[Bug libstdc++/61761] [C++11] std::proj returns incorrect values

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761

--- Comment #13 from Christophe Lyon <clyon at gcc dot gnu.org> ---
It's still failing on trunk:
https://gcc.gnu.org/ml/gcc-testresults/2019-11/msg00131.html