Implementations of 32-bits Fixed and Floating Point Trigonometric Functions with FPGA
Wei Li · Microelectronics & Computer · 2012
Firstly,this paper introduces the Lookup-table algorithm and cordic algorithm.Based on the two algorithms,we program and design 32-bit fixed-point trigonometric functions with Verilog-HDL.Combined with simulation,we evaluate these two methods by comparing operation precision,operation speed and hardware resources occupied.Then,we design the 32-bit floating-point trigonometric functions directly based on improved cordic algorithm without floating-fixed exchange.Finally,we evaluate these three methods.