Tcl - Bitwise Operators

The Bitwise operators supported by Tcl language are listed in the following table. Assume variable A holds 60 and variable B holds 13, then −

Operator	Description	Example
&	Binary AND Operator copies a bit to the result if it exists in both operands.	(A & B) will give 12, which is 0000 1100
\|	Binary OR Operator copies a bit if it exists in either operand.	(A \| B) will give 61, which is 0011 1101
^	Binary XOR Operator copies the bit if it is set in one operand but not both.	(A ^ B) will give 49, which is 0011 0001
<<	Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand.	A << 2 will give 240, which is 1111 0000
>>	Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand.	A >> 2 will give 15, which is 0000 1111

Example

Try the following example to understand all the bitwise operators available in Tcl language −

Live Demo

#!/usr/bin/tclsh

set a 60  ;# 60 = 0011 1100   
set b 13  ;# 13 = 0000 1101 

set c [expr $a & $b] ;# 12 = 0000 1100 
puts "Line 1 - Value of c is $c\n"

set c [expr $a | $b;] ;# 61 = 0011 1101 
puts "Line 2 - Value of c is $c\n"

set c [expr $a ^ $b;] ;# 49 = 0011 0001 
puts "Line 3 - Value of c is $c\n"

set c [expr $a << 2] ;# 240 = 1111 0000 
puts "Line 4 - Value of c is $c\n"

set c [expr $a >> 2] ;# 15 = 0000 1111 
puts "Line 5 - Value of c is $c\n"

When you compile and execute the above program, it produces the following result −

Line 1 - Value of c is 12

Line 2 - Value of c is 61

Line 3 - Value of c is 49

Line 4 - Value of c is 240

Line 5 - Value of c is 15

tcl_operators.htm