// BEGIN_COPYRIGHT // // Copyright (C) 1999 Allen Akin All Rights Reserved. // // 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 ALLEN AKIN 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. // // END_COPYRIGHT // stats.h: simple statistics-gathering utilities for glean // These are rather simplistic. For more robust implementations, consider // using Numerical Recipes. #ifndef __stats_h__ #define __stats_h__ #include #ifdef __WIN__ using namespace std; #endif #if defined( __WIN__ ) #undef min #undef max #endif namespace GLEAN { class BasicStats { int _n; double _min; double _max; double _sum; double _sum2; public: void init(); inline int n() const {return _n;} inline double min() const {return _min;} inline double max() const {return _max;} inline double sum() const {return _sum;} inline double sum2() const {return _sum2;} double mean() const; double variance() const; double deviation() const; inline void sample(double d) { ++_n; if (d < _min) _min = d; if (d > _max) _max = d; _sum += d; _sum2 += d*d; } BasicStats() {init();} template BasicStats(std::vector& v) { init(); for (typename std::vector::const_iterator p = v.begin(); p < v.end(); ++p) sample(*p); } }; // class BasicStats } // namespace GLEAN #endif // __stats_h__