#ifndef _CHULL_H_
#define _CHULL_H_

typedef struct {
	/* 2 vector describing a point in the plane */

	double x;
	double y;
} VECT2;

typedef struct _POINT2 {
	/* 2 vector with linked list support attached */

	struct _POINT2 *next;
	struct _POINT2 *prev;
	VECT2 p;
} POINT2;

#endif


