## atan2 (Math)

Calculates 2-argument arctangent.

### Arguments

y

and x

are real numbers to calculate arctangent for.
### Return values

The resulting

angle

in radians as a real number in [-pi, pi] interval. It is calculated as arc tangent of y/x

, taking signs of both arguments into account to determine the quadrant.
### Example

Output:

1.190290
-1.190290
1.951303
-1.951303