printf (" %x, %x, %x, %x\n", 0xffffffff, 0xf0000000, 0x81234567, ~0xffff);
printf (" %x, %x, %x\n", 0xfffffff<<4, 15 << 28, ~1);
$a = 0xffff0000 & 7; $b = 15 << 28 & 7; print " a is $a; b is $b\n";