text: /*
   *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  #include "api/units/frequency.h"
  
  #include "rtc_base/strings/string_builder.h"
  
  namespace webrtc {
  std::string ToString(Frequency value) {
    char buf[64];
    rtc::SimpleStringBuilder sb(buf);
    if (value.IsPlusInfinity()) {
      sb << "+inf Hz";
    } else if (value.IsMinusInfinity()) {
      sb << "-inf Hz";
    } else if (value.millihertz<int64_t>() % 1000 != 0) {
      sb.AppendFormat("%.3f Hz", value.hertz<double>());
    } else {
      sb << value.hertz<int64_t>() << " Hz";
    }
    return sb.str();
  }
  }  // namespace webrtc
  