期刊論文

標題 A Radix-4 New Svota-Tung Divider with Constant Timing Complexity for Precsaling
學年 91
學期 1
出版(發表)日期 2003/01/01
作品名稱 A Radix-4 New Svota-Tung Divider with Constant Timing Complexity for Precsaling
作品名稱(其他語言)
著者 江正雄; Chiang, Jen-shiun; Tsai, Min-show
單位 淡江大學電機工程學系
出版者
著錄名稱、卷期、頁數 Kluwer Journal of VLSI Signal Processing 33(1/2), pp.117-124
摘要 A new floating-point division architecture that complies with the IEEE 754-1985 standard is proposed in this paper. This architecture is based on the New Svoboda-Tung (NST) division algorithm and the radix-4 MROR (maximally redundant maximally recoded) signed digit number system. In NST division, the divisor and dividend must be prescaled. We summarize a general systematic method to accomplish the prescaling, and we also propose a hardware scheme such that the timing complexity is constant regardless of the bit length of the divisor. For the divider implementation, a new MROR signed digit adder with carry free characteristic is proposed for addition and subtraction, and this adder can improve the cycle time significantly. A 32-b/32-b radix-4 divider is thus designed in Verilog HDL; the simulation results show that this architecture is implementable using currently available libraries. The hardware complexity and performance of this divider is competitive with conventional SRT dividers.
關鍵字 computer arithmetic;floating-point division;new Svoboda-Tung;division;prescaling;radix-4;signed digit number system;Svoboda-Tung division
語言 英文(美國)
ISSN 0922-5773
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度
國別 美國
公開徵稿
出版型式 ,紙本