func main() {
	w := new(bytes.Buffer)
	fmt.Fprintf(w, "// Code generated by gen/arithBoundaryGen.go. DO NOT EDIT.\n\n")
	fmt.Fprintf(w, "package main;\n")
	fmt.Fprintf(w, "import \"testing\"\n")

	for _, sz := range []int{64, 32, 16, 8} {
		fmt.Fprintf(w, "type utd%d struct {\n", sz)
		fmt.Fprintf(w, "  a,b uint%d\n", sz)
		fmt.Fprintf(w, "  add,sub,mul,div,mod uint%d\n", sz)
		fmt.Fprintf(w, "}\n")

			i++
		}
	}
	return strings.Join(lines[0:i], "\n")
}

func TestPrint(t *testing.T) {
	var buf strings.Builder
	for _, test := range tests {
		buf.Reset()
		if err := Fprint(&buf, nil, test.x, nil); err != nil {
			t.Errorf("Fprint failed: %s", err)
		}
		if s, ts := trim(buf.String()), trim(test.s); s != ts {
			t.Errorf("got:\n%s\nexpected:\n%s\n", s, ts)
		}
	}

	// file set fset.
	funcAST, fset := parseFunc("example_test.go", "printSelf")

	// Print the function body into buffer buf.
	// The file set is provided to the printer so that it knows
	// about the original source formatting and can add additional
	// line breaks where they were present in the source.
	var buf bytes.Buffer
	printer.Fprint(&buf, fset, funcAST.Body)

	// Remove braces {} enclosing the function body, unindent,

	fmt.Fprintf(w, "_MaxSmallSize = %d\n", maxSmallSize)
	fmt.Fprintf(w, "smallSizeDiv = %d\n", smallSizeDiv)
	fmt.Fprintf(w, "smallSizeMax = %d\n", smallSizeMax)
	fmt.Fprintf(w, "largeSizeDiv = %d\n", largeSizeDiv)
	fmt.Fprintf(w, "_NumSizeClasses = %d\n", len(classes))
	fmt.Fprintf(w, "_PageShift = %d\n", pageShift)
	fmt.Fprintf(w, "maxObjsPerSpan = %d\n", maxObjsPerSpan(classes))
	fmt.Fprintln(w, ")")

	declSize int64
)

func testprint(out io.Writer, node ast.Node) {
	if err := (&Config{TabIndent | UseSpaces | normalizeNumbers, 8, 0}).Fprint(out, fset, node); err != nil {
		log.Fatalf("print error: %s", err)
	}
}

// cannot initialize in init because (printer) Fprint launches goroutines.
func initialize() {
	const filename = "testdata/parser.go"

	src, err := os.ReadFile(filename)
	if err != nil {

	// Use a const string to allow the compiler to constant-evaluate lookups at constant index.
	fmt.Fprintf(w, "const %s = \"\"+\n\"", name)
	for i := 0; i < 256; i++ {
		fmt.Fprintf(w, "\\x%02x", f(uint8(i)))
		if i%16 == 15 && i != 255 {
			fmt.Fprint(w, "\"+\n\"")
		}
	}
	fmt.Fprint(w, "\"\n\n")
}

func ntz8(x uint8) (n uint8) {
	for x&1 == 0 && n < 8 {
		x >>= 1
		n++
	}
	return
}

		return
	}
	sep := getMaxWidths(output)
	for _, row := range output {
		for i, col := range row {
			_, _ = fmt.Fprint(c.writer, col.String())
			if i == len(row)-1 {
				_, _ = fmt.Fprint(c.writer, "\n")
			} else {
				padAmount := sep[i] - utf8.RuneCount([]byte(col.Value)) + 2
				_, _ = fmt.Fprint(c.writer, strings.Repeat(" ", padAmount))
			}
		}
	}
}

func max(x, y int) int {
	if x < y {

	}
	var buf strings.Builder
	fmt.Fprint(&buf, "<div class=\"lines\" style=\"width: 8%\">")
	filename := ""
	for _, fl := range all {
		fmt.Fprint(&buf, "<div>&nbsp;</div>")
		if filename != fl.Filename {
			fmt.Fprint(&buf, "<div>&nbsp;</div>")
			filename = fl.Filename
		}
		for i := range fl.Lines {
			ln := int(fl.StartLineno) + i
			fmt.Fprintf(&buf, "<div class=\"l%v line-number\">%v</div>", ln, ln)
		}

	before, err := os.Executable()
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to read executable name before deletion: %v\n", err)
		os.Exit(1)
	}

	err = os.Remove(before)
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to remove executable: %v\n", err)
		os.Exit(1)
	}

	after, err := os.Executable()
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to read executable name after deletion: %v\n", err)

// prints, while Print adds blanks only between non-string arguments and Printf
// does exactly what it is told.
// Sprint, Sprintln, Sprintf, Fprint, Fprintln, and Fprintf behave the same as
// their corresponding Print, Println, and Printf functions shown here.
func Example_printers() {
	a, b := 3.0, 4.0
	h := math.Hypot(a, b)

	// Print inserts blanks between arguments when neither is a string.