>> (right shift) \ Language (API) \ Processing 1.0
Author: Casey Reas & Ben Fry
Description: Processing is an electronic sketchbook for developing ideas. It is a context for learning fundamentals of computer programming within the context of the electronic arts.
Keywords: Processing, Processing, Interactive Media, Electronic Arts, Programming, Java, Ben Fry, Casey Reas

Reference for Processing version 1.5. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.

Name | ### >> (right shift)
Examples |
    int m = 8 >> 3;    // In binary: 1000 to 1
    println(m);  // Prints "1"
    int n = 256 >> 6;  // In binary: 100000000 to 100
    println(n);  // Prints "4"
    int o = 16 >> 3;   // In binary: 10000 to 10
    println(o);  // Prints "2"
    int p = 26 >> 1;   // In binary: 11010 to 1101
    println(p);  // Prints "13"
    // Using "right shift" as a faster method than red(), green(), and blue()
    color argb = color(204, 204, 51, 255);
    int a = (argb >> 24) & 0xFF;
    int r = (argb >> 16) & 0xFF;  // Faster way of getting red(argb)
    int g = (argb >> 8) & 0xFF;   // Faster way of getting green(argb)
    int b = argb & 0xFF;          // Faster way of getting blue(argb)
    fill(r, g, b, a);
    rect(30, 20, 55, 55);
Description | Shifts bits to the right. The number to the left of the operator is shifted the number of places specified by the number to the right. Each shift to the right halves the number, therefore each left shift divides the original number by 2. Use the right shift for fast divisions or to extract an individual number from a packed number. Right shifting only works with integers or numbers which automatically convert to an integer such at byte and char. Bit shifting is helpful when using the color data type. A right shift can extract red, green, blue, and alpha values from a color. A left shift can be used to quickly reassemble a color value (more quickly than the color() function).
Syntax |
    value >> n
Parameters |
value | int: the value to shift
n | int: the number of places to shift right
Usage | Web & Application
Related | << (left shift)

Updated on August 30, 2010 04:29:39pm EDT