1 /* 2 * Copyright (c) 2018-2020 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 #ifndef ARM_COMPUTE_NEELEMENTWISEUNARYKERNEL_H 25 #define ARM_COMPUTE_NEELEMENTWISEUNARYKERNEL_H 26 27 #include "arm_compute/core/Types.h" 28 #include "src/core/NEON/INEKernel.h" 29 30 namespace arm_compute 31 { 32 class ITensor; 33 34 /** Interface for an element-wise unary operation kernel 35 * 36 * Element-wise operation is computed by: 37 * @f[ output(x) = OP(input(x))@f] 38 * 39 */ 40 class NEElementwiseUnaryKernel : public INEKernel 41 { 42 public: name()43 const char *name() const override 44 { 45 return "NEElementwiseUnaryKernel"; 46 } 47 /** Default constructor */ 48 NEElementwiseUnaryKernel(); 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEElementwiseUnaryKernel(const NEElementwiseUnaryKernel &) = delete; 51 /** Prevent instances of this class from being copied (As this class contains pointers) */ 52 NEElementwiseUnaryKernel &operator=(const NEElementwiseUnaryKernel &) = delete; 53 /** Allow instances of this class to be moved */ 54 NEElementwiseUnaryKernel(NEElementwiseUnaryKernel &&) = default; 55 /** Allow instances of this class to be moved */ 56 NEElementwiseUnaryKernel &operator=(NEElementwiseUnaryKernel &&) = default; 57 /** Default destructor */ 58 ~NEElementwiseUnaryKernel() = default; 59 60 /** Function to configure the @ref NEElementwiseUnaryKernel 61 * 62 * @param[in] op Arithmetic operation to be executed. 63 * @param[in] input First tensor input. Data types supported: F16/F32, F16/F32/S32 for NEG/ABS operations. 64 * @param[out] output Output tensor. Data types supported: Same as @p input. 65 */ 66 void configure(ElementWiseUnary op, const ITensor *input, ITensor *output); 67 68 /** Static function to check if given info will lead to a valid configuration of @ref NEElementwiseUnaryKernel 69 * 70 * @param[in] op Arithmetic operation to be executed. 71 * @param[in] input First tensor input info. Data types supported: F16/F32, F16/F32/S32 for NEG/ABS operations. 72 * @param[in] output Output tensor info. Data types supported: Same as @p input. 73 * 74 * @return a Status 75 */ 76 static Status validate(ElementWiseUnary op, const ITensorInfo *input, const ITensorInfo *output); 77 78 // Inherited methods overridden: 79 void run(const Window &window, const ThreadInfo &info) override; 80 81 private: 82 /** Common signature for all the specialised arithmetic functions 83 * 84 * @param[in] window Region on which to execute the kernel. 85 */ 86 using ElementwiseUnaryPtr = void (NEElementwiseUnaryKernel::*)(const Window &window); 87 88 /** Template function to run elementwise unary operation 89 * 90 * @tparam ScalarType Scalar datatype 91 * 92 * @param[in] window Region on which to execute the kernel. (Must be a valid region of the window returned by window()). 93 */ 94 template <typename ScalarType> 95 void elementwise_op(const Window &window); 96 97 ElementwiseUnaryPtr _func; 98 const ITensor *_input; 99 ITensor *_output; 100 ElementWiseUnary _op; 101 }; 102 } // namespace arm_compute 103 #endif /* ARM_COMPUTE_NEELEMENTWISEUNARYKERNEL_H */ 104