Pipelined Range Reduction Based Truncated Multiplier  

作　　者：ZHU Baozhou LEI Yuanwu PENG Yuanxi 

机构地区：[1]College of Computer, National University of Defense and Technology

出　　处：《Chinese Journal of Electronics》2019年第6期1158-1164,共7页电子学报（英文版）

基　　金：supported by the National Natural Science Foundations of China(No.61402499,No.61672526)

摘　　要：Range reduction is the initial and essential stage of function computation,but its pipelined implementation has the drawbacks of large cost and terrible accuracy.We proposed low cost and accurate pipelined range reduction,which adopts truncated multiplier with optimized bit-width to reduce the cost of pipelined implementation and achieve the accuracy within 1 unit in the last place(ulp).TCORDIC algorithm is a widely used algorithm to compute floating-point sine/cosine function,and we implemented the combination of TCORDIC and our range reduction algorithms,verifying the goal of accuracy within 1 ulp.Range reduction is the initial and essential stage of function computation, but its pipelined implementation has the drawbacks of large cost and terrible accuracy. We proposed low cost and accurate pipelined range reduction, which adopts truncated multiplier with optimized bit-width to reduce the cost of pipelined implementation and achieve the accuracy within 1 unit in the last place(ulp). TCORDIC algorithm is a widely used algorithm to compute floating-point sine/cosine function,and we implemented the combination of TCORDIC and our range reduction algorithms, verifying the goal of accuracy within 1 ulp.

关 键 词：PIPELINED RANGE REDUCTION TRUNCATED MULTIPLIER Low cost FLOATING-POINT 

分 类 号：TN[电子电信]