commit e90879097c7151148aaad57393967cf72d233a69
author Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com> Fri Jul 06 09:29:32 2018
committer Commit Bot <commit-bot@chromium.org> Fri Jul 06 11:03:41 2018
tree 2a7a2f29ba4ce857564a1d672401d02d0f857d6b
parent b2daaaacbd1f9bf016e0f169006ccf2ab0ad2270

IWYU: Add <cmath> for fabsf() and powf(), switch to C++ versions

Fix the build with libstdc++ after 496cedfe5 ("AEC3: Reverberation model:
Changes on the decay estimation") by including the missing header:

    ../../modules/audio_processing/aec3/reverb_model_estimator.cc: In constructor ‘webrtc::ReverbModelEstimator::ReverbModelEstimator(const webrtc::EchoCanceller3Config&)’:
    ../../modules/audio_processing/aec3/reverb_model_estimator.cc:61:21: error: ‘fabsf’ was not declared in this scope
           reverb_decay_(fabsf(config.ep_strength.default_len)),
                         ^~~~~
    ../../modules/audio_processing/aec3/reverb_model_estimator.cc:61:21: note: suggested alternative: ‘labs’
           reverb_decay_(fabsf(config.ep_strength.default_len)),
                         ^~~~~
                         labs
    ../../modules/audio_processing/aec3/reverb_model_estimator.cc: In member function ‘void webrtc::ReverbModelEstimator::UpdateReverbDecay(const std::vector<float>&)’:
    ../../modules/audio_processing/aec3/reverb_model_estimator.cc:206:15: error: ‘powf’ was not declared in this scope
           decay = powf(2.0f, -exp_candidate * kFftLengthBy2);
                   ^~~~

While here, also switch to the C++ versions of those functions: std::fabs()
and std::pow() respectively.

Spotted by Jose Dapena Paz <jose.dapena@lge.com>.

Bug: chromium:819294
Change-Id: Id803243be8dd17eac95c70a88a37ee2fe1505a5a
Reviewed-on: https://webrtc-review.googlesource.com/87421
Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23870}

modules/audio_processing/aec3/reverb_model_estimator.cc

diff --git a/modules/audio_processing/aec3/reverb_model_estimator.cc b/modules/audio_processing/aec3/reverb_model_estimator.cc
index 18b2a84..84e8e48 100644
--- a/modules/audio_processing/aec3/reverb_model_estimator.cc
+++ b/modules/audio_processing/aec3/reverb_model_estimator.cc
@@ -12,6 +12,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cmath>
 #include <memory>
 #include <numeric>
 
@@ -58,7 +59,7 @@
 
 ReverbModelEstimator::ReverbModelEstimator(const EchoCanceller3Config& config)
     : filter_main_length_blocks_(config.filter.main.length_blocks),
-      reverb_decay_(fabsf(config.ep_strength.default_len)),
+      reverb_decay_(std::fabs(config.ep_strength.default_len)),
       enable_smooth_freq_resp_tail_updates_(EnableSmoothUpdatesTailFreqResp()) {
   block_energies_.fill(0.f);
   freq_resp_tail_.fill(0.f);
@@ -203,7 +204,7 @@
 
     if (accumulated_nn_ != 0.f) {
       const float exp_candidate = -accumulated_nz_ / accumulated_nn_;
-      decay = powf(2.0f, -exp_candidate * kFftLengthBy2);
+      decay = std::pow(2.0f, -exp_candidate * kFftLengthBy2);
       decay = std::min(decay, kMaxDecay);
       decay = std::max(decay, kMinDecay);
     }