Function gmp_mpfr_sys::mpfr::mpfr_mul_2ui

pub unsafe extern fn mpfr_mul_2ui(rop: *mut __mpfr_struct,
                                  op1: *const __mpfr_struct,
                                  op2: c_ulong,
                                  rnd: mpfr_rnd_t)
                                  -> c_int