| /* |
| * Copyright 2012, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef TIME_SERIES_H_ |
| |
| #define TIME_SERIES_H_ |
| |
| #include <sys/types.h> |
| |
| namespace android { |
| |
| struct TimeSeries { |
| TimeSeries(); |
| |
| void add(double val); |
| |
| double mean() const; |
| double sdev() const; |
| |
| private: |
| enum { |
| kHistorySize = 20 |
| }; |
| double mValues[kHistorySize]; |
| |
| size_t mCount; |
| double mSum; |
| }; |
| |
| } // namespace android |
| |
| #endif // TIME_SERIES_H_ |
| |