Swift - exp() Function
The Swift exp() function returns e raised to the power of specified number, i.e., ex. Please note that e is the base of the natural system of logarithms, and its value is approximately 2.718282.
Syntax
In Foundation framework, it is defined as follows:
public func exp(_ x: CGFloat) -> CGFloat public func exp(_ x: Float) -> Float public func exp(_ x: Float80) -> Float80 public func exp(_ __x: Double) -> Double
Parameters
x |
Specify the exponent of e. |
Return Value
Returns e raised to the power of specified number.
Example:
In the example below, exp() function is used to calculate e raised to the power of specified number.
import Foundation
print("exp(-2.0) = \(exp(-2.0))")
print("exp(-1.0) = \(exp(-1.0))")
print("exp(0.0) = \(exp(0.0))")
print("exp(1.0) = \(exp(1.0))")
print("exp(2.0) = \(exp(2.0))")
The output of the above code will be:
exp(-2.0) = 0.1353352832366127 exp(-1.0) = 0.36787944117144233 exp(0.0) = 1.0 exp(1.0) = 2.718281828459045 exp(2.0) = 7.38905609893065
❮ Swift Math Functions
