[Bug libgcc/78576] [PPC] wrong long double to long int conversion

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78576

--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
At the time, Breno reported 0x403b0000 00000000 as the high half, which is
accurate.  Looking back, I didn't get a report of the low half.  If somehow
that were produced as a negative number, that would also account for the
problem.  That would seem pretty weird, but we can't discount it.