--- ray/src/rt/func.c	2004/03/30 16:13:01	2.22
+++ ray/src/rt/func.c	2011/02/22 16:45:12	2.24
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: func.c,v 2.22 2004/03/30 16:13:01 schorsch Exp $";
+static const char	RCSid[] = "$Id: func.c,v 2.24 2011/02/22 16:45:12 greg Exp $";
 #endif
 /*
  *  func.c - interface to calcomp functions.
@@ -7,8 +7,6 @@ static const char	RCSid[] = "$Id: func.c,v 2.22 2004/0
 
 #include "copyright.h"
 
-#include <math.h>
-
 #include  "ray.h"
 #include  "paths.h"
 #include  "otypes.h"
@@ -173,7 +171,7 @@ setfunc(			/* set channels for function call */
 	register RAY  *r
 )
 {
-	static unsigned long  lastrno = ~0;
+	static RNUMBER  lastrno = ~0;
 	register MFUNC  *f;
 					/* get function */
 	if ((f = (MFUNC *)m->os) == NULL)