IMSL C# Numerical Library

Complex.Atan Method

Returns the inverse tangent (arc tangent) of a Complex, with branch cuts outside the interval [-i,i] along the imaginary axis.

public static Complex Atan(
Complex z
);

Parameters

z: A Complex object.

Return Value

A newly constructed Complex initialized to the inverse (arc) tangent of the argument. Its real part is in the interval $[-\pi/2,\pi/2]$ .

Remarks

The value of Atan is defined in terms of the function Atanh, by $\atan(z) = -i \atanh(iz)$ .

See Also

Complex Class | Imsl.Math Namespace | Atanh