Returns the angle whose tangent is the specified number.
- Parameters
-
value | A number representing a tangent. |
- Returns
- An angle, A, measured in radians, such that -PI/2 <= ? <= PI/2.
-or-
math::NaN if value equals math::NaN, -PI/2 rounded to double precision (-1.5707963267949) if d equals math::negative_infinity, or PI/2 rounded to double precision (1.5707963267949) if d equals math::positive_infinity