常用函数快速计算方案研究

A Study of Schemes on Fast Calculation of Common Mathematical Functions

本文根据各种常用函数调用频度，深入讨论了函数计算的加速措施，提出了用函数指令、辅助指令、宏指令、固定函数库及驻内存函数库五种方法结合起来实现常用函数的快速计算，并给出了性能评价和效能分析。

In this paper,the methods of acceleration on the calculation of func-tions are discussed according to the frequency of calling common mathematical functions. The way of combining five methods of calculation for mathematical functions:function instructions,auxiliary instructions,macro permanent function li-braries and memory,which are used to achieve fast calculation of funtions,is put forward.Finally the performance evaluation and efficiency analysis are given.