lock  mutex
	seed  [32]byte
	state chacha8rand.State
	init  bool
}

var readRandomFailed bool

// randinit initializes the global random state.
// It must be called before any use of grand.
func randinit() {
	lock(&globalRand.lock)
	if globalRand.init {
		fatal("randinit twice")
	}

	seed := &globalRand.seed
	if startupRand != nil {
		for i, c := range startupRand {
			seed[i%len(seed)] ^= c

// This file implements a GCD benchmark.
// Usage: go test math/big -test.bench GCD

package big

import (
	"math/rand"
	"testing"
)

// randInt returns a pseudo-random Int in the range [1<<(size-1), (1<<size) - 1]
func randInt(r *rand.Rand, size uint) *Int {
	n := new(Int).Lsh(intOne, size-1)
	x := new(Int).Rand(r, n)
	return x.Add(x, n) // make sure result > 1<<(size-1)
}

//   int8_t DidInitRun();
//   int8_t DidMainRun();
//   int32_t FromPkg();
//   uint32_t Divu(uint32_t, uint32_t);
int main(void) {
  int8_t ran_init = DidInitRun();
  if (!ran_init) {
    fprintf(stderr, "ERROR: DidInitRun returned unexpected results: %d\n",
            ran_init);
    return 1;
  }
  int8_t ran_main = DidMainRun();
  if (ran_main) {
    fprintf(stderr, "ERROR: DidMainRun returned unexpected results: %d\n",

	"golang.org/x/net/dns/dnsmessage"
)

// provided by runtime
//
//go:linkname runtime_rand runtime.rand
func runtime_rand() uint64

func randInt() int {
	return int(uint(runtime_rand()) >> 1) // clear sign bit
}

func randIntn(n int) int {
	return randInt() % n
}

// reverseaddr returns the in-addr.arpa. or ip6.arpa. hostname of the IP
// address addr suitable for rDNS (PTR) record lookup or an error if it fails

	if gp != gp.m.g0 {
		callers(1, mp.createstack[:])
	}

	lock(&sched.lock)

	if id >= 0 {
		mp.id = id
	} else {
		mp.id = mReserveID()
	}

	mrandinit(mp)

	mpreinit(mp)
	if mp.gsignal != nil {
		mp.gsignal.stackguard1 = mp.gsignal.stack.lo + stackGuard
	}

	// Add to allm so garbage collector doesn't free g->m

			benchmarkIntSqr(b, n)
		})
	}
}

func benchmarkDiv(b *testing.B, aSize, bSize int) {
	var r = rand.New(rand.NewSource(1234))
	aa := randInt(r, uint(aSize))
	bb := randInt(r, uint(bSize))
	if aa.Cmp(bb) < 0 {
		aa, bb = bb, aa
	}
	x := new(Int)
	y := new(Int)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		x.DivMod(aa, bb, y)
	}
}

	// gets set to true.
	errServerTemporarilyMisbehaving = &temporaryError{"server misbehaving"}
)

func newRequest(q dnsmessage.Question, ad bool) (id uint16, udpReq, tcpReq []byte, err error) {
	id = uint16(randInt())
	b := dnsmessage.NewBuilder(make([]byte, 2, 514), dnsmessage.Header{ID: id, RecursionDesired: true, AuthenticData: ad})
	if err := b.StartQuestions(); err != nil {
		return 0, nil, nil, err
	}

	// generate a random number between 13 and 200.
	randInt := getRandomRange(13, 200, -1)
	// write into buffer till length of the buffer is greater than the generated random number.
	for i := 0; i <= randInt; i += 10 {
		buffer.WriteString(data)
	}
	// String content which is used for put object range test.
	putBytes := buffer.Bytes()
	putBytes = putBytes[:randInt]