Math.ArcTan2 Function

Calculates the arctangent angle and quadrant of a given number.

Pascal

function ArcTan2(const Y: Extended; const X: Extended): Extended;

C++

Extended ArcTan2(const Extended Y, const Extended X);

File

Math

Description

ArcTan2 calculates ArcTan(Y/X), and returns an angle in the correct quadrant. The values of X and Y must be between –2^64 and 2^64. In addition, the value of X can't be 0. The return value will fall in the range from -Pi to Pi radians.

What do you think about this topic? Send feedback!