bit.adoc

title	categories	subCategories
bit()	Functions	Bits and Bytes

bit()

Description

Computes the value of the specified bit (bit 0 is 1, bit 1 is 2, bit 2 is 4, etc). The value returned is 2^n where n is an integer input.

Syntax

bit(n)

Parameters

n: the bit whose value to compute

Returns

The value of the bit.

Example Code

Prints the output of bit(n) for n=0 to n=10 to the serial monitor. Values returned are 1 2 4 8 16 till 1024.

void setup() {
Serial.begin(9600);
}

void loop() {
for(int n=0;n<=10;n++)  //loop from n=0 till 10
  {
  Serial.print(" ");    //space between numbers, for readability
  Serial.print(bit(n)); //print the value of bit(n)
  delay(1000);
  }
}

Notes and Warnings

The variable n must be an integer type. float and double will return an error and the program will not compile.

The maximum value that can be returned by bit(n) is 2^31 = 2147483648 after which 0 is returned.

See also