多模式CORDIC算法结构改进与实现

This paper improves the iterative structure of the CORDIC algorithm, and implements a multi-mode CORDIC algorithm.We reset the initial rotation to avoid the first two stage iterations and fix the error of the original algorithm by modify the judgment condition which determine the rotation direction of the vector.In the case of increasing few hardware resources, the sine, cosine, arcsine and arccosine operations are unified to the same iterative structure and be realized.The results show that the improved algorithm has higher accuracy and the hardware resources utilization can be effectively reduced in the application that need both of the two kinds of functions.