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

Name

### & (bitwise AND)

Examples

    int a = 207;    // In binary: 11001111
    int b = 61;     // In binary: 00111101
    int c = a & b; // In binary: 00001101
    println(c);     // Prints "13", the decimal equivalent to 00001101

    color argb = color(204, 204, 51, 255);
    // The sytax "& 0xFF" compares the binary
    // representation of the two values and
    // makes all but the last 8 bits into a 0.
    // "0xFF" is 00000000000000000000000011111111
    int a = argb >> 24 & 0xFF;
    int r = argb >> 16 & 0xFF;
    int g = argb >> 8 & 0xFF;
    int b = argb & 0xFF;
    fill(r, g, b, a);
    rect(30, 20, 55, 55);

Description

Compares each corresponding bit in the binary representation of the values. For each comparison two 1's yeild 1, 1 and 0 yeild 0, and two 0's yeild 0. This is easy to see when we look at the binary representation of numbers

      11010110  // 214
    & 01011100  // 92
      --------
      01010100  // 84

To see the binary representation of a number, use the binary() function with println().

Syntax

    value & value2

Parameters

value1 | int, char, byte
value2 | int, char, byte

Usage | Web & Application
Related | | (bitwise OR) binary()

Updated on November 22, 2008 08:39:25pm PST