--- ray/src/px/clrtab.c	1993/02/23 15:11:59	2.5
+++ ray/src/px/clrtab.c	1993/06/10 15:45:18	2.7
@@ -181,7 +181,7 @@ register int	box[3][2];
 #define c0	r
 	register int	r, g, b;
 	int	pri;
-	int	t[HMAX], med;
+	long	t[HMAX], med;
 					/* find dominant axis */
 	pri = RED;
 	if (box[GRN][1]-box[GRN][0] > box[pri][1]-box[pri][0])
@@ -238,7 +238,8 @@ int	p;
 register int	box[3][2];
 {
 	unsigned long	sum[3];
-	unsigned	r, g, n;
+	unsigned	r, g;
+	unsigned long	n;
 	register unsigned	b, c;
 						/* sum pixels in box */
 	n = 0;
@@ -254,7 +255,7 @@ register int	box[3][2];
 		    }
 		    histo[r][g][b] = p;		/* assign pixel */
 		}
-	if (n >= (1<<23)/HMAX) {		/* avoid overflow */
+	if (n >= (1L<<23)/HMAX) {		/* avoid overflow */
 		sum[RED] /= n;
 		sum[GRN] /= n;
 		sum[BLU] /= n;