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Square Wave Function
Math Arithmetic Class

Public Function SquareWave( _
    ByVal vX As Variant _
    ) As Variant

Function whose output resembles a square wave.

Examples: 
    SquareWave(-2.0) = 1
    SquareWave(-1.5) = 1
    SquareWave(-1.0) = -1
    SquareWave(-0.5) = -1
    SquareWave(+0.0) = 1
    SquareWave(+0.5) = 1
    SquareWave(+1.0) = -1
    SquareWave(+1.5) = -1
    SquareWave(+2.0) = 1
See also: 
    SquareWaveSample Subroutine
    SawtoothWave Function
    Sine Function, et. al.
    Floor Function
    ^ Operator (Visual Basic)
vNumber: The X position of the square wave whose Y position will be returned. Function returns Null if vNumber is Null or cannot be fixed up to a number.

Definition: 

    (-1) ^ Floor(X)

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