--- ray/src/px/protate.c	2003/05/15 05:13:35	2.8
+++ ray/src/px/protate.c	2018/08/02 18:33:46	2.12
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: protate.c,v 2.8 2003/05/15 05:13:35 greg Exp $";
+static const char	RCSid[] = "$Id: protate.c,v 2.12 2018/08/02 18:33:46 greg Exp $";
 #endif
 /*
  * prot.c - program to rotate picture file 90 degrees clockwise.
@@ -7,6 +7,7 @@ static const char	RCSid[] = "$Id: protate.c,v 2.8 2003
  *	2/26/88
  */
 
+#include "platform.h"
 #include "standard.h"
 
 #include "color.h"
@@ -34,33 +35,56 @@ int	nrows;				/* number of rows output at once */
 char	*progname;
 
 short	ordertab[4][2] = {
-	{0,XDECR}, {XDECR,XDECR|YDECR}, {XDECR|YDECR,YDECR}, {YDECR,0}
+	{0,0}, {XDECR,XDECR|YDECR}, {XDECR|YDECR,YDECR}, {YDECR,XDECR}
 };
 
 
-int
-neworder()		/* return corrected order */
+static int neworder(void);
+static void rotatecw(FILE *fp);
+static void rotateccw(FILE *fp);
+
+
+
+static int
+neworder(void)		/* return corrected order */
 {
+	static short    ordercw[8];
 	register int	i;
 
 	if (correctorder)
 		return(order);
-	for (i = 4; i--; )
-		if ((order&~YMAJOR) == ordertab[i][ccw])
-			return(ordertab[i][1-ccw] | ((order&YMAJOR)^YMAJOR));
+	if (!ordercw[0]) {
+		ordercw[YMAJOR|YDECR] = 0;
+		ordercw[0] = YMAJOR|XDECR;
+		ordercw[YMAJOR|XDECR] = XDECR|YDECR;
+		ordercw[XDECR|YDECR] = YMAJOR|YDECR;
+		ordercw[YMAJOR|XDECR|YDECR] = XDECR;
+		ordercw[XDECR] = YMAJOR;
+		ordercw[YMAJOR] = YDECR;
+		ordercw[YDECR] = YMAJOR|XDECR|YDECR;
+	}
+	if (!ccw)
+		return(ordercw[order]);
+	for (i = 8; i--; )
+		if (ordercw[i] == order)
+			return(i);
 	fputs("Order botch!\n", stderr);
 	exit(2);
 }
 
-
-main(argc, argv)
-int	argc;
-char	*argv[];
+int
+main(
+	int	argc,
+	char	*argv[]
+)
 {
-	static char	picfmt[LPICFMT+1] = PICFMT;
+	static char	picfmt[MAXFMTLEN] = PICFMT;
 	int	rval;
 	FILE	*fin;
 
+	SET_DEFAULT_BINARY();
+	SET_FILE_BINARY(stdout);
+
 	progname = argv[0];
 
 	while (argc > 2 && argv[1][0] == '-') {
@@ -118,8 +142,10 @@ userr:
 }
 
 
-rotatecw(fp)			/* rotate picture clockwise */
-FILE	*fp;
+static void
+rotatecw(			/* rotate picture clockwise */
+	FILE	*fp
+)
 {
 	register COLR	*inln;
 	register int	xoff, inx, iny;
@@ -154,8 +180,10 @@ FILE	*fp;
 }
 
 
-rotateccw(fp)			/* rotate picture counter-clockwise */
-FILE	*fp;
+static void
+rotateccw(			/* rotate picture counter-clockwise */
+	FILE	*fp
+)
 {
 	register COLR	*inln;
 	register int	xoff, inx, iny;