/*
 * Revision Control Information
 *
 * $Source: /vol/opua/opua2/sis/sis-1.1/common/src/sis/retime/RCS/retime_int.h,v $
 * $Author: sis $
 * $Revision: 1.2 $
 * $Date: 1992/05/06 19:00:16 $
 *
 */
#include "retime.h"

#define RETIME_SLOT undef1
#define RETIME(node)     ((int) node->RETIME_SLOT)

#define re_empty_network(n) ((network_num_po(n)+network_num_pi(n)) == 0)

typedef struct class_data re_class_t;
struct class_data{
    array_t *gates;	/* Array of type (lib_gate_t *) */
    array_t *delay;	/* Array of type double		*/
    };

typedef struct wd_struct wd_t;
struct wd_struct{
	int w;
	int d;
};

/* Global variables */
extern int 		retime_debug;

/* Extern function declarations */
extern void		re_computeWD();
extern void		retime_dump_graph();
extern void		retime_single_node();
extern void		re_graph_add_node();
extern void		re_evaluate_delay();
extern int		re_simplx();
extern int		retime_check_graph();
extern int 		retime_min_register();		/* re_minreg.c */
extern int		retime_nanni_routine();		/* re_nanni.c */
extern int		retime_lies_routine();		/* re_milp.c */
extern int		retime_update_init_states();
extern int		retime_get_dff_info();
extern int 		retime_get_clock_data();
extern node_t 		*retime_network_latch_end();	/* utility */
extern double 		retime_simulate_gate();
extern double 		retime_cycle_lower_bound();
extern array_t 		*re_graph_dfs();
extern array_t 		*re_graph_dfs_from_input();
extern re_node		*retime_alloc_node();
extern re_edge		*re_graph_add_edge();

#define RETIME_DEFAULT_REG_AREA 1.0	/* Area of a latch */
#define RETIME_DEFAULT_REG_DELAY 0.0	/* Delay through a latch */
#define MAX_LATCH_TO_INITIALIZE 16 /* No of latches acceptable to extract STG */

#define RETIME_NOT_SET -1
#define RETIME_USER_NOT_SET -100000.0
#define RETIME_TEST_NOT_SET -50000.0	/* Half of the USER_NOT_SET value */

#define RETIME_DEF_TOL	0.1	/* Tolerence of the binary search */

#define POS_LARGE 10000
#define NEG_LARGE -10000