typedef struct st_dgen dgen;struct st_dgen {	GENcircuit	*ckt;	wordlist	*dev_list;	int		flags;	int		dev_type_no;	int		dev;	GENinstance	*instance;	GENmodel	*model;};#define	DGEN_ALL	0x00e#define	DGEN_TYPE	0x002#define	DGEN_MODEL	0x004#define	DGEN_INSTANCE	0x008#define	DGEN_INIT	0x010#define	DGEN_DEFDEVS	0x020#define	DGEN_ALLDEVS	0x040#define	DGEN_DEFPARAMS	0x001#define	DGEN_ALLPARAMS	0x002extern	dgen	*dgen_init( );