--- ray/src/px/ra_rgbe.c	1992/09/21 12:15:13	2.3
+++ ray/src/px/ra_rgbe.c	1993/11/18 09:55:20	2.6
@@ -9,13 +9,14 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 #include  <stdio.h>
+#include  <math.h>
+#include  "color.h"
+#include  "resolu.h"
+
 #ifdef MSDOS
 #include  <fcntl.h>
 #endif
 
-#include  "color.h"
-#include  "resolu.h"
-
 extern char  *malloc();
 
 int  bradj = 0;				/* brightness adjustment */
@@ -63,7 +64,7 @@ char  *argv[];
 		exit(1);
 	}
 	if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) {
-		fprintf(stderr, "can't open output \"%s\"\n",
+		fprintf(stderr, "%s: can't open output \"%s\"\n",
 				progname, argv[i+1]);
 		exit(1);
 	}
@@ -89,11 +90,9 @@ char  *err;
 
 transfer()		/* transfer Radiance picture */
 {
-	extern double	pow();
 	int	order;
 	int	xmax, ymax;
 	COLR	*scanin;
-	register int	x;
 	int	y;
 				/* get header info. */
 	if (checkheader(stdin, COLRFMT, stdout) < 0 ||
@@ -127,7 +126,7 @@ transfer()		/* transfer Radiance picture */
 		else
 			fwritecolrs(scanin, xmax, stdout);
 		if (ferror(stdout))
-			quiterr("error writing rasterfile");
+			quiterr("error writing output picture");
 	}
 						/* free scanline */
 	free((char *)scanin);