1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* Copyright (c) 2021 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ARM_COMPUTE_ACL_OPERATORS_H_
#define ARM_COMPUTE_ACL_OPERATORS_H_
#include "arm_compute/AclDescriptors.h"
#include "arm_compute/AclTypes.h"
/** Used during an operator creation to validate its support */
#define ARM_COMPUTE_VALIDATE_OPERATOR_SUPPORT ((AclOperator *)(size_t)-1)
#ifdef __cplusplus
extern "C"
{
#endif /** __cplusplus */
/** Create an activation operator
*
* Applies an activation function to a given tensor .
* Compute Library supports a wide list of activation functions @ref AclActivationType.
*
* A summarized table is the following:
* Activation Function | Mathematical Expression |
* -------------------------|------------------------------------------------------------------------------------------------------------------------------------------|
* Identity | \f$ f(x)= x \f$ |
* Logistic | \f$ f(x) = \frac{1}{1 + e^{-x}} \f$ |
* Tanh | \f$ f(x) = a \cdot tanh(b \cdot x) \f$ |
* Relu | \f$ f(x) = max(0,x) \f$ |
* Bounded Relu | \f$ f(x) = min(a, max(0,x)) \f$ |
* Lower-Upper Bounded Relu | \f$ f(x) = min(a, max(b,x)) \f$ |
* Leaky Relu | \f$ f(x) = \begin{cases} \alpha x & \quad \text{if } x \text{ < 0}\\ x & \quad \text{if } x \geq \text{ 0 } \end{cases} \f$ |
* Soft Relu | \f$ f(x)= log(1+e^x) \f$ |
* Soft Elu | \f$ f(x) = \begin{cases} \alpha (exp(x) - 1) & \quad \text{if } x \text{ < 0}\\ x & \quad \text{if } x \geq \text{ 0 } \end{cases} \f$ |
* Abs | \f$ f(x)= |x| \f$ |
* Square | \f$ f(x)= x^2 \f$ |
* Sqrt | \f$ f(x) = \sqrt{x} \f$ |
* Linear | \f$ f(x)= ax + b \f$ |
* Hard Swish | \f$ f(x) = (x * relu6(x+3))/6 \f$ |
*
* Backends:
* - OpenCL: ClActivationLayer
* - Cpu : CpuActivationLayer
*
* @param[in, out] op Operator construct to be created if creation was successful
* @param[in] ctx Context to be used for the creation of the operator
* @param[in] src Source tensor descriptor. Slot id: ACL_SRC
* @param[in] dst Destination tensor descriptor. Slot id: ACL_DST
* @param[in] info Activation meta-data
*
* @return Status code
*
* Returns:
* - @ref AclSuccess if function was completed successfully
* - @ref AclOutOfMemory if there was a failure allocating memory resources
* - @ref AclUnsupportedTarget if operator for the requested target is unsupported
* - @ref AclInvalidArgument if a given argument is invalid
*/
AclStatus AclActivation(AclOperator *op,
AclContext ctx,
const AclTensorDescriptor *src,
const AclTensorDescriptor *dst,
const AclActivationDescriptor info);
#ifdef __cplusplus
}
#endif /** __cplusplus */
#endif /* ARM_COMPUTE_ACL_OPERATORS_H_ */
|
