--- ray/src/rt/raytrace.c	1993/02/23 13:57:11	2.4
+++ ray/src/rt/raytrace.c	1993/03/08 12:37:30	2.5
@@ -34,6 +34,8 @@ OBJREC  Lamb = {
 	{0, 5, NULL, Lambfa}, NULL,
 };					/* a Lambertian surface */
 
+static int  raymove(), checkset(), checkhit();
+
 #define  MAXLOOP	128		/* modifier loop detection */
 
 #define  RAYHIT		(-1)		/* return value for intercepted ray */