INTEGER IZBIT(32)
      DATA IZBIT/1,          2,          4,          8,
     *          16,         32,         64,        128,
     *         256,        512,       1024,       2048,
     *        4096,       8192,      16384,      32768,
     *       65536,     131072,     262144,     524288,
     *     1048576,    2097152,    4194304,    8388608,
     *    16777216,   33554432,   67108864,  134217728,
     *   268435456,  536870912, 1073741824, Z'80000000'/