Function gmp_mpfr_sys::gmp::__gmpn_cnd_sub_n

pub unsafe extern fn __gmpn_cnd_sub_n(arg1: mp_limb_t,
                                      arg2: mp_ptr,
                                      arg3: mp_srcptr,
                                      arg4: mp_srcptr,
                                      arg5: mp_size_t)
                                      -> mp_limb_t