| /* |
| * 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_ */ |