--- ray/src/hd/rhd_qtree2c.c	2004/01/01 11:21:55	3.3
+++ ray/src/hd/rhd_qtree2c.c	2018/10/05 19:19:16	3.5
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rhd_qtree2c.c,v 3.3 2004/01/01 11:21:55 schorsch Exp $";
+static const char	RCSid[] = "$Id: rhd_qtree2c.c,v 3.5 2018/10/05 19:19:16 greg Exp $";
 #endif
 /*
  * Quadtree display support routines for cone output.
@@ -9,14 +9,14 @@ static const char	RCSid[] = "$Id: rhd_qtree2c.c,v 3.3 
 #include "rhd_qtree.h"
 
 static void redraw(RTREE *tp, int x0, int y0, int x1, int y1, int l[2][2]);
-static void cpaint(BYTE rgb[3], float *p, int x0, int y0, int x1, int y1);
-static void update(BYTE ca[3], RTREE *tp, int x0, int y0, int x1, int y1);
+static void cpaint(uby8 rgb[3], float *p, int x0, int y0, int x1, int y1);
+static void update(uby8 ca[3], RTREE *tp, int x0, int y0, int x1, int y1);
 
 
 
 static void
 redraw(	/* mark portion of a tree for redraw */
-	register RTREE	*tp,
+	RTREE	*tp,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -26,7 +26,7 @@ redraw(	/* mark portion of a tree for redraw */
 {
 	int	quads = CH_ANY;
 	int	mx, my;
-	register int	i;
+	int	i;
 					/* compute midpoint */
 	mx = (x0 + x1) >> 1;
 	my = (y0 + y1) >> 1;
@@ -50,8 +50,8 @@ redraw(	/* mark portion of a tree for redraw */
 
 static void
 cpaint(	/* paint a cone within a rectangle */
-	BYTE	rgb[3],
-	register float	*p,
+	uby8	rgb[3],
+	float	*p,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -95,8 +95,8 @@ cpaint(	/* paint a cone within a rectangle */
 
 static void
 update(	/* update tree display as needed */
-	BYTE	ca[3],		/* returned average color */
-	register RTREE	*tp,
+	uby8	ca[3],		/* returned average color */
+	RTREE	*tp,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -104,11 +104,11 @@ update(	/* update tree display as needed */
 )
 {
 	int	csm[3], nc;
-	register BYTE	*cp;
-	BYTE	rgb[3];
+	uby8	*cp;
+	uby8	rgb[3];
 	int	gaps = 0;
 	int	mx, my;
-	register int	i;
+	int	i;
 					/* compute midpoint */
 	mx = (x0 + x1) >> 1;
 	my = (y0 + y1) >> 1;
@@ -149,7 +149,7 @@ update(	/* update tree display as needed */
 }
 
 
-extern void
+void
 qtRedraw(	/* redraw part or all of our screen */
 	int	x0,
 	int	y0,
@@ -168,10 +168,10 @@ qtRedraw(	/* redraw part or all of our screen */
 }
 
 
-extern void
+void
 qtUpdate(void)			/* update our tree display */
 {
-	BYTE	ca[3];
+	uby8	ca[3];
 
 	if (is_stump(&qtrunk))
 		return;