bitwise OR

Bitwise OR is a bit-level operation on two binary values which indicates which bits are set in either value. For each position $i$ , if the bit $d_{i}$ in either value is 1, then $d_{i}$ of the result is 1, otherwise it’s 0. For example, given 50 and 163 in two unsigned bytes, a bitwise OR returns 179.

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

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

单词	BitwiseOR
释义	bitwise OR Bitwise OR is a bit-level operation on two binary values which indicates which bits are set in either value. For each position $i$ , if the bit $d_{i}$ in either value is 1, then $d_{i}$ of the result is 1, otherwise it’s 0. For example, given 50 and 163 in two unsigned bytes, a bitwise OR returns 179. In most high-level programming languages that offer bitwise OR, the usual operator is a single pipe line (—), not to be confused with a double pipe line (——) which performs a Boolean OR, returning a True or False value. The Windows Calculator offers bitwise OR in scientific calculator mode, while the Mac OS X Calculator offers it in programmer mode.
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