panic(err)
							}
						}

					}
				}

			}
		}

		fmt.Fprintf(w, "}\n\n")
	}

	fmt.Fprint(w, `

// TestArithmeticConst tests results for arithmetic operations against constants.
func TestArithmeticConst(t *testing.T) {
`)

	for _, s := range szs {
		fmt.Fprintf(w, `for _, test := range tests_%s%s {`, s.name, s.oponly)

	test_int8{fn: xor_127_int8, fnname: "xor_127_int8", in: 127, want: 0},
	test_int8{fn: xor_int8_127, fnname: "xor_int8_127", in: 127, want: 0}}

// TestArithmeticConst tests results for arithmetic operations against constants.
func TestArithmeticConst(t *testing.T) {
	for _, test := range tests_uint64 {
		if got := test.fn(test.in); got != test.want {