(35 <= c && c <= 91) ||
				(93 <= c && c <= 126):
				// qtext
				localPartBytes = append(localPartBytes, c)

			default:
				return mailbox, false
			}
		}
	} else {
		// Atom ("." Atom)*
	NextChar:
		for len(in) > 0 {
			// atext from RFC 2822, Section 3.2.4
			c := in[0]

			switch {
			case c == '\\':
				// Examples given in RFC 3696 suggest that

		queueSize, err := strconv.Atoi(queueSizeCfgVal)
		if err != nil {
			return cfg, err
		}
		if queueSize <= 0 {
			return cfg, errInvalidQueueSize
		}
		batchSizeCfgVal := getCfgVal(EnvLoggerWebhookBatchSize, k, kv.Get(BatchSize))
		batchSize, err := strconv.Atoi(batchSizeCfgVal)
		if err != nil {
			return cfg, err
		}
		if batchSize <= 0 {

	if err = config.CheckValidKeys(config.APISubSys, kvs, DefaultKVS, deprecatedKeys...); err != nil {
		return cfg, err
	}

	// Check environment variables parameters
	requestsMax, err := strconv.Atoi(env.Get(EnvAPIRequestsMax, kvs.GetWithDefault(apiRequestsMax, DefaultKVS)))
	if err != nil {
		return cfg, err
	}

	cfg.RequestsMax = requestsMax
	if requestsMax < 0 {

		if err != nil {
			return nil, err
		}

		clientAuthEnv := target.EnvKafkaTLSClientAuth
		if k != config.Default {
			clientAuthEnv = clientAuthEnv + config.Default + k
		}
		clientAuth, err := strconv.Atoi(env.Get(clientAuthEnv, kv.Get(target.KafkaTLSClientAuth)))
		if err != nil {
			return nil, err
		}

		topicEnv := target.EnvKafkaTopic
		if k != config.Default {
			topicEnv = topicEnv + config.Default + k

	byID := vars["by-id"] == "true"

	pools := strings.Split(v, ",")
	poolIndices := make([]int, 0, len(pools))

	for _, pool := range pools {
		var idx int
		if byID {
			var err error
			idx, err = strconv.Atoi(pool)
			if err != nil {
				// We didn't find any matching pools, invalid input
				writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
				return
			}
		} else {

		w.WriteHeader(http.StatusOK)
	}))
	defer pass.Close()
	failPort, err := strconv.Atoi(strings.Split(fail.URL, ":")[2])
	if err != nil {
		t.Fatal(err)
	}
	passPort, err := strconv.Atoi(strings.Split(pass.URL, ":")[2])
	if err != nil {
		t.Fatal(err)
	}
	cases := []struct {
		name  string
		envoy int
		app   int
	}{

	}

	n := int64(un)
	if neg {
		n = -n
	}

	return n, true
}

// atoi is like atoi64 but for integers
// that fit into an int.
func atoi(s string) (int, bool) {
	if n, ok := atoi64(s); n == int64(int(n)) {
		return int(n), ok
	}
	return 0, false
}

// atoi32 is like atoi but for integers
// that fit into an int32.
func atoi32(s string) (int32, bool) {

	if !s.IsValid(w, r) {
		return
	}
	volume := r.Form.Get(storageRESTVolume)
	filePath := r.Form.Get(storageRESTFilePath)
	offset, err := strconv.Atoi(r.Form.Get(storageRESTOffset))
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	length, err := strconv.Atoi(r.Form.Get(storageRESTLength))
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	if offset < 0 || length < 0 {

		}
		cfg.EncryptedClientHelloConfigList = echConfigList
		cfg.MinVersion = VersionTLS13
	}

	if len(*curves) != 0 {
		for _, curveStr := range *curves {
			id, err := strconv.Atoi(curveStr)
			if err != nil {
				log.Fatalf("failed to parse curve id %q: %s", curveStr, err)
			}
			cfg.CurvePreferences = append(cfg.CurvePreferences, CurveID(id))
		}
	}

	}

	parts := strings.Split(ver, ".")
	// we are guaranteed to have at least major and minor based on the regex
	major, _ := strconv.Atoi(parts[0])
	minor, _ := strconv.Atoi(parts[1])
	// Assume very large patch release if not set
	patch := 65535
	if len(parts) > 2 {
		patch, _ = strconv.Atoi(parts[2])
	}
	return &IstioVersion{Major: major, Minor: minor, Patch: patch}
}