Swift - erf() Function
The Swift erf() function returns the error function of the argument. The error function of x is defined as:
Error functions usually occur in probability, statistics and partial differential equation describing diffusion.
Syntax
In Foundation framework, it is defined as follows:
public func erf(_ x: CGFloat) -> CGFloat public func erf(_ x: Float) -> Float public func erf(_ x: Float80) -> Float80 public func erf(_ __x: Double) -> Double
Parameters
x |
Specify the value. |
Return Value
Returns the error function of the argument.
Example:
In the example below, erf() function returns the error function of the given value.
import Foundation
print("erf(-2.0) = \(erf(-2.0))")
print("erf(-1.0) = \(erf(-1.0))")
print("erf(0.0) = \(erf(0.0))")
print("erf(1.0) = \(erf(1.0))")
print("erf(2.0) = \(erf(2.0))")
The output of the above code will be:
erf(-2.0) = -0.9953222650189527 erf(-1.0) = -0.8427007929497149 erf(0.0) = 0.0 erf(1.0) = 0.8427007929497149 erf(2.0) = 0.9953222650189527
❮ Swift Math Functions
