SYNOPSIS
        float atan2 (int|float y, int|float x)

DESCRIPTION
        Returns the argument's arcus tangent as if computed from <y>/<x>,
        except that the signs of both arguments are used to determine the
        quadrant of the result.

HISTORY
        LDMud 3.2.9 added integers as arguments.

SEE ALSO
        sin(E), cos(E), tan(E), asin(E), acos(E), atan(E)
