cpp/numeric/valarray/atan2

Computes the inverse tangent of using the signs of arguments to correctly determine quadrant.

@1@ Computes the inverse tangent of each pair of corresponding values from and.

The behavior is undefined if. @2@ Computes the inverse tangent of and each value in the numeric array. @3@ Computes the inverse tangent of and each value in the numeric array.

Return value
A numeric array containing the results of computation of inverse tangent.