WOLFRAM SYSTEM MODELER
    AtanOutput the arc tangent of the input  | 
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SystemModel["Modelica.ComplexBlocks.ComplexMath.Atan"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
This blocks computes the output y as the
tangent-inverse of the input u. Optionally, the input u can be processed conjugate complex, when parameter useConjugateInput is true. Depending on useConjugateInput the internal signal uInternal represents either the original or the conjugate complex input signal.
y= atan(uInternal);
| useConjugateInput | 
         Value: false Type: Boolean Description: If true, input is processed conjugate complex  | 
    
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| u | 
         Type: ComplexInput Description: Connector of Complex input signal  | 
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| y | 
         Type: ComplexOutput Description: Connector of Complex output signal  | 
    
| uInternal | 
         Type: Complex Description: Equals either u or conjugate complex input u if useComplexInput = true  | 
    
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