[Bug libquadmath/89459] Incorrect rounding for fma in some cases

[andres_takach at mentor dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89459

--- Comment #2 from Andres Takach <andres_takach at mentor dot com> ---
Tried 8.3.0 (took hours to compile!) and it has the same behavior.