--- ray/src/px/pextrem.c	2003/06/05 19:29:34	2.6
+++ ray/src/px/pextrem.c	2005/06/02 18:13:47	2.11
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: pextrem.c,v 2.6 2003/06/05 19:29:34 schorsch Exp $";
+static const char	RCSid[] = "$Id: pextrem.c,v 2.11 2005/06/02 18:13:47 greg Exp $";
 #endif
 /*
  * Find extrema points in a Radiance picture.
@@ -7,9 +7,11 @@ static const char	RCSid[] = "$Id: pextrem.c,v 2.6 2003
 
 #include  <stdio.h>
 #include  <math.h>
+#include  <string.h>
 
 #include  "platform.h"
 #include  "color.h"
+#include  "resolu.h"
 
 
 int  orig = 0;
@@ -18,9 +20,14 @@ int  wrongformat = 0;
 
 COLOR  expos = WHTCOLOR;
 
+static gethfunc headline;
 
-headline(s)			/* check header line */
-char  *s;
+
+static int
+headline(			/* check header line */
+	char  *s,
+	void	*p
+)
 {
 	char	fmt[32];
 	double	d;
@@ -43,9 +50,11 @@ char  *s;
 }
 
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+int
+main(
+	int  argc,
+	char  *argv[]
+)
 {
 	int  i;
 	int  xres, yres;
@@ -54,7 +63,7 @@ char  *argv[];
 	COLR  *scan;
 	COLR  cmin, cmax;
 	int  xmin, ymin, xmax, ymax;
-	SET_DEFAULT_BINARY()
+	SET_DEFAULT_BINARY();
 	SET_FILE_BINARY(stdin);
 	for (i = 1; i < argc; i++)	/* get options */
 		if (!strcmp(argv[i], "-o"))
@@ -77,8 +86,8 @@ char  *argv[];
 		fprintf(stderr, "%s: out of memory\n", argv[0]);
 		exit(1);
 	}
-	setcolr(cmin, 1e10, 1e10, 1e10);
-	setcolr(cmax, 0., 0., 0.);
+	setcolr(cmin, 1e30, 1e30, 1e30);
+	setcolr(cmax, 0., 0., 0.); xmax=ymax=0;
 					/* find extrema */
 	for (y = yres-1; y >= 0; y--) {
 		if (freadcolrs(scan, xres, stdin) < 0) {