| 改进的不恢复余数的浮点开方算法的研究与FPGA实现 |
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| 引用本文： | 王文广,曹建,陈志敏.改进的不恢复余数的浮点开方算法的研究与FPGA实现[J].现代电子技术,2007,30(16):68-71. |
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| 作者姓名： | 王文广 曹建 陈志敏 |
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| 作者单位： | 中南大学,物理科学与技术学院,湖南,长沙,410083 |
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| 摘 要： | 对一种改进的不恢复余数的开方算法(non-restoring square-root algorithm)进行了讨论,并将其应用于基于IEEE 754标准的32位浮点格式的开方运算中,以一款FPGA为载体,实现了进行运算的基本电路。对目前存在的几种开方算法进行了评述,分析了他们的优缺点,提出了改进的不恢复余数开方算法模块化的设计思路与关键电路,并分析了仿真和逻辑综合的结果,证明了该算法运算速度较快且占用资源极少的特点。
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| 关 键 词： | 开方运算 不恢复余数的开方算法 |
| 文章编号： | 1004-373X（2007）16-068-04 |
| 收稿时间： | 2007-03-28 |
| 修稿时间： | 2007年3月28日 |
Research and FPGA Implemation of Improved Non - Restoring Float Square - Root Algorithm |
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| WANG Wenguang,CAO Jian,CHEN Zhimin.Research and FPGA Implemation of Improved Non - Restoring Float Square - Root Algorithm[J].Modern Electronic Technique,2007,30(16):68-71. |
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| Authors: | WANG Wenguang CAO Jian CHEN Zhimin |
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| Affiliation: | Sehool of Physies Science and Technology, Central South University, Changsha, 410083, China |
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| Abstract: | This paper introduces and discusses an improved non-restoring square-root algorithm,applies it to 32bit float squre-root which is based on the IEEE 754 standard and implemens the basis circuit on one FPGA chip.Firstly,this paper discusses the current uses squre-root algorithms,analysed the advantages and disadvantages of these algorithms,then it presents the modulized design and essential circuit of non-restoring square-root algorithm,and analyses the result of the simulation and logic synthesis,this prove the algorithm has high speed and much low-cost. |
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| Keywords: | IEEE 754 FPGA |
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