两种数据类型的存储特征分析及其转换

The Conversion of Two Data Types and the Analysis of the Store Character

石油地震的振幅数据一般均采用SEGY(Society of Exploration Geophysicists)格式中的IBM32格式存储,而在PC机上采用IEEE(Institute for Electrical and Electronic Engineers)格式存储。本文分析了4字节实型数据的两种存储方式的特征,举例说明了两种存储方式的数据值的计算方法,并给出了将IBM32存储方式转换为IEEE存储方式的程序。

Petroleum seismic amplitude data are always stored in the form of IBM32 of SEGY （Society of Exploration Geophysicists） while on PC, in the form of IEEE（Institute for Electrical and Electronic Engineers）. The characteristics of the two store modes of 4-byte floating data were analyzed, the calculation of the data of both methods are introduced with examples, and finally, the program for conversion of IBM32 and IEEE data is given.