var x38 uint64
	var x39 uint64
	x39, x38 = bits.Mul64(x32, 0xffffffff00000001)
	var x40 uint64
	var x41 uint64
	x41, x40 = bits.Mul64(x32, 0xffffffff)
	var x42 uint64
	var x43 uint64
	x43, x42 = bits.Mul64(x32, 0xffffffffffffffff)
	var x44 uint64
	var x45 uint64
	x44, x45 = bits.Add64(x43, x40, uint64(0x0))
	var x47 uint64
	_, x47 = bits.Add64(x32, x42, uint64(0x0))
	var x48 uint64

	x33 := (uint8(x2) & 0xff)
	x34 := (x2 >> 8)
	x35 := (uint8(x34) & 0xff)
	x36 := (x34 >> 8)
	x37 := (uint8(x36) & 0xff)
	x38 := (x36 >> 8)
	x39 := (uint8(x38) & 0xff)
	x40 := (x38 >> 8)
	x41 := (uint8(x40) & 0xff)
	x42 := (x40 >> 8)
	x43 := (uint8(x42) & 0xff)
	x44 := (x42 >> 8)
	x45 := (uint8(x44) & 0xff)
	x46 := uint8((x44 >> 8))
	x47 := (uint8(x1) & 0xff)
	x48 := (x1 >> 8)

	var x37 uint64
	var x38 uint64
	x37, x38 = bits.Add64(x15, x28, uint64(p224Uint1(x36)))
	var x39 uint64
	var x40 uint64
	x39, x40 = bits.Add64(x17, x30, uint64(p224Uint1(x38)))
	var x41 uint64
	var x42 uint64
	x41, x42 = bits.Add64(x19, x32, uint64(p224Uint1(x40)))
	var x43 uint64
	var x44 uint64
	x44, x43 = bits.Mul64(x1, arg2[3])
	var x45 uint64
	var x46 uint64

		"\x00\x10\x0b\x0c\x0e\x0c\x0a\x10\x0e\x0d\x0e\x12\x11\x10\x13\x18" +
		"\x28\x1a\x18\x16\x16\x18\x31\x23\x25\x1d\x28\x3a\x33\x3d\x3c\x39" +
		"\x33\x38\x37\x40\x48\x5c\x4e\x40\x44\x57\x45\x37\x38\x50\x6d\x51" +
		"\x57\x5f\x62\x67\x68\x67\x3e\x4d\x71\x79\x70\x64\x78\x5c\x65\x67" +
		"\x63\xff\xc0\x00\x0b\x08\x20\x00\x20\x00\x01\x01\x11\x00\xff\xc4" +

    X23,
    X24,
    X25,
    X26,
    X27,
    X28,
    X29,
    X30,
    X31,
    X32,
    X33,
    X34,
    X35,
    X36,
    X37,
    X38,
    X39,
    X40,
    X41,
    X42,
    X43,
    X44,
    X45,
    X46,
    X47,
    X48,
    X49,
    X50,
    X51,
    X52,
    X53,
    X54,
    X55,
    X56,
    X57,

    X23,
    X24,
    X25,
    X26,
    X27,
    X28,
    X29,
    X30,
    X31,
    X32,
    X33,
    X34,
    X35,
    X36,
    X37,
    X38,
    X39,
    X40,
    X41,
    X42,
    X43,
    X44,
    X45,
    X46,
    X47,
    X48,
    X49,
    X50,
    X51,
    X52,
    X53,
    X54,
    X55,
    X56,
    X57,

const (
	headerStr = "GIF89a" +
		"\x02\x00\x01\x00" + // width=2, height=1
		"\x80\x00\x00" // headerFields=(a color table of 2 pixels), backgroundIndex, aspect
	paletteStr = "\x10\x20\x30\x40\x50\x60" // the color table, also known as a palette
	trailerStr = "\x3b"
)

// lzw.NewReader wants an io.ByteReader, this ensures we're compatible.
var _ io.ByteReader = (*blockReader)(nil)

		in   int64
		want string
		ok   bool
	}{
		// Test base-8 (octal) encoded values.
		{0, "0\x00", true},
		{7, "7\x00", true},
		{8, "\x80\x08", true},
		{077, "77\x00", true},
		{0100, "\x80\x00\x40", true},
		{0, "0000000\x00", true},
		{0123, "0000123\x00", true},
		{07654321, "7654321\x00", true},
		{07777777, "7777777\x00", true},
		{010000000, "\x80\x00\x00\x00\x00\x20\x00\x00", true},