[Bug c/115374] fmod() in x86_64 -O3 not using return value from the glibc's implementation if x87 FPU fprem returns NaN

[k3x-devel at outlook dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115374

--- Comment #7 from Mario Hros <k3x-devel at outlook dot com> ---
Created attachment 58373
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58373&action=edit
reporoduction code, compile with -O3 -lm

prints:

is NaN and should not be

errno = 0