1 // Copyright 2016 Ismael Jimenez Martinez. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Source project : https://github.com/ismaelJimenez/cpp.leastsq 16 // Adapted to be used with google benchmark 17 18 #ifndef COMPLEXITY_H_ 19 #define COMPLEXITY_H_ 20 21 #include <string> 22 #include <vector> 23 24 #include "benchmark/benchmark_api.h" 25 #include "benchmark/reporter.h" 26 27 namespace benchmark { 28 29 // Return a vector containing the mean and standard devation information for 30 // the specified list of reports. If 'reports' contains less than two 31 // non-errored runs an empty vector is returned 32 std::vector<BenchmarkReporter::Run> ComputeStats( 33 const std::vector<BenchmarkReporter::Run>& reports); 34 35 // Return a vector containing the bigO and RMS information for the specified 36 // list of reports. If 'reports.size() < 2' an empty vector is returned. 37 std::vector<BenchmarkReporter::Run> ComputeBigO( 38 const std::vector<BenchmarkReporter::Run>& reports); 39 40 // This data structure will contain the result returned by MinimalLeastSq 41 // - coef : Estimated coeficient for the high-order term as 42 // interpolated from data. 43 // - rms : Normalized Root Mean Squared Error. 44 // - complexity : Scalability form (e.g. oN, oNLogN). In case a scalability 45 // form has been provided to MinimalLeastSq this will return 46 // the same value. In case BigO::oAuto has been selected, this 47 // parameter will return the best fitting curve detected. 48 49 struct LeastSq { 50 LeastSq() : coef(0.0), rms(0.0), complexity(oNone) {} 51 52 double coef; 53 double rms; 54 BigO complexity; 55 }; 56 57 // Function to return an string for the calculated complexity 58 std::string GetBigOString(BigO complexity); 59 60 } // end namespace benchmark 61 #endif // COMPLEXITY_H_ 62
