Round from zero support for non-BigFloats (#41246)
Co-authored-by: Steven G. Johnson <stevenj@alum.mit.edu>
Co-authored-by: Steven G. Johnson <stevenj@mit.edu>
Co-authored-by: Mosè Giordano <giordano@users.noreply.github.com>
Co-authored-by: Dilum Aluthge <dilum@aluthge.com>
