--- ray/src/ot/o_face.c	2003/02/22 02:07:26	2.2
+++ ray/src/ot/o_face.c	2004/03/27 12:41:45	2.4
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: o_face.c,v 2.2 2003/02/22 02:07:26 greg Exp $";
+static const char	RCSid[] = "$Id: o_face.c,v 2.4 2004/03/27 12:41:45 schorsch Exp $";
 #endif
 /*
  *  o_face.c - routines for creating octrees for polygonal faces.
@@ -37,10 +37,12 @@ static const char	RCSid[] = "$Id: o_face.c,v 2.2 2003/
  *	5) If test 4 fails, we have no intersection.
  */
 
-
-o_face(o, cu)			/* determine if face intersects cube */
-OBJREC  *o;
-CUBE  *cu;
+/* XXX this is extern, but not declared in any header file yet */
+int
+o_face(			/* determine if face intersects cube */
+	OBJREC  *o,
+	CUBE  *cu
+)
 {
 	FVECT  cumin, cumax;
 	FVECT  v1, v2;
@@ -59,7 +61,7 @@ CUBE  *cu;
 
 	vloc = ABOVE | BELOW;		/* check vertices */
 	for (i = 0; i < f->nv; i++)
-		if (j = plocate(VERTEX(f,i), cumin, cumax))
+		if ( (j = plocate(VERTEX(f,i), cumin, cumax)) )
 			vloc &= j;
 		else
 			return(O_HIT);	/* vertex inside */