https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78576
--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- What are the actual high and low doubles in the return from powl? The simplest reason for the reported result here would be that powl returns a result very slightly less than 27 (which is fine; there is no expectation of powl, or any operations for IBM long double, being correctly rounded).
