本文档建立在ISO/IEC 14882的基础上，描述了用C++编程语言编写的计算机程序可以用来调用并行执行的算法的接口的实现要求。本文档描述的算法可跨广泛类别的计算机架构实现。本文档是作为一组与基本标准的差异而编写的。 本文档描述的一些功能可能会被考虑在C++的未来版本中进行标准化，但它目前不是ISO/IEC 14882:2020的一部分。本文档中的一些功能可能永远不会被标准化，而其他功能可能会以完全不同的形式被标准化。 本文档的目标是在ISO/IEC 14882:2020算法库中建立广泛的现有并发实践。它向那些希望提供扩展的供应商提供扩展建议。

This document builds upon ISO/IEC 14882 by describing requirements for implementations of an interface that computer programs written in the C++ programming language could use to invoke algorithms with concurrent execution. The algorithms described by this document are realizable across a broad class of computer architectures. This document is written as a set of differences from the base standard. Some of the functionality described by this document might be considered for standardization in a future version of C++, but it is not currently part of ISO/IEC 14882:2020. Some of the functionality in this document might never be standardized, and other functionality might be standardized in a substantially different form. The goal of this document is to build widespread existing practice for concurrency in the ISO/IEC 14882:2020 algorithms library. It gives advice on extensions to those vendors who wish to provide them.