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# 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 itβs 0. For example, given 50 and 163 in two unsigned bytes, a bitwise OR returns 179.

0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | |

OR | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
---|---|---|---|---|---|---|---|---|

= | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |

In most high-level programming languages that offer bitwise OR, the usual operator is a single pipe line (β), not to be confused with a double pipe line (ββ) 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.

Related:

BitwiseAND, BitwiseXOR, BitwiseNOT

Type of Math Object:

Definition

Major Section:

Reference

## Mathematics Subject Classification

11A63*no label found*

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