ISO/IEC 10967的这一部分规定了许多 标准库中的实数基数值函数可用于各种编程 数学和数值应用中常用的语言。 实现者可以选择硬件和软件支持的任意组合来满足需求 本部分的规格。正如程序员/用户所看到的，计算环境 是否符合规范。 术语实现（本部分）指的是整个计算环境 这部分包括硬件、语言处理器、子程序库、异常处理 设施、其他软件和文档。

This part of ISO/IEC 10967 de_nes the properties of numerical approximations for many of the real elementary numerical functions available in standard libraries for a variety of programming languages in common use for mathematical and numerical applications. An implementor may choose any combination of hardware and software support to meet the speci_cations of this part. It is the computing environment, as seen by the programmer/user, that does or does not conform to the speci_cations. The term implementation (of this part) denotes the total computing environment pertinent to this part, including hardware, language processors, subroutine libraries, exception handling facilities, other software, and documentation.