John Richardson | 338b195 | 2017-08-24 12:03:42 +0100 | [diff] [blame] | 1 | /* |
Michele Di Giorgio | d9eaf61 | 2020-07-08 11:12:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017-2018 Arm Limited. |
John Richardson | 338b195 | 2017-08-24 12:03:42 +0100 | [diff] [blame] | 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 | #include "MeanStdDev.h" |
| 25 | |
| 26 | namespace arm_compute |
| 27 | { |
| 28 | namespace test |
| 29 | { |
| 30 | namespace validation |
| 31 | { |
| 32 | namespace reference |
| 33 | { |
| 34 | template <typename T> |
| 35 | std::pair<float, float> mean_and_standard_deviation(const SimpleTensor<T> &in) |
| 36 | { |
| 37 | const int num_elements = in.num_elements(); |
| 38 | |
| 39 | // Calculate mean |
| 40 | float mean = std::accumulate(in.data(), in.data() + num_elements, 0.f) / num_elements; |
| 41 | |
| 42 | // Calculate standard deviation |
| 43 | float std_dev = std::accumulate(in.data(), in.data() + num_elements, 0.f, [&mean](float a, float b) |
| 44 | { |
| 45 | return a + (mean - b) * (mean - b); |
| 46 | }); |
| 47 | |
| 48 | std_dev = std::sqrt(std_dev / num_elements); |
| 49 | |
| 50 | return std::make_pair(mean, std_dev); |
| 51 | } |
| 52 | |
| 53 | template std::pair<float, float> mean_and_standard_deviation(const SimpleTensor<uint8_t> &in); |
Michalis Spyrou | d1794eb | 2018-06-15 16:15:26 +0100 | [diff] [blame] | 54 | template std::pair<float, float> mean_and_standard_deviation(const SimpleTensor<half> &in); |
| 55 | template std::pair<float, float> mean_and_standard_deviation(const SimpleTensor<float> &in); |
John Richardson | 338b195 | 2017-08-24 12:03:42 +0100 | [diff] [blame] | 56 | } // namespace reference |
| 57 | } // namespace validation |
| 58 | } // namespace test |
| 59 | } // namespace arm_compute |