--- ray/src/px/aedimage.c	1991/11/11 14:38:48	1.11
+++ ray/src/px/aedimage.c	1998/10/27 09:08:25	2.4
@@ -13,6 +13,8 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include  <stdio.h>
 
+#include  <math.h>
+
 #include  <signal.h>
 
 #include  <sys/ioctl.h>
@@ -97,7 +99,6 @@ FILE  *fin;
 extern long  ftell();
 long  scanpos[NROWS];
 
-extern double  atof();
 double  exposure = 1.0;
 int  wrong_fmt = 0;
 
@@ -169,6 +170,7 @@ userr:
 }
 
 
+int
 checkhead(line)				/* deal with line from header */
 char  *line;
 {
@@ -180,6 +182,7 @@ char  *line;
 		formatval(fmt, line);
 		wrong_fmt = strcmp(fmt, COLRFMT);
 	}
+	return(0);
 }
 
 
@@ -520,7 +523,6 @@ int  offset[3];
 picreadcm(map)			/* do gamma correction */
 colormap  map;
 {
-	extern double  pow();
 	register int  i, val;
 
 	for (i = 0; i < 256; i++) {