experiments/STT-tensorflow
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Qualify calls to some functions from <cmath>.

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PiperOrigin-RevId: 240193243
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A. Unique TensorFlower 2019-03-25 12:20:45 -07:00 committed by TensorFlower Gardener
parent c3865e746b
commit 962df45ebe
1 changed files with 4 additions and 3 deletions
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7
tensorflow/lite/experimental/micro/examples/micro_speech/simple_features/simple_features_generator.cc
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@ -51,11 +51,12 @@ void CalculateDiscreteFourierTransform(float* time_series, int time_series_size,
for (int i = 0; i < time_series_size / 2; ++i) { for (int i = 0; i < time_series_size / 2; ++i) {
float real = 0; float real = 0;
for (int j = 0; j < time_series_size; ++j) { for (int j = 0; j < time_series_size; ++j) {
real += time_series[j] * cos(j * i * kPi * 2 / time_series_size); real += time_series[j] * std::cos(j * i * kPi * 2 / time_series_size);
} }
float imaginary = 0; float imaginary = 0;
for (int j = 0; j < time_series_size; ++j) { for (int j = 0; j < time_series_size; ++j) {
imaginary -= time_series[j] * sin(j * i * kPi * 2 / time_series_size); imaginary -=
time_series[j] * std::sin(j * i * kPi * 2 / time_series_size);
} }
fourier_output[(i * 2) + 0] = real; fourier_output[(i * 2) + 0] = real;
fourier_output[(i * 2) + 1] = imaginary; fourier_output[(i * 2) + 1] = imaginary;
@ -66,7 +67,7 @@ void CalculateDiscreteFourierTransform(float* time_series, int time_series_size,
// of the current sample window are weighted more heavily than those at the end. // of the current sample window are weighted more heavily than those at the end.
void CalculatePeriodicHann(int window_length, float* window_function) { void CalculatePeriodicHann(int window_length, float* window_function) {
for (int i = 0; i < window_length; ++i) { for (int i = 0; i < window_length; ++i) {
window_function[i] = 0.5 - 0.5 * cos((2 * kPi * i) / window_length); window_function[i] = 0.5 - 0.5 * std::cos((2 * kPi * i) / window_length);
} }
} }