int pos = indexIn(string);
    if (pos == -1) {
      return string;
    }

    char[] chars = string.toCharArray();
    int spread = 1;

    // This unusual loop comes from extensive benchmarking
    OUT:
    while (true) {
      pos++;
      while (true) {
        if (pos == chars.length) {
          break OUT;
        }
        if (matches(chars[pos])) {
          break;
        }

    int pos = indexIn(string);
    if (pos == -1) {
      return string;
    }

    char[] chars = string.toCharArray();
    int spread = 1;

    // This unusual loop comes from extensive benchmarking
    OUT:
    while (true) {
      pos++;
      while (true) {
        if (pos == chars.length) {
          break OUT;
        }
        if (matches(chars[pos])) {
          break;
        }

		}
	}
}

// ip4i was one of the possible representations of IP that came up in
// discussions, inlining IPv4 addresses, but having an "overflow"
// interface for IPv6 or IPv6 + zone. This is here for benchmarking.
type ip4i struct {
	ip4    [4]byte
	flags1 byte
	flags2 byte
	flags3 byte
	flags4 byte
	ipv6   any
}

func newip4i_v4(a, b, c, d byte) ip4i {

  @ParametricNullness
  private V getDoneValue(Object obj) throws ExecutionException {
    // While this seems like it might be too branch-y, simple benchmarking proves it to be
    // unmeasurable (comparing done AbstractFutures with immediateFuture)
    if (obj instanceof Cancellation) {
      throw cancellationExceptionWithCause("Task was cancelled.", ((Cancellation) obj).cause);

  @ParametricNullness
  private V getDoneValue(Object obj) throws ExecutionException {
    // While this seems like it might be too branch-y, simple benchmarking proves it to be
    // unmeasurable (comparing done AbstractFutures with immediateFuture)
    if (obj instanceof Cancellation) {
      throw cancellationExceptionWithCause("Task was cancelled.", ((Cancellation) obj).cause);

// pointers, this allows the GC to run before it is all cleared.
func memclrNoHeapPointersChunked(size uintptr, x unsafe.Pointer) {
	v := uintptr(x)
	// got this from benchmarking. 128k is too small, 512k is too large.
	const chunkBytes = 256 * 1024
	vsize := v + size
	for voff := v; voff < vsize; voff = voff + chunkBytes {
		if getg().preempt {
			// may hold locks, e.g., profiling

				if err != nil {
					b.Fatalf("parse selector: %v", err)
				}
				pred := storage.SelectionPredicate{
					Label: labels.Everything(),
					Field: parsedField,
				}

				// now we start benchmarking
				b.ResetTimer()
				for i := 0; i < b.N; i++ {
					result := &example.PodList{}
					err = cacher.GetList(context.TODO(), "pods", storage.ListOptions{
						Predicate:       pred,

	var buf bytes.Buffer
	if len(pkgArgs) == 0 || testBench != "" || testFuzz != "" {
		// Stream test output (no buffering) when no package has
		// been given on the command line (implicit current directory)
		// or when benchmarking or fuzzing.
		// No change to stdout.
	} else {
		// If we're only running a single package under test or if parallelism is
		// set to 1, and if we're displaying all output (testShowPass), we can

	}
	GlobalB = x
}

func BenchmarkSin(b *testing.B) {
	x := 0.0
	for i := 0; i < b.N; i++ {
		x = Sin(.5)
	}
	GlobalF = x
}

func BenchmarkSincos(b *testing.B) {
	x := 0.0
	y := 0.0
	for i := 0; i < b.N; i++ {
		x, y = Sincos(.5)
	}
	GlobalF += x
	GlobalF += y
}

func BenchmarkSinh(b *testing.B) {
	x := 0.0
	for i := 0; i < b.N; i++ {