useInt(a[i+51]) // ERROR "Found IsInBounds$"
	}
}

func decode1(data []byte) (x uint64) {
	for len(data) >= 32 {
		x += binary.BigEndian.Uint64(data[:8])
		x += binary.BigEndian.Uint64(data[8:16])
		x += binary.BigEndian.Uint64(data[16:24])
		x += binary.BigEndian.Uint64(data[24:32])
		data = data[32:]
	}
	return x
}

func decode2(data []byte) (x uint64) {

}

func SuiteID(kemID, kdfID, aeadID uint16) []byte {
	suiteID := make([]byte, 0, 4+2+2+2)
	suiteID = append(suiteID, []byte("HPKE")...)
	suiteID = binary.BigEndian.AppendUint16(suiteID, kemID)
	suiteID = binary.BigEndian.AppendUint16(suiteID, kdfID)
	suiteID = binary.BigEndian.AppendUint16(suiteID, aeadID)
	return suiteID
}

func ParseHPKEPublicKey(kemID uint16, bytes []byte) (*ecdh.PublicKey, error) {

	x, y := d.info[offset], d.info[offset+1]
	switch {
	case x == 0 && y == 0:
		return nil, DecodeError{"info", 4, "unsupported version 0"}
	case x == 0:
		d.bigEndian = true
		d.order = binary.BigEndian
	case y == 0:
		d.bigEndian = false
		d.order = binary.LittleEndian
	default:
		return nil, DecodeError{"info", 4, "cannot determine byte order"}
	}

	u, err := d.parseUnits()
	if err != nil {

	return &lengthDelimitedFrameWriter{w: w}
}

// Write writes a single frame to the nested writer, prepending it with the length
// in bytes of data (as a 4 byte, bigendian uint32).
func (w *lengthDelimitedFrameWriter) Write(data []byte) (int, error) {
	binary.BigEndian.PutUint32(w.h[:], uint32(len(data)))
	n, err := w.w.Write(w.h[:])
	if err != nil {
		return 0, err
	}
	if n != len(w.h) {
		return 0, io.ErrShortWrite
	}

		return nil, fmt.Errorf("unrecognised archive magic: 0x%x", magic)
	}

	var fhdr bigarFileHeader
	if _, err := sr.Seek(0, io.SeekStart); err != nil {
		return nil, err
	}
	if err := binary.Read(sr, binary.BigEndian, &fhdr); err != nil {
		return nil, err
	}

	off, err := parseDecimalBytes(fhdr.Flfstmoff[:])
	if err != nil {
		return nil, fmt.Errorf("error parsing offset of first member in archive header(%q); %v", fhdr, err)

			return 0, 0
		}
		n = 4
		size = binary.BigEndian.Uint32(s)
		size &^= 1 << 31
	}
	return size, n
}

func readString(s []byte, size uint32) string {
	if size > uint32(len(s)) {
		return ""
	}
	return string(s[:size])
}

func encodeSize(b []byte, size uint32) int {
	if size > 127 {
		size |= 1 << 31
		binary.BigEndian.PutUint32(b, size)
		return 4
	}
	b[0] = byte(size)

	rtmVersion   byte
	wireFormats  map[int]*wireFormat
)

func init() {
	i := uint32(1)
	b := (*[4]byte)(unsafe.Pointer(&i))
	if b[0] == 1 {
		nativeEndian = littleEndian
	} else {
		nativeEndian = bigEndian
	}
	// might get overridden in probeRoutingStack
	rtmVersion = syscall.RTM_VERSION
	kernelAlign, wireFormats = probeRoutingStack()
}

func roundup(l int) int {
	if l == 0 {
		return kernelAlign
	}

	// Start with the magic number.
	err := binary.Read(sr, binary.BigEndian, &ff.Magic)
	if err != nil {
		return nil, &FormatError{0, "error reading magic number", nil}
	} else if ff.Magic != MagicFat {
		// See if this is a Mach-O file via its magic number. The magic
		// must be converted to little endian first though.
		var buf [4]byte
		binary.BigEndian.PutUint32(buf[:], ff.Magic)
		leMagic := binary.LittleEndian.Uint32(buf[:])

		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		z.err = err
		return n, z.err
	}
	// ZLIB (RFC 1950) is big-endian, unlike GZIP (RFC 1952).
	checksum := binary.BigEndian.Uint32(z.scratch[:4])
	if checksum != z.digest.Sum32() {
		z.err = ErrChecksum
		return n, z.err
	}
	return n, io.EOF
}

// license that can be found in the LICENSE file.

//go:build armbe || arm64be || m68k || mips || mips64 || mips64p32 || ppc || ppc64 || s390 || s390x || shbe || sparc || sparc64

package binary

type nativeEndian struct {
	bigEndian
}

// NativeEndian is the native-endian implementation of [ByteOrder] and [AppendByteOrder].