DecimalMath.Atan2 Method

Namespace: Numerics.NET
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.2

C# Copy

public static decimal Atan2(
	decimal yValue,
	decimal xValue
)

Visual Basic Copy

Public Shared Function Atan2 ( 
	yValue As Decimal,
	xValue As Decimal
) As Decimal

C++/CLI Copy

public:
static Decimal Atan2(
	Decimal yValue, 
	Decimal xValue
)

F# Copy

static member Atan2 : 
        yValue : decimal * 
        xValue : decimal -> decimal 

Parameters

yValue  Decimal

The y coordinate of a point.

xValue  Decimal

The x coordinate of a point.

Return Value

Decimal
An angle, θ, measured in radians, such that -π≤θ≤π, and tan(θ) = y / x, where (x, y) is a point in the Cartesian plane. Observe the following: For (x, y) in quadrant 1, 0 < θ < π/2.For (x, y) in quadrant 2, π/2 < θ≤π.For (x, y) in quadrant 3, -π < θ < -π/2.For (x, y) in quadrant 4, -π/2 < θ < 0.For points on the boundaries of the quadrants, the return value is the following:If y is 0 and x is not negative, θ = 0.If y is 0 and x is negative, θ = π. If y is positive and x is 0, θ = π/2. If y is negative and x is 0, θ = -π/2.