--- ray/src/cv/thf2rad.c	1991/11/12 17:01:57	2.1
+++ ray/src/cv/thf2rad.c	1991/12/19 15:05:54	2.2
@@ -17,6 +17,10 @@ static char SCCSid[] = "$SunId$ LBL";
 #define MAXSTR		128		/* maximum string or id length */
 #define MAXPTS		2048		/* maximum points per object */
 
+#ifndef atof
+extern double  atof();
+#endif
+
 typedef struct {
 	double	x, y, z;
 } POINT;
@@ -28,7 +32,6 @@ main(argc, argv)
 int	argc;
 char	*argv[];
 {
-	extern double	atof();
 	char	*name = NULL;
 	int	an;