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/*
* 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_
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