histogram.h

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// Xerus - A General Purpose Tensor Library
// Copyright (C) 2014-2017 Benjamin Huber and Sebastian Wolf. 
// 
// Xerus is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
// 
// Xerus is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// 
// You should have received a copy of the GNU Affero General Public License
// along with Xerus. If not, see <http://www.gnu.org/licenses/>.
//
// For further information on Xerus visit https://libXerus.org 
// or contact us at contact@libXerus.org.

#pragma once 

#include <string>
#include <fstream>
#include <map>

namespace xerus { 
    namespace misc {

        class LogHistogram {
        public:
            double base;
            std::map<int, size_t> buckets;
            size_t totalCount;
            
            explicit LogHistogram(const double _base);
            
            LogHistogram &operator+=(const LogHistogram &_other);
            void add(double _value, size_t _count = 1);
            
            static LogHistogram read_from_file(const std::string &_fileName);
            void dump_to_file(const std::string &_fileName) const;
        };
    }
}