<< (left shift)

Name

Examples

int m = 1 << 3;   // In binary: 1 to 1000

println(m);  // Prints "8"

int n = 1 << 8;   // In binary: 1 to 100000000

println(n);  // Prints "256"

int o = 2 << 3;   // In binary: 10 to 10000

println(o);  // Prints "16"

int p = 13 << 1;  // In binary: 1101 to 11010

println(p);  // Prints "26"

// Packs four 8 bit numbers into one 32 bit number

int a = 255;  // Binary: 00000000000000000000000011111111

int r = 204;  // Binary: 00000000000000000000000011001100

int g = 204;  // Binary: 00000000000000000000000011001100

int b = 51;   // Binary: 00000000000000000000000000110011

a = a << 24;  // Binary: 11111111000000000000000000000000

r = r << 16;  // Binary: 00000000110011000000000000000000

g = g << 8;   // Binary: 00000000000000001100110000000000



// Equivalent to "color argb = color(r, g, b, a)" but faster

color argb = a | r | g | b;

fill(argb);

rect(30, 20, 55, 55);

Description

Shifts bits to the left. 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 left doubles the number, therefore each left shift multiplies the original number by 2. Use the left shift for fast multiplication or to pack a group of numbers together into one larger number. Left shifting only works with integers or numbers which automatically convert to an integer such at byte and char.

Syntax