--- ray/src/px/pinterp.c	2003/07/27 22:12:03	2.37
+++ ray/src/px/pinterp.c	2004/01/02 12:47:01	2.40
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: pinterp.c,v 2.37 2003/07/27 22:12:03 schorsch Exp $";
+static const char	RCSid[] = "$Id: pinterp.c,v 2.40 2004/01/02 12:47:01 schorsch Exp $";
 #endif
 /*
  * Interpolate and extrapolate pictures with different view parameters.
@@ -12,6 +12,7 @@ static const char	RCSid[] = "$Id: pinterp.c,v 2.37 200
 #include <ctype.h>
 #include <string.h>
 
+#include "platform.h"
 #include "standard.h"
 #include "rtprocess.h" /* Windows: must come before color.h */
 #include "view.h"
@@ -93,7 +94,9 @@ int	queuesiz = 0;			/* number of pixels pending */
 
 extern double	movepixel();
 
+static gethfunc headline;
 
+
 main(argc, argv)			/* interpolate pictures */
 int	argc;
 char	*argv[];
@@ -326,9 +329,11 @@ userr:
 }
 
 
-int
-headline(s)				/* process header string */
-char	*s;
+static int
+headline(				/* process header string */
+	char	*s,
+	void	*p
+)
 {
 	char	fmt[32];
 
@@ -491,7 +496,8 @@ char	*pfile, *zspec;
 			exit(1);
 		}
 	if (zfd != -1 && lseek(zfd,
-			(off_t)ylim.min*scanlen(&tresolu)*sizeof(float), 0) < 0)
+			(off_t)ylim.min*scanlen(&tresolu)*sizeof(float),
+			SEEK_SET) < 0)
 		syserror(zspec);
 					/* load image */
 	for (y = ylim.min; y <= ylim.max; y++) {
@@ -759,7 +765,7 @@ int	zfd;
 	for (y = step - 1; y < numscans(&tresolu); y += step) {
 		if (zfd != -1) {
 			if (lseek(zfd, (off_t)y*scanlen(&tresolu)*sizeof(float),
-					0) < 0)
+					SEEK_SET) < 0)
 				syserror("lseek");
 			if (read(zfd, (char *)zline,
 					scanlen(&tresolu)*sizeof(float))