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

Namespace: Imsl.Math
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.0.0

Syntax

C#
public static Complex Atan(
	Complex z
)
Visual Basic (Declaration)
Public Shared Function Atan ( _
	z As Complex _
) As Complex
Visual C++
public:
static Complex Atan(
	Complex z
)

Parameters

z
Type: Imsl.Math..::.Complex
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