Swift - nextafter() Function
The Swift nextafter() function returns the next representable value after first argument in the direction of second argument.
Syntax
In Foundation framework, it is defined as follows:
public func nextafter(_ lhs: CGFloat, _ rhs: CGFloat) -> CGFloat public func nextafter(_ lhs: Float, _ rhs: Float) -> Float public func nextafter(_ lhs: Float80, _ rhs: Float80) -> Float80 public func nextafter(_ __x: Double, _ __y: Double) -> Double
Parameters
lhs, x |
Specify the base value. |
rhs, y |
Specify the value toward which the return value is approximated. |
Return Value
Returns the next representable value after first argument in the direction of second argument.
Example:
The example below shows the usage of nextafter() function.
import Foundation
print("nextafter(0.8, 1) = \(nextafter(0.8, 1))")
print("nextafter(0.8, 0) = \(nextafter(0.8, 0))")
print("nextafter(-0.8, -1) = \(nextafter(-0.8, -1))")
print("nextafter(-0.8, 0) = \(nextafter(-0.8, 0))")
The output of the above code will be:
nextafter(0.8, 1) = 0.8000000000000002 nextafter(0.8, 0) = 0.7999999999999999 nextafter(-0.8, -1) = -0.8000000000000002 nextafter(-0.8, 0) = -0.7999999999999999
❮ Swift Math Functions
