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单词 BitwiseNOT
释义

bitwise NOT


Bitwise NOT is a bit-level operation on a single binary value that sets the bits that are off and turns off the bits that are on. For example, performing a bitwise NOT on 163 gives 92.

Performing a bitwise NOT on a number n has the same effect as performing a bitwise XOR on a Mersenne number of the form 2k-1 (where k is the bit size of the data type in use, e.g., 8 for bytes, 16 for words, 32 for double words, etc.) and n. Obviously a bitwise NOT on 0 gives the largest Mersenne number that can fit in the data type in use.

The Windows Calculator offers bitwise NOT in scientific calculator mode, while the Mac OS X Calculator offers it in programmer mode.

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更新时间:2025/5/4 5:18:19