用汇编语言设计浮点库及有关函数  

The Design of a Set of Algorithm in 8080 for the Calculations of Floating-point Numbers and for Some Common Used Functions

作　　者：史岚[1] 

机构地区：[1]东北大学黄金学院

出　　处：《黄金学报》1999年第2期134-137,共4页Gold Journal

摘　　要：在工业PC机应用中广泛采用的80386具有很强的运算功能，但本身不支持浮点数运算．而几乎所有工控系统中又都要用到各种浮点数的转换与运算．在此用8080汇编语言设计了一级浮点运算和转换运算的算法以及一些常用函数如sin（x），cos（x），In（x）等的算法．用这组软件实现浮点运算可省略80387的使用，从而降低工业控制机的成本．The processor 80386, which is widely used in industry process control PCs, has very strong calculating ability. However, it doesn't support floating-point number's clculation.And in almost every industry process control system the conversion s and calculations of floating-point number are necessary.Here a set of programs are designed in 8080 for the calculations of floating-point numbers and some common used functions. The substitution of the software for the processor 80387 in an industry process control system can reduced the cost of the system.

关 键 词：浮点数 定点数 规格化 阶码 尾数 汇编语言 

分 类 号：TP313[自动化与计算机技术—计算机软件与理论]