}
		strs = make([]string, hint)
	}

	m := make(MIMEHeader, hint)

	// Account for 400 bytes of overhead for the MIMEHeader, plus 200 bytes per entry.
	// Benchmarking map creation as of go1.20, a one-entry MIMEHeader is 416 bytes and large
	// MIMEHeaders average about 200 bytes per entry.
	maxMemory -= 400
	const mapEntryOverhead = 200

	}
}

// Define a pair of blackholed (IPv4, IPv6) addresses, for which dialTCP is
// expected to hang until the timeout elapses. These addresses are reserved
// for benchmarking by RFC 6890.
const (
	slowDst4 = "198.18.0.254"
	slowDst6 = "2001:2::254"
)

// In some environments, the slow IPs may be explicitly unreachable, and fail

// address field if the hostname is not a wildcard, or when resolution
// is not NONE. The IPs are allocated from the reserved Class E subnet
// (240.240.0.0/16) that is not reachable outside the pod or reserved
// Benchmarking IP range (2001:2::/48) in RFC5180. When DNS
// capture is enabled, Envoy will resolve the DNS to these IPs. The
// listeners for TCP services will also be set up on these IPs. The

// of the benchmarks to ensure side-effect free calls
// are not optimized away.
var Input uint64 = DeBruijn64

// Exported (global) variable to store function results
// during benchmarking to ensure side-effect free calls
// are not optimized away.
var Output int

func BenchmarkLeadingZeros(b *testing.B) {
	var s int
	for i := 0; i < b.N; i++ {
		s += LeadingZeros(uint(Input) >> (uint(i) % UintSize))

	// AutoAllocatedIPv4Address and AutoAllocatedIPv6Address specifies
	// the automatically allocated IPv4/IPv6 address out of the reserved
	// Class E subnet (240.240.0.0/16) or reserved Benchmarking IP range
	// (2001:2::/48) in RFC5180.for service entries with non-wildcard
	// hostnames. The IPs assigned to services are not
	// synchronized across istiod replicas as the DNS resolution

		latencies = append(latencies, time.Since(start))
	}
	// Make sure to stop the timer before we wait! The load created above
	// is very heavy-weight and not easy to stop, so we could end up
	// confusing the benchmarking framework for small b.N.
	b.StopTimer()
	stop()

	// Disable the default */op metrics.
	// ns/op doesn't mean anything because it's an average, but we

// #cgo noescape handleGoStringPointerNoescape
void handleGoStringPointerNoescape(void *s) {}

void handleGoStringPointerEscape(void *s) {}

// Following mimics vulkan complex definitions for benchmarking cgocheck overhead.

typedef uint32_t VkFlags;
typedef VkFlags  VkDeviceQueueCreateFlags;
typedef uint32_t VkStructureType;

typedef struct VkDeviceQueueCreateInfo {
    VkStructureType             sType;

	}
}
func BenchmarkRect(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Rect(2.5, 1.5)
	}
}
func BenchmarkSin(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Sin(complex(2.5, 3.5))
	}
}
func BenchmarkSinh(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Sinh(complex(2.5, 3.5))
	}
}
func BenchmarkSqrt(b *testing.B) {
	for i := 0; i < b.N; i++ {

	// for now, we just make sure this doesn't crash. To be totally correct, we'd need to capture stderr and
	// inspect it, but it's just not worth it
	defaultScope.Error("TestBadWriter")
}

func BenchmarkLog(b *testing.B) {
	run := func(name string, f func()) {
		b.Run(name, func(b *testing.B) {
			o := testOptions()
			o.OutputPaths = []string{"/dev/null"}
			if err := Configure(o); err != nil {

		{"P384", elliptic.P384()},
		{"P521", elliptic.P521()},
	}
	for _, test := range tests {
		curve := test.curve
		b.Run(test.name, func(b *testing.B) {
			f(b, curve)
		})
	}
}

func BenchmarkSign(b *testing.B) {
	benchmarkAllCurves(b, func(b *testing.B, curve elliptic.Curve) {
		r := bufio.NewReaderSize(rand.Reader, 1<<15)
		priv, err := GenerateKey(curve, r)
		if err != nil {
			b.Fatal(err)
		}