--- ray/src/hd/sm_qtree.h	2003/02/22 02:07:25	3.13
+++ ray/src/hd/sm_qtree.h	2003/08/30 08:17:32	3.17
@@ -1,10 +1,16 @@
-/* RCSid: $Id: sm_qtree.h,v 3.13 2003/02/22 02:07:25 greg Exp $ */
+/* RCSid: $Id: sm_qtree.h,v 3.17 2003/08/30 08:17:32 schorsch Exp $ */
 /*
  *  sm_qtree.h - header file for routines using spherical quadtrees.
  *
  *    adapted from octree.h 
  */
+#ifndef _RAD_SM_QTREE_H_
+#define _RAD_SM_QTREE_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
  *	An quadtree is expressed as an integer which is either
  *	an index to 4 other nodes, the empty tree, or an index
@@ -42,10 +48,10 @@ typedef struct _FUNC {
 
 
 #ifndef  QT_MAX_BLK
-#ifdef  BIGMEM
-#define  QT_MAX_BLK	16383		/* maximum quadtree block */
-#else
+#ifdef  SMLMEM
 #define  QT_MAX_BLK	2047		/* maximum quadtree block */
+#else
+#define  QT_MAX_BLK	16383		/* maximum quadtree block */
 #endif
 #endif
 
@@ -105,11 +111,11 @@ typedef struct _FUNC {
 extern QUADTREE  qtnewleaf(), qtaddelem(), qtdelelem();
 
 extern QUADTREE  *quad_block[QT_MAX_BLK];	/* quadtree blocks */
-extern int4  *quad_flag;			/* zeroeth quadtree flag */
+extern int32  *quad_flag;			/* zeroeth quadtree flag */
 
 extern OBJECT	**qtsettab;		/* quadtree leaf node table */
 extern QUADTREE  qtnumsets;		/* number of used set indices */
-extern int4   *qtsetflag;
+extern int32   *qtsetflag;
 #ifdef DEBUG
 extern OBJECT	*qtqueryset();
 #else
@@ -153,7 +159,8 @@ extern QUADTREE qtRoot_visit_tri_edges();
 extern QUADTREE qtRoot_trace_ray();
 
 
-
-
-
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_SM_QTREE_H_ */