--- ray/src/hd/viewbeams.c	2003/06/20 00:25:49	3.4
+++ ray/src/hd/viewbeams.c	2018/10/05 19:19:16	3.8
@@ -1,10 +1,12 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: viewbeams.c,v 3.4 2003/06/20 00:25:49 greg Exp $";
+static const char	RCSid[] = "$Id: viewbeams.c,v 3.8 2018/10/05 19:19:16 greg Exp $";
 #endif
 /*
  * Convert view to beam list.
  */
 
+#include <string.h>
+
 #include "rholo.h"
 #include "view.h"
 #include "random.h"
@@ -24,11 +26,14 @@ static const char	RCSid[] = "$Id: viewbeams.c,v 3.4 20
 static BEAMLIST	blist;
 
 
-static
-add2blist(hd, bi, nr)			/* add to beam sample list */
-int	hd, bi, nr;
+static void
+add2blist(			/* add to beam sample list */
+	int	hd,
+	int	bi,
+	int	nr
+)
 {
-	register int	i;
+	int	i;
 
 	for (i = blist.nb; i--; )
 		if (blist.bl[i].bi == bi && blist.bl[i].hd == hd) {
@@ -47,10 +52,12 @@ int	hd, bi, nr;
 
 
 int16 *
-viewbeams(vp, hr, vr, blp)		/* convert view into sections/beams */
-VIEW	*vp;
-int	hr, vr;
-BEAMLIST	*blp;
+viewbeams(		/* convert view into sections/beams */
+	VIEW	*vp,
+	int	hr,
+	int	vr,
+	BEAMLIST	*blp
+)
 {
 	static int16	sectlist[HDMAX+1];
 	int16	sectarr[MINRES+1][MINRES+1];
@@ -59,9 +66,9 @@ BEAMLIST	*blp;
 	FVECT	rorg, rdir;
 	int	shr, svr, sampquant;
 	int	v;
-	register int	h, hd;
+	int	h, hd;
 						/* clear section flags */
-	bzero((char *)sectlist, sizeof(sectlist));
+	memset((char *)sectlist, '\0', sizeof(sectlist));
 						/* identify view sections */
 	for (v = 0; v <= MINRES; v++)
 		for (h = 0; h <= MINRES; h++) {
@@ -138,15 +145,16 @@ loopexit:
 							/* add samples */
 			add2blist(hd, hdbindex(hdlist[hd],gc), sampquant);
 		}
-	copystruct(blp, &blist);		/* transfer beam list */
+	*blp = blist;		/* transfer beam list */
 	return(sectlist);			/* all done! */
 }
 
 
 int
-nextview(vp, fp)			/* get next view from fp */
-VIEW	*vp;
-FILE	*fp;
+nextview(			/* get next view from fp */
+	VIEW	*vp,
+	FILE	*fp
+)
 {
 	char	linebuf[256];