i need design of these items from a to e in spartan 3e fpga resources please

Design a hardware digital circuits equivalent to the following software instruction functions using minimum number of embedded resources inside Xilinx Spartan-3 FPGA, verify your answer by giving simple clear numerical example for each step in your designs. A. F1(x); return the negative value for the input x B. F2(x); return the sin value for angle x C. F3(x): return the absolute value for the input x D. F4 : BCD loop E. F5(x, y): shift left input x, y number of bits to be shifted