bit
Shift this integer left by the specified number of bits. If the shift amount is negative, perform a right shift instead (of the negation of the specified amount). In the case that the receiver is negative, shift in zeroes on the right or ones on the left.
Return
The shifted Avail integer.
Parameters
shift
How much to shift left, or if negative, the negation of how much to shift right.
can
Whether either input can be destroyed or recycled if it's mutable.