Swift - fdim() Function
The Swift fdim() function returns positive difference between x and y, if x > y, else returns zero. Mathematically, it can be expressed as:
fdim (x, y) = max (x-y, 0)
Syntax
In Foundation framework, it is defined as follows:
public func fdim(_ lhs: CGFloat, _ rhs: CGFloat) -> CGFloat public func fdim(_ lhs: Float, _ rhs: Float) -> Float public func fdim(_ lhs: Float80, _ rhs: Float80) -> Float80 public func fdim(_ __x: Double, _ __y: Double) -> Double
Parameters
x, lhs |
Specify the first value. |
y, rhs |
Specify the second value. |
Return Value
Returns the positive difference between x and y.
Example:
The example below shows the usage of fdim() function.
import Foundation
print("fdim(100.0, 50.0) = \(fdim(100.0, 50.0))")
print("fdim(50.0, -100.0) = \(fdim(50.0, -100.0))")
print("fdim(-50.0, 50.0) = \(fdim(-50.0, 50.0))")
print("fdim(-100.0, -50.0) = \(fdim(-100.0, -50.0))")
The output of the above code will be:
fdim(100.0, 50.0) = 50.0 fdim(50.0, -100.0) = 150.0 fdim(-50.0, 50.0) = 0.0 fdim(-100.0, -50.0) = 0.0
❮ Swift Math Functions
