--- ray/src/ot/sphere.c	1991/10/23 13:43:34	1.4
+++ ray/src/ot/sphere.c	2004/03/27 12:41:45	2.4
@@ -1,9 +1,6 @@
-/* Copyright (c) 1986 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: sphere.c,v 2.4 2004/03/27 12:41:45 schorsch Exp $";
 #endif
-
 /*
  *  sphere.c - routines for creating octrees for spheres.
  *
@@ -53,13 +50,16 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 
-o_sphere(o, cu)			/* determine if sphere intersects cube */
-OBJREC  *o;
-register CUBE  *cu;
+/* XXX o_sphere() is extern, but not declared in any header file */
+int
+o_sphere(			/* determine if sphere intersects cube */
+	OBJREC  *o,
+	register CUBE  *cu
+)
 {
 	FVECT  v1;
 	double  d1, d2;
-	register FLOAT  *fa;
+	register RREAL  *fa;
 	register int  i;
 #define  cent		fa
 #define  rad		fa[3]