benchmark  1.7.0
statistics.h
1 // Copyright 2016 Ismael Jimenez Martinez. All rights reserved.
2 // Copyright 2017 Roman Lebedev. All rights reserved.
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 
16 #ifndef STATISTICS_H_
17 #define STATISTICS_H_
18 
19 #include <vector>
20 
21 #include "benchmark/benchmark.h"
22 
23 namespace benchmark {
24 
25 // Return a vector containing the mean, median and standard devation information
26 // (and any user-specified info) for the specified list of reports. If 'reports'
27 // contains less than two non-errored runs an empty vector is returned
28 BENCHMARK_EXPORT
29 std::vector<BenchmarkReporter::Run> ComputeStats(
30  const std::vector<BenchmarkReporter::Run>& reports);
31 
32 BENCHMARK_EXPORT
33 double StatisticsMean(const std::vector<double>& v);
34 BENCHMARK_EXPORT
35 double StatisticsMedian(const std::vector<double>& v);
36 BENCHMARK_EXPORT
37 double StatisticsStdDev(const std::vector<double>& v);
38 BENCHMARK_EXPORT
39 double StatisticsCV(const std::vector<double>& v);
40 
41 } // end namespace benchmark
42 
43 #endif // STATISTICS_H_