[Bug c/92164] Wrong result using builtin rint/rintf optimization in x86_64

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92164

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that if GCC would be standards-conforming here your program would still
need

#pragma STDC FENV_ACCESS ON

since you are accessing and modifying the floating-point state (where the
pragma has no effect for GCC)