System.Math.ArcTan2

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Delphi

function ArcTan2(const Y, X: Extended): Extended;
function ArcTan2(const Y, X: Double): Double;
function ArcTan2(const Y, X: Single): Single;

C++

extern DELPHI_PACKAGE System::Extended __fastcall ArcTan2(const System::Extended Y, const System::Extended X)/* overload */;

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.Math.pas System.Math.hpp	System.Math	System.Math

Description

Calculates the arctangent angle and quadrant of a given number.

ArcTan2 calculates ArcTan(Y/X), and returns an angle in the correct quadrant. The values of X and Y must be between –2⁶⁴ and 2⁶⁴. The return value is from -Pi to Pi radians.

See Also

• Mathematical Routines