Swift - atan() Function
The Swift atan() function returns arc tangent of a value. The returned value will be in the range -𝜋/2 through 𝜋/2.
Syntax
In Foundation framework, it is defined as follows:
public func atan(_ x: CGFloat) -> CGFloat public func atan(_ x: Float) -> Float public func atan(_ x: Float80) -> Float80 public func atan(_ __x: Double) -> Double
Parameters
x |
Specify the value. |
Return Value
Returns the arc tangent of the value.
Example:
In the example below, atan() function is used to is used to find out the arc tangent of a given value.
import Foundation
print("atan(0.0) = \(atan(0.0))")
print("atan(0.5) = \(atan(0.5))")
print("atan(1.0) = \(atan(1.0))")
print("atan(2.0) = \(atan(2.0))")
The output of the above code will be:
atan(0.0) = 0.0 atan(0.5) = 0.4636476090008061 atan(1.0) = 0.7853981633974483 atan(2.0) = 1.1071487177940904
❮ Swift Math Functions
