--- ray/src/px/ra_skel.c	1991/12/19 14:52:19	2.2
+++ ray/src/px/ra_skel.c	1993/06/04 14:47:53	2.5
@@ -1,3 +1,5 @@
+/* Copyright (c) 1992 Regents of the University of California */
+
 #ifndef lint
 static char SCCSid[] = "$SunId$ LBL";
 #endif
@@ -17,9 +19,14 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 #include  <stdio.h>
+#include  <math.h>
+#ifdef MSDOS
+#include  <fcntl.h>
+#endif
 #include  "color.h"
 #include  "resolu.h"
 
+extern char  *malloc();
 
 double	gamma = 2.2;			/* gamma correction */
 
@@ -71,6 +78,10 @@ char  *argv[];
 				progname, argv[i+1]);
 		exit(1);
 	}
+#ifdef MSDOS
+	setmode(fileno(stdin), O_BINARY);
+	setmode(fileno(stdout), O_BINARY);
+#endif
 	setcolrgam(gamma);		/* set up gamma correction */
 	if (reverse) {
 					/* get their image resolution */