diff options
Diffstat (limited to 'common_audio/smoothing_filter.cc')
| -rw-r--r-- | common_audio/smoothing_filter.cc | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/common_audio/smoothing_filter.cc b/common_audio/smoothing_filter.cc index e5ce987786..422eaebd14 100644 --- a/common_audio/smoothing_filter.cc +++ b/common_audio/smoothing_filter.cc @@ -10,6 +10,7 @@ #include "common_audio/smoothing_filter.h" +#include <math.h> #include <cmath> #include "rtc_base/checks.h" @@ -71,7 +72,7 @@ bool SmoothingFilterImpl::SetTimeConstantMs(int time_constant_ms) { } void SmoothingFilterImpl::UpdateAlpha(int time_constant_ms) { - alpha_ = time_constant_ms == 0 ? 0.0f : exp(-1.0f / time_constant_ms); + alpha_ = time_constant_ms == 0 ? 0.0f : std::exp(-1.0f / time_constant_ms); } void SmoothingFilterImpl::ExtrapolateLastSample(int64_t time_ms) { @@ -93,12 +94,12 @@ void SmoothingFilterImpl::ExtrapolateLastSample(int64_t time_ms) { multiplier = 0.0f; } else if (init_time_ms_ == 1) { // This means |init_factor_| = 1. - multiplier = exp(last_state_time_ms_ - time_ms); + multiplier = std::exp(last_state_time_ms_ - time_ms); } else { - multiplier = - exp(-(powf(init_factor_, last_state_time_ms_ - *init_end_time_ms_) - - powf(init_factor_, time_ms - *init_end_time_ms_)) / - init_const_); + multiplier = std::exp( + -(powf(init_factor_, last_state_time_ms_ - *init_end_time_ms_) - + powf(init_factor_, time_ms - *init_end_time_ms_)) / + init_const_); } } else { if (last_state_time_ms_ < *init_end_time_ms_) { |