c++ - 作为抽象，C++ 是否支持 "bits"表示两个以上值之一？

Question

[C++11: 1.7] 用比特来谈bytes:

The fundamental storage unit in the C++ memory model is the byte. A byte is at least large enough to contain any member of the basic execution character set (2.3) and the eight-bit code units of the Unicode UTF-8 encoding form and is composed of a contiguous sequence of bits, the number of which is implementation-defined. The least significant bit is called the low-order bit; the most significant bit is called the high-order bit. The memory available to a C++ program consists of one or more sequences of contiguous bytes. Every byte has a unique address.

但是，我在定义“位”的标准中找不到任何地方。

那么说 C++ 对单个位可以表示的值的数量没有限制是真的吗？

它是否允许三态位？

Answer 1

[C++11: 1.2] 中列出的规范性引用中有“ISO/IEC 9899:1999，编程语言 — C”。

反过来，这个标准说:

[C99: 3.5]: 1 bit unit of data storage in the execution environment large enough to hold an object that may have one of two values

这并不排除比特是一个更大的数据存储单元，因此 C++ 作为一门语言确实可以支持三态比特。