ANSI C 是否支持有符号/无符号位域? [英] Does ANSI C support signed / unsigned bit fields?

问题描述

将位域限定为有符号/无符号是否有意义?

Does it make sense to qualify bit fields as signed / unsigned?

推荐答案

标准的相关部分 (ISO/IEC 9899:1999) 是 6.7.2.1 #4:

The relevant portion of the standard (ISO/IEC 9899:1999) is 6.7.2.1 #4:

位域的类型应为合格或不合格_Bool、signed int、unsigned int 或其他一些实现定义的版本类型.

A bit-field shall have a type that is a qualified or unqualified version of _Bool, signed int, unsigned int, or some other implementation-defined type.

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