Compute Library
 21.08
MeanStdDevNormalizationLayer.cpp
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25 
26 #include "arm_compute/core/Types.h"
27 
28 namespace arm_compute
29 {
30 namespace test
31 {
32 namespace validation
33 {
34 namespace reference
35 {
36 template <typename T>
38 {
39  // Create reference
40  SimpleTensor<T> dst{ src.shape(), src.data_type(), 1 };
41 
42  const int cols = src.shape()[0];
43  const int batch_size = src.shape()[1];
44 
45  for(int i = 0; i < batch_size; ++i)
46  {
47  T sum = static_cast<T>(0.f);
48  T sum_sq = static_cast<T>(0.f);
49  for(int j = 0; j < cols; ++j)
50  {
51  const T value = src[j + i * cols];
52  sum += value;
53  sum_sq += value * value;
54  }
55  const T mean = sum / static_cast<T>(cols);
56  const T var = ((sum_sq / static_cast<T>(cols)) - (mean * mean)) + static_cast<T>(epsilon);
57  const T stddev_inv = static_cast<T>(1.f) / static_cast<T>(std::sqrt(var));
58  for(int j = 0; j < cols; ++j)
59  {
60  dst[j + i * cols] = (src[j + i * cols] - mean) * stddev_inv;
61  }
62  }
63  return dst;
64 }
65 
67 template SimpleTensor<half> mean_std_normalization_layer(const SimpleTensor<half> &src, float epsilon);
68 } // namespace reference
69 } // namespace validation
70 } // namespace test
71 } // namespace arm_compute
DataType data_type() const override
Data type of the tensor.
Definition: SimpleTensor.h:357
TensorShape shape() const override
Shape of the tensor.
Definition: SimpleTensor.h:320
SimpleTensor< float > src
Definition: DFT.cpp:155
Copyright (c) 2017-2021 Arm Limited.
Simple tensor object that stores elements in a consecutive chunk of memory.
Definition: SimpleTensor.h:58
SimpleTensor< T > mean_std_normalization_layer(const SimpleTensor< T > &src, float epsilon)