Framework (A-Z)

Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If see any errors or have any comments, let us know.

Name

### | (bitwise OR)

Examples
```unsigned int a = 60;	// 60 = 0011 1100
unsigned int b = 13;	// 13 = 0000 1101
unsigned int c = 0;

c = a | b;              // 61 = 0011 1101
```
Description Compares two expressions bit by bit and returns 1 for a position bit if one or both compared postitions are 1. Returns 0 for that position bit if both compared positions are 0. The following list shows all possible combinations:

1 | 0 // Evaluates 1 because the first is 1
0 | 1 // Evaluates 1 because the second is 1
1 | 1 // Evaluates 1 because both are 1
0 | 0 // Evaluates 0 because both are 0
Syntax
```expression1 | expression2
```
Parameters
expression1 any valid expression any valid expression
Usage Application
Related & (bitwise AND)
&= (bitwise AND and assign)
|= (bitwise OR and assign)
^ (bitwise XOR)
˜ (bitwise ones complement)
<< (bitwise bit shift left)
>> (bitwise bit shift right)
Updated on July 07, 2011 11:07:54pm PDT