2.3 KiB
Bits Library
Functions in the Bits library.
@parent td/language
The binary numeral system represents numeric values using values 0 and 1. This is how almost all modern computers store data. Each 0 or 1 digit is called a binary digit, or bit for short.
The Bits library includes functions for bit-level manipulation of integers. In the Touch Develop editor, click bits to see the following bit functions:
Bitwise and, or, and xor functions
Syntax
bits -> and/or/xor uint32 (x : Number, y : Number) returns Number
Parameters
and uint32
performs bitwise AND; returns 1 at position i if both bits x[i] and y[i] are 1, otherwise returns 0.
or uint32
performs bitwise OR; returns 1 at position i if either bit x[i] or y[i] is 1, otherwise returns 0.
xor uint32
performs bitwise exclusive XOR; returns 1 at position i if x[i]=1 and y[i]=0 or x[i] = 0 and y[i] =1; returns 0 otherwise
Rotate left and rotate right
Rotate bits to the left or the right, by the specified number of positions.
Syntax
bits -> rotate left unint32 (x : Number, bits : Number) returns Number
bits -> rotate right unint32 (x : Number, bits : Number) returns Number
Parameters
Shift left and shift right
Shift bits to the left or the right, by the specified number of positions.
Syntax
bits -> shift left unint32 (x : Number, bits : Number) returns Number
bits -> shift right unint32 (x : Number, bits : Number) returns Number