@@ -216,8 +216,8 @@ static int normalize_bits(int num, int width)

             return bits;

         if (num < 0)

             num = ~num;

-        for (i = 0; num < limit; i++)

-            num <<= 1;

+        i= bits - av_log2(num) - 1;

+        i= FFMAX(i, 0);

     }

     return i;

 }