| consistency with cpow is basically automatic. In case of non-c99
| platforms (thus missing, in general, cpow) we open code the
| complex::pow code (and return consistently (0, 0) for
| zero^zero). Seems a satisfactory solution.

I do not understand.  Please could you elaborate?

-- Gaby