计算机应用与软件Issue(2)：279-282,4.DOI:10.3969/j.issn.1000-386x.2014.02.075
基于改进SF-CORDIC的指数和对数函数求值算法
EVALUATION ALGORITHM FOR EXPONENTIAL AND LOGARITHMIC FUNCTIONS USING ENHANCED SCALING-FREE CORDIC
摘要
Abstract
An enhanced scaling-free CORDIC algorithm is proposed for implementing the hardware computation of exponential and logarith-mic functions.By proper selection of the approximated order of Maclaurin series the algorithm can completely eliminates the scale-factor com-putation,and uses repeated basic iteration and data pre-processing to extend the domain of convergence and computation scope.Meanwhile, both the rotation mode and vectoring mode of the proposed algorithm in hyperbolic coordinate system is presented.Simulation experiments demonstrate that 12% area consumption is able to be reduced comparing with the conventional CORDIC for same computation accuracy re-quirement.关键词
CORDIC/算法/免扩展/指数函数/对数函数Key words
CORDIC algorithm/Scaling-free/Exponential function/Logarithmic function分类
信息技术与安全科学引用本文复制引用
黄晓可,刘洛琨,汪涛,郭虹..基于改进SF-CORDIC的指数和对数函数求值算法[J].计算机应用与软件,2014,(2):279-282,4.基金项目
国家高技术研究发展计划项目（2009 AA011205）。 （）
