// Source: "Software Design ...", John A Robinson, Newnes, 2004, page 323.
// Header for medianfilter class, created Thu Aug 28 12:42:56 2003
// Revised Aug 28
// Version 0.1
// John Robinson

#ifndef medianfilter_H
#define medianfilter_H

typedef double itemtype;

class medianfilter {
	class bufitem *buf;
	int length;
	int nextinsertion;	// Index into circular buffer
	class bufitem *medianloc;	// Not index but pointer
public:
	medianfilter (const int len = 15);
	~medianfilter ();
	itemtype addnext(const itemtype newval); 
			// Returns value displaced from buffer
	itemtype getmedian() const;
	void print() const;// Debug function to show current state of buffer
};


#endif