Add SafeClamp(), which accepts args of different types

webrtc/modules/audio_processing/aec3/subtractor.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/subtractor.h"
 
 #include <algorithm>
 
 #include "webrtc/base/array_view.h"
 #include "webrtc/base/checks.h"
+#include "webrtc/base/safe_minmax.h"
 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h"
 
 namespace webrtc {
 
 namespace {
 
 void PredictionError(const Aec3Fft& fft,
                      const FftData& S,
                      rtc::ArrayView<const float> y,
                      std::array<float, kBlockSize>* e,
                      FftData* E) {
   std::array<float, kFftLength> s;
   fft.Ifft(S, &s);
   constexpr float kScale = 1.0f / kFftLengthBy2;
   std::transform(y.begin(), y.end(), s.begin() + kFftLengthBy2, e->begin(),
                  [&](float a, float b) { return a - b * kScale; });
-  std::for_each(e->begin(), e->end(), [](float& a) {
-    a = std::max(std::min(a, 32767.0f), -32768.0f);
-  });
+  std::for_each(e->begin(), e->end(),
+                [](float& a) { a = rtc::SafeClamp(a, -32768.f, 32767.f); });
   fft.ZeroPaddedFft(*e, E);
 }
 }  // namespace
 
 Subtractor::Subtractor(ApmDataDumper* data_dumper,
                        Aec3Optimization optimization)
     : fft_(),
       data_dumper_(data_dumper),
       optimization_(optimization),
       main_filter_(kAdaptiveFilterLength, optimization, data_dumper_),
@@ skipping 54 matching lines @@
   shadow_filter_.Adapt(render_buffer, G);
 
   data_dumper_->DumpRaw("aec3_subtractor_G_shadow", G.re);
   data_dumper_->DumpRaw("aec3_subtractor_G_shadow", G.im);
 
   main_filter_.DumpFilter("aec3_subtractor_H_main");
   shadow_filter_.DumpFilter("aec3_subtractor_H_shadow");
 }
 
 }  // namespace webrtc