/* the possible types for a gate */
#define  AND			0
#define  NAND			1
#define  OR			2
#define  NOR			3
#define  XOR			4
#define  XNOR			5
#define  BUFF			6
#define  NOT			7
#define  DFF			9

#define  INPUT			100
#define  OUTPUT			101

#define  NAME_LEN	50
#define  TYPE_LEN	10
#define  MAX_FANIN	4