return 0, 0, ENOSYS
}

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	return 0, ENOSYS
}

func Umask(mask int) int {
	return 0
}

type Timespec struct {
	Sec  int64
	Nsec int64
}

func (ts *Timespec) timestamp() timestamp {
	return timestamp(ts.Sec*1e9) + timestamp(ts.Nsec)
}

	// and this function will return false.
	const mask = 0 |
		1<<'.' |
		1<<',' |
		1<<':' |
		1<<';' |
		1<<'?' |
		1<<'!'

	return ((uint64(1)<<c)&(mask&(1<<64-1)) |
		(uint64(1)<<(c-64))&(mask>>64)) != 0
}

// isPath reports whether c is a (non-punctuation) path byte.
func isPath(c byte) bool {
	// mask is a 128-bit bitmap with 1s for allowed bytes,

      return null;
    }
    if (hashTableObject instanceof byte[]) {
      byte[] hashTable = (byte[]) hashTableObject;
      int mask = hashTable.length - 1;
      for (int h = Hashing.smear(key.hashCode()); ; h++) {
        h &= mask;
        int keyIndex = hashTable[h] & BYTE_MASK; // unsigned read
        if (keyIndex == BYTE_MASK) { // -1 signed becomes 255 unsigned
          return null;

		}
		return res
	default:
		return []Name{name}
	}
}

// Mask returns the type as mask.
// Compound "All" types are expanded.
func (name Name) Mask() uint64 {
	if name < objectSingleTypesEnd {
		return 1 << (name - 1)
	}
	var mask uint64
	for _, n := range name.Expand() {
		mask |= 1 << (n - 1)
	}
	return mask
}

// String - returns string representation of event type.

type stopping struct {
	c chan<- os.Signal
	h *handler
}

type handler struct {
	mask [(numSig + 31) / 32]uint32
}

func (h *handler) want(sig int) bool {
	return (h.mask[sig/32]>>uint(sig&31))&1 != 0
}

func (h *handler) set(sig int) {
	h.mask[sig/32] |= 1 << uint(sig&31)
}

func (h *handler) clear(sig int) {
	h.mask[sig/32] &^= 1 << uint(sig&31)
}

    in 'a'..'f' -> this - 'a' + 10
    in 'A'..'F' -> this - 'A' + 10
    else -> -1
  }

internal infix fun Byte.and(mask: Int): Int = toInt() and mask

internal infix fun Short.and(mask: Int): Int = toInt() and mask

internal infix fun Int.and(mask: Long): Long = toLong() and mask

@Throws(IOException::class)
internal fun BufferedSink.writeMedium(medium: Int) {
  writeByte(medium.ushr(16) and 0xff)

    DefaultCompositeExclude(ImmutableSet<ExcludeSpec> components) {
        this.components = components;
        this.size = components.size();
        this.hashCode = (31 * components.hashCode() + this.size) ^ mask();
    }

    abstract int mask();

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {

//
//go:nosplit
func setSignalstackSP(s *stackt, sp uintptr) {
	s.ss_sp = sp
}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	*mask |= 1 << (uint32(i) - 1)
}

func sigdelset(mask *sigset, i int) {
	*mask &^= 1 << (uint32(i) - 1)
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

func setProcessCPUProfiler(hz int32) {

	}

	pattern := event.NewPattern(prefix, suffix)

	var eventNames []event.Name
	var mask pubsub.Mask
	for _, s := range values[peerRESTListenEvents] {
		eventName, err := event.ParseName(s)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		mask.MergeMaskable(eventName)
		eventNames = append(eventNames, eventName)
	}

	if bucketName != "" {

		image.Rectangle{},
		image.Pt(44, 33),
		image.Point{},
		true,
		image.Rect(0, 0, 36, 47),
		image.Pt(44, 33),
		image.Point{},
	},

	// The following tests all have a non-nil mask.
	{
		"basic mask",
		image.Rect(0, 0, 80, 80),
		image.Rect(20, 0, 100, 80),
		image.Rect(0, 0, 50, 49),
		image.Rect(0, 0, 46, 47),
		image.Point{},
		image.Point{},
		false,
		image.Rect(20, 0, 46, 47),