I am implementing a function f=x^2 in verilog. To achieve optimization in area, power or speed , is there any structure that can replace the multipliers? (other than shifters)
What is x? Is it an integer or a real number? What is the range of x? For example, if I know that x is a 4-bit unsigned integer, then I can come up with a combinational circuit for computing x^2.
Depending on your requirements on precision you can also consider using Look up table. If required number of LUT records is reasonable, implementation with e.g. block RAM is simple and fast.