[NumLock]

Arithmetic operators, which take real or integer operands, include +, -, *, /, div, and mod.
The Boolean operators not, and, or, and xor take operands of any Boolean type and return a value of type Boolean.
The operations x shl y and x shr y shift the value of x to the left or right by y bits, which (if x is an unsigned integer) is equivalent to multiplying or dividing x by 2^y; the result is of the same type as x.