Compute Library
 21.02
ActivationLayer.h
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1 /*
2  * Copyright (c) 2017-2020 Arm Limited.
3  *
4  * SPDX-License-Identifier: MIT
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24 #ifndef ARM_COMPUTE_TEST_ACTIVATION_LAYER_H
25 #define ARM_COMPUTE_TEST_ACTIVATION_LAYER_H
26 
27 #include "tests/SimpleTensor.h"
29 
30 namespace arm_compute
31 {
32 namespace test
33 {
34 namespace validation
35 {
36 namespace reference
37 {
38 template <typename T>
39 inline T activate_float(T x, T a, T b, ActivationLayerInfo::ActivationFunction activation)
40 {
41  T ret;
42 
43  switch(activation)
44  {
46  ret = std::abs(x);
47  break;
49  ret = a * x + b;
50  break;
52  ret = static_cast<T>(1) / (static_cast<T>(1) + std::exp(-x));
53  break;
55  ret = std::max<T>(static_cast<T>(0), x);
56  break;
58  ret = std::min<T>(a, std::max(static_cast<T>(0), x));
59  break;
61  ret = std::min<T>(a, std::max<T>(b, x));
62  break;
64  ret = (x > 0) ? x : a * x;
65  break;
67  ret = std::log(static_cast<T>(1) + std::exp(x));
68  break;
70  ret = (x > 0) ? x : a * (std::exp(x) - static_cast<T>(1));
71  break;
73  ret = std::sqrt(x);
74  break;
76  ret = x * x;
77  break;
79  ret = a * std::tanh(b * x);
80  break;
82  ret = x;
83  break;
85  ret = x * ((std::min(std::max(static_cast<T>(x + 3), static_cast<T>(0.0f)), static_cast<T>(6.0f))) * 0.166666667f);
86  break;
87  default:
88  ARM_COMPUTE_ERROR("Unsupported activation function");
89  break;
90  }
91 
92  return ret;
93 }
94 
95 template <typename T>
97 } // namespace reference
98 } // namespace validation
99 } // namespace test
100 } // namespace arm_compute
101 #endif /* ARM_COMPUTE_TEST_ACTIVATION_LAYER_H */
SimpleTensor< T > activation_layer(const SimpleTensor< T > &src, ActivationLayerInfo info, const QuantizationInfo &oq_info)
T activate_float(T x, T a, T b, ActivationLayerInfo::ActivationFunction activation)
SimpleTensor< float > b
Definition: DFT.cpp:157
#define ARM_COMPUTE_ERROR(msg)
Print the given message then throw an std::runtime_error.
Definition: Error.h:352
Activation Layer Information class.
Definition: Types.h:1550
SimpleTensor< float > src
Definition: DFT.cpp:155
Copyright (c) 2017-2021 Arm Limited.
ActivationFunction
Available activation functions.
Definition: Types.h:1554
Quantization information.
Simple tensor object that stores elements in a consecutive chunk of memory.
Definition: SimpleTensor.h:58
ScaleKernelInfo info(interpolation_policy, default_border_mode, PixelValue(), sampling_policy, false)