变步长法计算标准正态分布函数与函数模块设计

Calculation and Program Design of Standard Normal Distribution Function Using Method of Changing Step Length

对标准正态分布函数公式进行恒等变形,再用变步长法计算正态分布函数值,并用VB6.0完成该函数计算功能模块的程序设计。在大气预测模式程序设计过程中,该模块可被直接调用,有助于预测模式的连续、快速计算。

This paper firstly describes the equivalent transformation of standard normal distribution function, then calculates the function value by using the method of changing step length, and lastly gives out the flow chart and program written in Visual Basic. The program can be referenced by other forecast application to get results continually and rapidly.