trying to display delat min/max

tools/fimgstats.c

@@ -49,9 +49,12 @@ if (foo) {
 	return foo;
 	}
 
-printf("Rmin  %12.4g    Rmax  %12.4g\n", vals[0], vals[1]);
-printf("Gmin  %12.4g    Gmax  %12.4g\n", vals[2], vals[3]);
-printf("Bmin  %12.4g    Bmax  %12.4g\n", vals[4], vals[5]);
+printf("Rmin  %12.4g    Rmax  %12.4g    delta %12g\n",
+			vals[0], vals[1], vals[1]-vals[0]);
+printf("Gmin  %12.4g    Gmax  %12.4g          %12g\n",
+			vals[2], vals[3], vals[3]-vals[2]);
+printf("Bmin  %12.4g    Bmax  %12.4g          %12g\n",
+			vals[4], vals[5], vals[5]-vals[4]);
 
 return 0;
 }