This functionality is only available for certain module packages.

atan2(y,x)

Arc tangent of rectangular coordinates x and y in the range of -PI to PI in radians.

Special cases:

The result of the calculation must correspond to the exact result down to the last two decimal places. The results must be semi-monotonic.

atan2(y,x)
Arguments Integer/Double y Coordinate
Integer/Double x Coordinate
Return value Double