Function _arb_poly_div_root 

pub unsafe extern "C" fn _arb_poly_div_root(
    Q: arb_ptr,
    R: *mut arb_struct,
    A: arb_srcptr,
    len: mp_limb_signed_t,
    c: *const arb_struct,
    prec: mp_limb_signed_t,
)