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Snippet XOR implementation

Wingnut

Well-known member
3rd Party Module Dev
Tutorial Author
Joined
Jan 2, 2020
Messages
1,414
Here's an example of how to implement an Exclusive OR (XOR) , using only AND, OR, and NOT :
Cerberus:
Function XOR:Int(a:Int,b:Int)
    Return (a | b) & ~ (a & b)
End

    ' A short Logical XOR operator using bitwise operators
        '
        ' In Cerberus-X True is 1 (you  may cast Bool into Int using Int(False) = 0 and Int(True) = 1)
        '
        ' This example uses Int instead of Bool to make it compatible with true being both -1 and 1

        ' Example       Outputs :
        Print XOR(0,0)   ' 0
        Print XOR(1,1)   ' 0
        Print XOR(1,0)   ' 1
        Print XOR(0,1)   ' 1
        Print "------"
        Print XOR(0,0)   ' 0
        Print XOR(-1,-1) ' 0
        Print XOR(-1,0)  '-1
        Print XOR(0,-1)  '-1
        Return 0

Complete working example :
Cerberus:
Strict
Import mojo2

Class myClass Extends App
    Field canvas:Canvas

    Method OnCreate:Int()
        canvas = New Canvas   

        ' A short Logical XOR operator using bitwise operators
        '
        ' In Cerberus-X True is 1 (you  may cast Bool into Int using Int(False) = 0 and Int(True) = 1)
        '
        ' This example uses Int instead of Bool to make it compatible with true being both -1 and 1

        ' Example       Outputs :
        Print XOR(0,0)   ' 0
        Print XOR(1,1)   ' 0
        Print XOR(1,0)   ' 1
        Print XOR(0,1)   ' 1
        Print "------"
        Print XOR(0,0)   ' 0
        Print XOR(-1,-1) ' 0
        Print XOR(-1,0)  '-1
        Print XOR(0,-1)  '-1
        Return 0
    End

    Method OnUpdate:Int()
        Return 0
    End

    Method OnRender:Int()
        canvas.Clear (0,0.5,0)
        canvas.DrawText( String("Check the console").Split("~n")),DeviceWidth()/2,DeviceHeight()/2,0.5,0.5
        canvas.Flush
        Return 0
    End
End

Function Main:Int()
    New myClass   
    Return 0
End

Function XOR:Int(a:Int,b:Int)
    Return (a | b) & ~ (a & b)
End
 
Last edited:
Cerberus X has the XOR operator, this returns the same result:

Cerberus:
Function XOR:Int(a:Int, b:Int)
    Return a~b
End
 
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