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Bits

  

Xor

  

compute bit-wise xor of the inputs

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Xor(num1, num2)

Xor(num1, num2, options)

Parameters

num1

-

an integer

num2

-

an integer

options

-

optional arguments

Description

• 

The Xor command computes the bit-wise logical exclusive or of the inputs returning in terms of a number. All bits that are set in exactly one of the inputs will be set in the output.

• 

Xor takes one optional argument, bits=number that specifies the number of bits to be considered in the input. All bits past the specified number are truncated.

• 

Use with negative inputs requires that bits be set, either as an argument to Xor or globally via Settings. If both inputs are positive, no truncation need occur, so bits is computed as the largest most significant bit between the two inputs.

Examples

withBits:

num1Join1,1,0,0,0,1,0,1,0,1,1,0,1,1,1

num1:=30371

(1)

num2Join0,1,1,0,0,1,0,0,1,0,0,0,1,0,1

num2:=20774

(2)

The following number represents the Xor of num1,num2

num3Join1,0,1,0,0,0,0,1,1,1,1,0,0,1,0

num3:=10117

(3)

Compare:

num3,Xornum1,num2

10117,10117

(4)

Negative inputs and outputs

Settingsdefaultbits=8,negativeout=true:

Xor1,12

13

(5)

Xor1,128

127

(6)

See Also

Bits

Join

Settings

 


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