The fused multiply add (FMA) operation is very important in many scientific and engineering applications. It is a key feature of the floating-point unit (FPU), which greatly increases the floating-point performance and accuracy.Many approaches are developed on floating-point fused multiply add unit to decrease its latency.two of these approaches are implemented in the Verilog hardware description language. ModelSim10.0c is a used to compile Verilog codes and to simulate them.