GB/T 17966-2000 in English

《GB/T 17966-2000微处理器系统的二进制浮点运算》由TC28（全国信息技术标准化技术委员会）归口，TC28SC25（全国信息技术标准化技术委员会信息技术设备互连分会）执行，主管部门为国家标准化管理委员会。
本标准规定：1)基本和扩充的浮点数格式；2)加、减、乘、除、开平方、求余数以及比较运算；3)整数与浮点数之间的转换；4)不同浮点格式之间的转换；5)基本格式浮点数与十进制数串之间的转换；6)浮点异常及其处理，包括非数(NaN)的处理。

Scope

1.1 The purpose of achieving the goal is that no matter it is pure software, pure hardware or a combination of software and hardware, it can realize a floating-point system that meets this standard. System programmers or system users can know compliance with this standard. Those parts of hardware that require software support for compliance with this standard are not considered to be in compliance with this standard without software. 1.2 Contains the provisions of this standard: 1) Basic and extended floating-point number formats; 2) Addition, subtraction, multiplication, division, square root, remainder and comparison operations; 3) Conversion between integers and floating-point numbers; 4) Different floating-point numbers Conversion between point formats; 5) Conversion between basic format floating point numbers and decimal number strings; 6) Floating point exceptions and their handling, including handling of non-numbers (NaN). 1.3 Not included This standard does not specify: 1) The format of decimal strings and integers; 2) The interpretation of NaN symbols and valid fields; 3) The mutual conversion between binary and decimal in the extended format.