/* { dg-do compile } */
/* { dg-options "-O3" } */

typedef long unsigned int size_t;
typedef struct
{
}
box;
typedef struct
{
}
textpara_t;
typedef struct _dtlink_s Dtlink_t;
typedef struct _dtdisc_s Dtdisc_t;
typedef struct _dtmethod_s Dtmethod_t;
typedef struct _dt_s Dt_t;
typedef void *(*Dtmemory_f) (Dt_t *, void *, size_t, Dtdisc_t *);
typedef void *(*Dtsearch_f) (Dt_t *, void *, int);
typedef void *(*Dtmake_f) (Dt_t *, void *, Dtdisc_t *);
typedef void (*Dtfree_f) (Dt_t *, void *, Dtdisc_t *);
typedef int (*Dtcompar_f) (Dt_t *, void *, void *, Dtdisc_t *);
typedef unsigned int (*Dthash_f) (Dt_t *, void *, Dtdisc_t *);
typedef int (*Dtevent_f) (Dt_t *, int, void *, Dtdisc_t *);
struct _dtlink_s
{
  Dtlink_t *right;
};
struct _dtdisc_s
{
  int key;
  int size;
  int link;
  Dtmake_f makef;
  Dtfree_f freef;
  Dtcompar_f comparf;
  Dthash_f hashf;
  Dtmemory_f memoryf;
  Dtevent_f eventf;
};
struct _dt_s
{
  Dtsearch_f searchf;
};
extern Dtmethod_t *Dtobag;
extern Dt_t *dtopen (Dtdisc_t *, Dtmethod_t *);
extern Dtlink_t *dtflatten (Dt_t *);
typedef struct Agobj_s Agobj_t;
typedef struct Agraph_s Agraph_t;
typedef struct Agnode_s Agnode_t;
typedef struct Agedge_s Agedge_t;
typedef struct Agdesc_s Agdesc_t;
typedef struct Agdisc_s Agdisc_t;
typedef struct Agrec_s Agrec_t;
struct Agobj_s
{
  Agrec_t *data;
};
struct Agdesc_s
{
};
extern Agraph_t *agopen (char *name, Agdesc_t desc, Agdisc_t * disc);
extern Agnode_t *agfstnode (Agraph_t * g);
extern Agnode_t *agnxtnode (Agraph_t * g, Agnode_t * n);
extern Agedge_t *agedge (Agraph_t * g, Agnode_t * t, Agnode_t * h, char *name,
			 int createflag);
extern Agedge_t *agfstout (Agraph_t * g, Agnode_t * n);
extern Agedge_t *agnxtout (Agraph_t * g, Agedge_t * e);
extern Agdesc_t Agdirected, Agstrictdirected, Agundirected,
  Agstrictundirected;
typedef struct Agraph_s graph_t;
typedef struct Agnode_s node_t;
typedef struct Agedge_s edge_t;
typedef union inside_t
{
  unsigned short minlen;
}
Agedgeinfo_t;
extern void *gmalloc (size_t);
typedef enum
{ AM_NONE, AM_VOR, AM_SCALE, AM_NSCALE, AM_SCALEXY, AM_PUSH, AM_PUSHPULL,
    AM_ORTHO, AM_ORTHO_YX, AM_ORTHOXY, AM_ORTHOYX, AM_PORTHO, AM_PORTHO_YX,
    AM_PORTHOXY, AM_PORTHOYX, AM_COMPRESS, AM_VPSC, AM_IPSEP, AM_PRISM }
adjust_mode;
typedef struct nitem
{
  Dtlink_t link;
  int val;
  node_t *cnode;
  box bb;
}
nitem;
typedef int (*distfn) (box *, box *);
typedef int (*intersectfn) (nitem *, nitem *);
int agnnodes (graph_t *);
int overlaps (nitem *, int);
static int
cmpitem (Dt_t * d, int *p1, int *p2, Dtdisc_t * disc)
{
}
static Dtdisc_t constr =
  { __builtin_offsetof (nitem, val), sizeof (int), __builtin_offsetof (nitem,
								       link),
((Dtmake_f) 0), ((Dtfree_f) 0), (Dtcompar_f) cmpitem, ((Dthash_f) 0), ((Dtmemory_f) 0),
((Dtevent_f) 0) };
static int
distX (box * b1, box * b2)
{
}

static int
intersectY0 (nitem * p, nitem * q)
{
}

static int
intersectY (nitem * p, nitem * q)
{
}

static void
mapGraphs (graph_t * g, graph_t * cg, distfn dist)
{
  node_t *n;
  edge_t *e;
  edge_t *ce;
  node_t *t;
  node_t *h;
  nitem *tp;
  nitem *hp;
  int delta;
  for (n = agfstnode (g); n; n = agnxtnode (g, n))
    {
      for (e = agfstout (g, n); e; e = agnxtout (g, e))
	{
	  delta = dist (&tp->bb, &hp->bb);
	  ce = agedge (cg, t, h, ((void *) 0), 1);
	  if ((((Agedgeinfo_t *) (((Agobj_t *) (ce))->data))->minlen) < delta)
	    {
	      if ((((Agedgeinfo_t *) (((Agobj_t *) (ce))->data))->minlen) ==
		  0.0)
		{
		}
	    }
	}
    }
}

static graph_t *
mkNConstraintG (graph_t * g, Dt_t * list, intersectfn intersect, distfn dist)
{
  nitem *p;
  nitem *nxp;
  edge_t *e;
  graph_t *cg = agopen ("cg", Agstrictdirected, ((Agdisc_t *) 0));
  for (p = (nitem *) dtflatten (list); p;
       p = (nitem *) (((Dtlink_t *) ((Dtlink_t *) p))->right))
    {
      for (nxp = (nitem *) (((Dtlink_t *) ((Dtlink_t *) p))->right); nxp;
	   nxp = (nitem *) (((Dtlink_t *) ((Dtlink_t *) nxp))->right))
	{
	  if (intersect (p, nxp))
	    {
	      e = agedge (cg, p->cnode, nxp->cnode, ((void *) 0), 1);
	    }
  }} for (p = (nitem *) dtflatten (list); p;
	    p = (nitem *) (((Dtlink_t *) ((Dtlink_t *) p))->right))
    {
    }
}

static graph_t *
mkConstraintG (graph_t * g, Dt_t * list, intersectfn intersect, distfn dist)
{
  graph_t *vg;
  graph_t *cg = agopen ("cg", Agstrictdirected, ((Agdisc_t *) 0));
  mapGraphs (vg, cg, dist);
}

static void
constrainX (graph_t * g, nitem * nlist, int nnodes, intersectfn ifn,
	    int ortho)
{
  Dt_t *list = dtopen (&constr, Dtobag);
  nitem *p = nlist;
  graph_t *cg;
  int i;
  for (i = 0; i < nnodes; i++)
    {
      (*(((Dt_t *) (list))->searchf)) ((list), (void *) (p), 0000001);
      p++;
  } if (ortho)
    cg = mkConstraintG (g, list, ifn, distX);
  else
    cg = mkNConstraintG (g, list, ifn, distX);
}

int
cAdjust (graph_t * g, int mode)
{
  int ret, i, nnodes = agnnodes (g);
  nitem *nlist = (nitem *) gmalloc ((nnodes) * sizeof (nitem));
  node_t *n;
  for (n = agfstnode (g); n; n = agnxtnode (g, n))
    {
    }
  if (overlaps (nlist, nnodes))
    {
      switch ((adjust_mode) mode)
	{
	case AM_ORTHOXY:
	  constrainX (g, nlist, nnodes, intersectY, 1);
	case AM_ORTHO:
	  constrainX (g, nlist, nnodes, intersectY0, 1);
	  constrainX (g, nlist, nnodes, intersectY, 1);
	case AM_PORTHO:
	default:
	  constrainX (g, nlist, nnodes, intersectY0, 0);
	}
    }
}
