// 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 {
			t.Errorf("%s(%d) = %d, want %d\n", test.fnname, test.in, got, test.want)
		}
	}
	for _, test := range tests_uint64mul {
		if got := test.fn(test.in); got != test.want {