StepFn MathReals Function -- Entisoft Tools 2.0 Object Library

Step Fn Function
Math Reals Class

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

Summary:

    If X < 0: Return 0.
    If X = 0: Return .5
    If X > 0: Return 1.

Examples:

    StepFn(-1) = 0
    StepFn(0) = 0.5
    StepFn(1) = 1
    StepFn(23) = 1

See also:

    StepFnVerify Subroutine
    Sign Function
    Sgn Function (Visual Basic)

Definition:

    Sgn(vX) / 2 + 1 / 2

vX: Number whose step (as defined above) is returned. Function returns Null if vX is Null or cannot be fixed up to a number.

v1.5 BugFix: Corrected this function to return 0 (zero) instead of -1 when vX is a negative number.