circular_buffer.h

#ifndef CIRCULAR_BUFFER_H
#define CIRCULAR_BUFFER_H

#include <stdlib.h>

template <class T>
class CircularBuffer
{
private:
	T* data;
	size_t cp;
	size_t sz;
	size_t idx;

public:
	CircularBuffer(size_t capacity)
	{
		cp = capacity;
		data = new T[cp];
		sz = 0;
		idx = 0;
	}
	
	~CircularBuffer()
	{
		delete[] data;
	}
	
	void add(T element)
	{
		data[idx] = element;
	
		idx++;
		idx %= cp;
	
		if (sz < cp)
			sz++;
	}
	
	size_t capacity()
	{
		return cp;
	}
	
	size_t size()
	{
		return sz;
	}
	
	T sum()
	{
		T sum = static_cast<T>(0);
		for (size_t i = 0; i < sz; i++)
		{
			sum += data[i];
		}
		return sum;
	}
};

#endif // CIRCULAR_BUFFER_H