11 << 1 = $2 21 << 32 = $0 31 << 9001 = $0 4-1 << 1 = $FFFFFFFE 5-1 << 32 = $0 6-1 << -9001 = $FFFFFFFF 7-1 >> 1 = $FFFFFFFF 8-1 >> 32 = $FFFFFFFF 9-1 >> 9001 = $FFFFFFFF 10-4 >> 1 = $FFFFFFFE 11-4 >> 2 = $FFFFFFFF 12-1 >> -9001 = $0 13