| /* |
| * Copyright (c) 2018 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 "InstrumentsStats.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace framework |
| { |
| InstrumentsStats::InstrumentsStats(const std::vector<Measurement> &measurements) |
| : _min(nullptr), _max(nullptr), _median(nullptr), _mean(measurements.begin()->value().is_floating_point), _stddev(0.0) |
| { |
| auto cmp_measurements = [](const Measurement & a, const Measurement & b) |
| { |
| return a.value() < b.value(); |
| }; |
| |
| auto add_measurements = [](Measurement::Value a, const Measurement & b) |
| { |
| return a + b.value(); |
| }; |
| |
| //Calculate min & max |
| const auto values = std::minmax_element(measurements.begin(), measurements.end(), cmp_measurements); |
| _min = &(*values.first); |
| _max = &(*values.second); |
| |
| // Calculate the median value |
| auto copy = measurements; |
| std::nth_element(copy.begin(), copy.begin() + (copy.size() / 2), copy.end(), cmp_measurements); |
| _median = ©[copy.size() / 2]; |
| |
| Measurement::Value sum_values = std::accumulate(measurements.begin(), measurements.end(), Measurement::Value(_min->value().is_floating_point), add_measurements); |
| |
| // Calculate the relative standard deviation |
| _mean = sum_values / measurements.size(); |
| std::vector<Measurement::Value> diff(measurements.size(), _min->value().is_floating_point); |
| std::transform(measurements.begin(), measurements.end(), diff.begin(), [&](const Measurement & x) |
| { |
| return x.value() - _mean; |
| }); |
| auto sq_sum = std::inner_product(diff.begin(), diff.end(), diff.begin(), Measurement::Value(_min->value().is_floating_point)); |
| auto variance = sq_sum / measurements.size(); |
| _stddev = Measurement::Value::relative_standard_deviation(variance, _mean); |
| } |
| } // namespace framework |
| } // namespace test |
| } // namespace arm_compute |