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[Bug middle-end/57974] std::pow(std::complex<long double>(0),1) returns (-nan,-nan)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57974

--- Comment #16 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Also, in practice, I think it's *very* hard to explain to the users why long
double is so special, why the middle-end can't handle it in complete analogy
with float and double. And since clang and icc are *already* doing it,
apparently, you can't just tell them, vaguely, "it's very tough to implement"
or "performance would be horrible" or something similar.


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