bitwise AND

Bitwise AND is a bit-level operation on two binary values which indicates which bits are set in both values. For each position $i$ , if and only if the bit $d_{i}$ in both values is 1, then $d_{i}$ of the result is also 1, othewise, it’s 0. For example, given 50 and 163 in two unsigned bytes, a bitwise AND returns 34.

In most high-level programming languages that offer bitwise AND, the usual operator is a single ampersand (&), not to be confused with a double ampersand (&&) which performs a Boolean AND, returning a True or False value.

The Windows Calculator offers bitwise AND in scientific calculator mode, while the Mac OS X Calculator offers it in programmer mode.

单词	BitwiseAND
释义	bitwise AND Bitwise AND is a bit-level operation on two binary values which indicates which bits are set in both values. For each position $i$ , if and only if the bit $d_{i}$ in both values is 1, then $d_{i}$ of the result is also 1, othewise, it’s 0. For example, given 50 and 163 in two unsigned bytes, a bitwise AND returns 34. In most high-level programming languages that offer bitwise AND, the usual operator is a single ampersand (&), not to be confused with a double ampersand (&&) which performs a Boolean AND, returning a True or False value. The Windows Calculator offers bitwise AND in scientific calculator mode, while the Mac OS X Calculator offers it in programmer mode.
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