| /* |
| * Copyright (c) 2019 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. |
| */ |
| #include "MeanStdDevNormalizationLayer.h" |
| |
| #include "arm_compute/core/Types.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| template <typename T> |
| SimpleTensor<T> mean_std_normalization_layer(const SimpleTensor<T> &src, float epsilon) |
| { |
| // Create reference |
| SimpleTensor<T> dst{ src.shape(), src.data_type(), 1 }; |
| |
| const int cols = src.shape()[0]; |
| const int batch_size = src.shape()[1]; |
| |
| for(int i = 0; i < batch_size; ++i) |
| { |
| T sum = static_cast<T>(0.f); |
| T sum_sq = static_cast<T>(0.f); |
| for(int j = 0; j < cols; ++j) |
| { |
| const T value = src[j + i * cols]; |
| sum += value; |
| sum_sq += value * value; |
| } |
| const T mean = sum / static_cast<T>(cols); |
| const T var = ((sum_sq / static_cast<T>(cols)) - (mean * mean)) + static_cast<T>(epsilon); |
| const T stddev_inv = static_cast<T>(1.f) / static_cast<T>(std::sqrt(var)); |
| for(int j = 0; j < cols; ++j) |
| { |
| dst[j + i * cols] = (src[j + i * cols] - mean) * stddev_inv; |
| } |
| } |
| return dst; |
| } |
| |
| template SimpleTensor<float> mean_std_normalization_layer(const SimpleTensor<float> &src, float epsilon); |
| template SimpleTensor<half> mean_std_normalization_layer(const SimpleTensor<half> &src, float epsilon); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |