Swift - sqrt() Function
The Swift sqrt() function returns the square root of the given number.
Syntax
In Foundation framework, it is defined as follows:
public func sqrt(_ x: CGFloat) -> CGFloat public func sqrt(_ x: Float) -> Float public func sqrt(_ x: Float80) -> Float80 public func sqrt(_ __x: Double) -> Double
Parameters
x |
Specify a positive number. |
Return Value
Returns the square root of the specified number.
If the x is negative, it returns -nan.
Example:
In the example below, sqrt() function is used to find out the square root of the given number.
import Foundation
print("sqrt(-1.0) = \(sqrt(-1.0))")
print("sqrt(25.0) = \(sqrt(25.0))")
print("sqrt(64.0) = \(sqrt(64.0))")
print("sqrt(100.0) = \(sqrt(100.0))")
print("sqrt(500.0) = \(sqrt(500.0))")
The output of the above code will be:
sqrt(-1.0) = -nan sqrt(25.0) = 5.0 sqrt(64.0) = 8.0 sqrt(100.0) = 10.0 sqrt(500.0) = 22.360679774997898
❮ Swift Math Functions
