--- ray/src/util/glarendx.c	1994/03/24 11:06:59	2.4
+++ ray/src/util/glarendx.c	1998/10/27 08:47:17	2.6
@@ -25,7 +25,6 @@ static char SCCSid[] = "$SunId$ LBL";
 #include "standard.h"
 #include "view.h"
  
-extern double	erfc();
  
 double	posindex();
  
@@ -128,6 +127,7 @@ userr:
 }
  
  
+int
 headline(s)			/* get line from header */
 char	*s;
 {
@@ -141,6 +141,7 @@ char	*s;
 		formatval(fmt, s);
 		wrongformat = strcmp(fmt, "ascii");
 	}
+	return(0);
 }
  
  
@@ -407,8 +408,6 @@ struct glare_dir	*gd;
 }
  
  
-extern double	erf(), erfc();
- 
 #ifndef M_SQRT2
 #define	M_SQRT2	1.41421356237309504880
 #endif
@@ -420,6 +419,7 @@ double
 guth_vcp(gd)		/* compute Guth visual comfort probability */
 struct glare_dir	*gd;
 {
+	extern double	erfc();
 	double	dgr;
  
 	dgr = guth_dgr(gd);