Swift - copysign() Function
The Swift copysign() function returns a number with magnitude of first argument and sign of second argument.
Syntax
In Foundation framework, it is defined as follows:
public func copysign(_ __x: Double, _ __y: Double) -> Double
Parameters
x |
Specify a value providing the magnitude of the result. |
y |
Specify a value providing the sign of the result. |
Return Value
Returns a number with magnitude of first argument and sign of second argument.
Example:
In the example below, copysign() function returns a number with magnitude of first argument and sign of second argument.
import Foundation
print("copysign(-324.1, 4) = \(copysign(-324.1, 4))")
print("copysign(324.1, -4) = \(copysign(-324.1, -4))")
print("copysign(-500.5, -4.5) = \(copysign(-500.5, -4.5))")
print("copysign(500.5, 4.5) = \(copysign(500.5, 4.5))")
The output of the above code will be:
copysign(-324.1, 4) = 324.1 copysign(324.1, -4) = -324.1 copysign(-500.5, -4.5) = -500.5 copysign(500.5, 4.5) = 500.5
❮ Swift Math Functions
