operator Definition
A symbol that signifies the action of an operation. AHDL,
                  Verilog HDL, and VHDL offer logical, arithmetic, and relational
                  operators. Verilog HDL also offers equality, bit-wise, reduction,
                  shift, concatenation, conditional, and Event or
                  operators. AHDL also offers ternary operators. In AHDL, relational
                  operators are called "comparators."