--- ray/src/px/pextrem.c	2004/01/02 12:47:01	2.9
+++ 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 2.9 2004/01/02 12:47:01 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.
@@ -50,9 +50,11 @@ headline(			/* check header line */
 }
 
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+int
+main(
+	int  argc,
+	char  *argv[]
+)
 {
 	int  i;
 	int  xres, yres;
@@ -84,8 +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) {