--- ray/src/px/pcomb.c	1992/09/08 10:35:05	2.6
+++ ray/src/px/pcomb.c	1992/10/02 16:22:51	2.8
@@ -12,11 +12,17 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include <stdio.h>
 
+#ifdef MSDOS
+#include <fcntl.h>
+#endif
+
+#include <math.h>
+
 #include <errno.h>
 
 #include "color.h"
 
-#include  "resolu.h"
+#include "resolu.h"
 
 #include "calcomp.h"
 
@@ -64,7 +70,9 @@ int	wrongformat = 0;
 
 FILE	*popen();
 
+extern char	*emalloc();
 
+
 main(argc, argv)
 int	argc;
 char	*argv[];
@@ -72,6 +80,12 @@ char	*argv[];
 	int	original;
 	double	f;
 	int	a, i;
+#ifdef MSDOS
+	extern int  _fmode;
+	_fmode = O_BINARY;
+	setmode(fileno(stdin), O_BINARY);
+	setmode(fileno(stdout), O_BINARY);
+#endif
 						/* scan options */
 	for (a = 1; a < argc; a++) {
 		if (argv[a][0] == '-')
@@ -335,7 +349,6 @@ combine()			/* combine pictures */
 
 advance()			/* read in data for next scanline */
 {
-	extern double  fabs();
 	int	ytarget;
 	register COLOR	*st;
 	register int	i, j;