return a[1]
}

func main() {
	// Test equality.
	if u16 != iu16 {
		panic("u16 != iu16")
	}
	if u16 != ju16 {
		panic("u16 != ju16")
	}
	if u32 != iu32 {
		panic("u32 != iu32")
	}
	if u32 != ju32 {
		panic("u32 != ju32")
	}
	if u64 != iu64 {
		panic("u64 != iu64")
	}
	if u64 != ju64 {
		panic("u64 != ju64")
	}
	if u128 != iu128 {
		panic("u128 != iu128")
	}

	si64, si32, si16, si8 := float32(-1<<63), float32(-1<<31), float32(-1<<15), float32(-1<<7)

	// integer to float
	if float64(u64) != du64 {
		t.Errorf("float64(u64) != du64")
	}
	if float64(u32) != du32 {
		t.Errorf("float64(u32) != du32")
	}
	if float64(u16) != du16 {
		t.Errorf("float64(u16) != du16")
	}
	if float64(u8) != du8 {
		t.Errorf("float64(u8) != du8")
	}
	if float64(i64) != di64 {

		case tu32*100 + ti8:
			u32 = uint32(v); i8 = int8(u32); w = big(i8)
		case tu32*100 + tu8:
			u32 = uint32(v); u8 = uint8(u32); w = big(u8)
		case tu32*100 + ti16:
			u32 = uint32(v); i16 = int16(u32); w = big(i16)
		case tu32*100 + tu16:
			u32 = uint32(v); u16 = uint16(u32); w = big(u16)
		case tu32*100 + ti32:
			u32 = uint32(v); i32 = int32(u32); w = big(i32)
		case tu32*100 + tu32:

	chki8(int8(u16), cu16&0xff)
	chki8(int8(u32), cu32&0xff)
	chki8(int8(u64), cu64&0xff)
	//	chki8(int8(f32), 0)
	//	chki8(int8(f64), 0)

	chki16(int16(i8), ci8&0xffff-1<<16)
	chki16(int16(i16), ci16&0xffff-1<<16)
	chki16(int16(i32), ci32&0xffff-1<<16)
	chki16(int16(i64), ci64&0xffff-1<<16)
	chki16(int16(u8), cu8&0xffff)
	chki16(int16(u16), cu16&0xffff-1<<16)
	chki16(int16(u32), cu32&0xffff)

func (v TU) String() string   { return Sprintf("U: %d", uint(v)) }
func (v TU8) String() string  { return Sprintf("U8: %d", uint8(v)) }
func (v TU16) String() string { return Sprintf("U16: %d", uint16(v)) }
func (v TU32) String() string { return Sprintf("U32: %d", uint32(v)) }
func (v TU64) String() string { return Sprintf("U64: %d", uint64(v)) }
func (v TUI) String() string  { return Sprintf("UI: %d", uintptr(v)) }

}

var (
	i, j, k       int   = 0, 0, 1
	i8, j8, k8    int8  = 0, 0, 1
	i16, j16, k16 int16 = 0, 0, 1
	i32, j32, k32 int32 = 0, 0, 1
	i64, j64, k64 int64 = 0, 0, 1

	bb = []int16{2, 0}

	u, v, w       uint    = 0, 0, 1
	u8, v8, w8    uint8   = 0, 0, 1
	u16, v16, w16 uint16  = 0, 0, 1
	u32, v32, w32 uint32  = 0, 0, 1
	u64, v64, w64 uint64  = 0, 0, 1
	up, vp, wp    uintptr = 0, 0, 1

#define nelem(x) (sizeof(x)/sizeof((x)[0]))

typedef uint32_t u32;

static u32 div(u32 x, u32 y, u32 *rp) {
	int n = 0;
	while((y>>(32-1)) != 1 && y < x) {
		y<<=1;
		n++;
	}
	u32 q = 0;
	for(;; n--, y>>=1, q<<=1) {
		if(x>=y) {
			x -= y;
			q |= 1;
		}
		if(n == 0)
			break;
	}
	if(rp)
		*rp = x;
	return q;
}

u32 tests[] = {
	0,
	1,
	2,
	3,
	4,
	5,
	6,
	7,

	}

	u8 = ia[9].(uint8)
	if u8 != 12 {
		println(5, u8)
		panic("fail")
	}
	u16 = ia[10].(uint16)
	if u16 != 799 {
		println(6, u16)
		panic("fail")
	}
	u32 = ia[11].(uint32)
	if u32 != 4455 {
		println(7, u32)
		panic("fail")
	}
	u64 = ia[12].(uint64)
	if u64 != 765432 {
		println(8, u64)
		panic("fail")
	}

		bw(b, "\n")
	}
}

func u32(i uint32) string {
	return strconv.FormatUint(uint64(i), 10)
}

func dumpInst(b *strings.Builder, i *Inst) {
	switch i.Op {
	case InstAlt:
		bw(b, "alt -> ", u32(i.Out), ", ", u32(i.Arg))
	case InstAltMatch:
		bw(b, "altmatch -> ", u32(i.Out), ", ", u32(i.Arg))
	case InstCapture:
		bw(b, "cap ", u32(i.Arg), " -> ", u32(i.Out))
	case InstEmptyWidth:

	var i int
	for i = 0; i < out; i++ {
		if output32[i] != u32(i+13) {
			bad32("before32", i, length, in, out)
			return
		}
	}
	// copied part
	for ; i < out+n; i++ {
		if output32[i] != u32(i+in-out) {
			bad32("copied32", i, length, in, out)
			return
		}
	}
	// after
	for ; i < len(output32); i++ {
		if output32[i] != u32(i+13) {
			bad32("after32", i, length, in, out)
			return
		}