package byteorder

func LeUint16(b []byte) uint16 {
	_ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
	return uint16(b[0]) | uint16(b[1])<<8
}

func LePutUint16(b []byte, v uint16) {
	_ = b[1] // early bounds check to guarantee safety of writes below
	b[0] = byte(v)
	b[1] = byte(v >> 8)
}

func LeAppendUint16(b []byte, v uint16) []byte {
	return append(b,
		byte(v),
		byte(v>>8),
	)

	// Clear old bits.
	*(*uint8)(f) &^= 3 << shift
	// Set new bits.
	*(*uint8)(f) |= uint8(b&3) << shift
}

type bitset16 uint16

func (f *bitset16) set(mask uint16, b bool) {
	if b {
		*(*uint16)(f) |= mask
	} else {
		*(*uint16)(f) &^= mask
	}

	Offset    uint64
	Ino       uint64
	Reclen    uint16
	Namlen    uint16
	Name      [256]uint8
	Pad_cgo_0 [4]byte
}

type RawSockaddrInet4 struct {
	Len    uint8
	Family uint8
	Port   uint16
	Addr   [4]byte /* in_addr */
	Zero   [8]uint8
}

type RawSockaddrInet6 struct {
	Len      uint8
	Family   uint8
	Port     uint16
	Flowinfo uint32
	Addr     [16]byte /* in6_addr */

type FileHeader32 struct {
	Fmagic   uint16 // Target machine
	Fnscns   uint16 // Number of sections
	Ftimedat uint32 // Time and date of file creation
	Fsymptr  uint32 // Byte offset to symbol table start
	Fnsyms   uint32 // Number of entries in symbol table
	Fopthdr  uint16 // Number of bytes in optional header
	Fflags   uint16 // Flags
}

type FileHeader64 struct {
	Fmagic   uint16 // Target machine

		return 1
	}
	return 0
}

func testStoreSize(t *testing.T) {
	a := [4]uint16{11, 22, 33, 44}
	testStoreSize_ssa(&a[0], &a[2], 77)
	want := [4]uint16{77, 22, 33, 44}
	if a != want {
		t.Errorf("testStoreSize failed.  want = %d, got = %d", want, a)
	}
}

//go:noinline
func testStoreSize_ssa(p *uint16, q *uint16, v uint32) {
	// Test to make sure that (Store ptr (Trunc32to16 val) mem)

	Mode uint32
	_    [0]uint8
	Seq  uint16
	_    uint16
	_    uint32
	_    uint32
}
type SysvShmDesc struct {
	Perm       SysvIpcPerm
	Segsz      uint32
	Atime      uint32
	Dtime      uint32
	Ctime      uint32
	Cpid       int32
	Lpid       int32
	Nattch     uint32
	Atime_high uint16
	Dtime_high uint16
	Ctime_high uint16
	_          uint16

//go:noinline
func ofz16r16(n uint16) int16 {
	var x int16
	return x >> n
}

//go:noinline
func ofz16r8(n uint8) int16 {
	var x int16
	return x >> n
}

//go:noinline
func ofz16ur64(n uint64) uint16 {
	var x uint16
	return x >> n
}

//go:noinline
func ofz16ur32(n uint32) uint16 {
	var x uint16
	return x >> n
}

//go:noinline
func ofz16ur16(n uint16) uint16 {
	var x uint16

// the value for b is by r.value + (b - r.lo) * stride.
func (t *sparseBlocks) lookup(n uint32, b byte) uint16 {
	offset := t.offset[n]
	header := t.values[offset]
	lo := offset + 1
	hi := lo + uint16(header.lo)
	for lo < hi {
		m := lo + (hi-lo)/2
		r := t.values[m]
		if r.lo <= b && b <= r.hi {
			return r.value + uint16(b-r.lo)*header.value
		}
		if b < r.lo {
			hi = m
		} else {
			lo = m + 1
		}
	}

	}
	l := int(nativeEndian.Uint16(b[:2]))
	if len(b) < l {
		return nil, errInvalidMessage
	}
	m := &InterfaceAddrMessage{
		Version: int(b[2]),
		Type:    int(b[3]),
		Flags:   int(nativeEndian.Uint32(b[8:12])),
		raw:     b[:l],
	}
	if runtime.GOOS == "netbsd" {
		m.Index = int(nativeEndian.Uint16(b[16:18]))
	} else {
		m.Index = int(nativeEndian.Uint16(b[12:14]))
	}
	var err error

type systeminfo struct {
	wProcessorArchitecture      uint16
	wReserved                   uint16
	dwPageSize                  uint32
	lpMinimumApplicationAddress uintptr
	lpMaximumApplicationAddress uintptr
	dwActiveProcessorMask       uintptr
	dwNumberOfProcessors        uint32
	dwProcessorType             uint32
	dwAllocationGranularity     uint32
	wProcessorLevel             uint16
	wProcessorRevision          uint16
}