Add SafeClamp(), which accepts args of different types

webrtc/modules/audio_processing/aec3/erle_estimator.cc

 /*
  *  Copyright (c) 2017 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 "webrtc/modules/audio_processing/aec3/erle_estimator.h"
 
 #include <algorithm>
 
+#include "webrtc/base/safe_minmax.h"
+
 namespace webrtc {
 
 namespace {
 
 constexpr float kMinErle = 1.f;
 constexpr float kMaxLfErle = 8.f;
 constexpr float kMaxHfErle = 1.5f;
 
 }  // namespace
 
@@ skipping 16 matching lines @@
   constexpr float kX2Min = 44015068.0f;
 
   // Update the estimates in a clamped minimum statistics manner.
   auto erle_update = [&](size_t start, size_t stop, float max_erle) {
     for (size_t k = start; k < stop; ++k) {
       if (X2[k] > kX2Min && E2[k] > 0.f) {
         const float new_erle = Y2[k] / E2[k];
         if (new_erle > erle_[k]) {
           hold_counters_[k - 1] = 100;
           erle_[k] += 0.1f * (new_erle - erle_[k]);
-          erle_[k] = std::max(kMinErle, std::min(erle_[k], max_erle));
+          erle_[k] = rtc::SafeClamp(erle_[k], kMinErle, max_erle);
         }
       }
     }
   };
   erle_update(1, kFftLengthBy2 / 2, kMaxLfErle);
   erle_update(kFftLengthBy2 / 2, kFftLengthBy2, kMaxHfErle);
 
   std::for_each(hold_counters_.begin(), hold_counters_.end(),
                 [](int& a) { --a; });
   std::transform(hold_counters_.begin(), hold_counters_.end(),
                  erle_.begin() + 1, erle_.begin() + 1, [](int a, float b) {
                    return a > 0 ? b : std::max(kMinErle, 0.97f * b);
                  });
 
   erle_[0] = erle_[1];
   erle_[kFftLengthBy2] = erle_[kFftLengthBy2 - 1];
 }
 
 }  // namespace webrtc