V2EX bitwise

Bitwise

释义 Definition

bitwise(形容词/副词):按位的;逐位地。指把数据当作二进制位(bit)来处理,对每一位分别进行运算(常见于编程与计算机科学)。也常见于短语 bitwise operator(按位运算符)。

发音 Pronunciation (IPA)

/bt.waz/

例句 Examples

Bitwise operations are fast on most CPUs.
按位运算在大多数 CPU 上都很快。

To store flags efficiently, the program combines options bitwise and later checks them with masks.
为了高效存储标志位,程序按位组合多个选项,之后再用掩码进行检查。

词源 Etymology

bit(二进制位,binary digit 的缩写)+ 后缀/构词成分 -wise(表示“以……方式;就……而言”)构成,字面意思是“以位为单位地”,引申为“逐位处理”的计算机术语。

相关词 Related Words

文学与作品 Literary Works

  • The C Programming Language(Kernighan & Ritchie):讨论位运算与位级表示时会使用并讲解 bitwise(如 bitwise operators)。
  • Hacker’s Delight(Henry S. Warren, Jr.):大量涉及“按位”技巧与算法优化,频繁出现 bitwise
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