Swift - exp2() Function
The Swift exp2() function returns 2 raised to the power of specified number, i.e., 2x.
Syntax
In Foundation framework, it is defined as follows:
public func exp2(_ x: CGFloat) -> CGFloat public func exp2(_ x: Float) -> Float public func exp2(_ x: Float80) -> Float80 public func exp2(_ __x: Double) -> Double
Parameters
x |
Specify the exponent of 2. |
Return Value
Returns 2 raised to the power of specified number, i.e., 2x.
Example:
In the example below, exp2() function is used to calculate 2 raised to the power of specified number.
import Foundation
print("exp2(-2.0) = \(exp2(-2.0))")
print("exp2(-1.0) = \(exp2(-1.0))")
print("exp2(0.0) = \(exp2(0.0))")
print("exp2(1.0) = \(exp2(1.0))")
print("exp2(2.0) = \(exp2(2.0))")
The output of the above code will be:
exp2(-2.0) = 0.25 exp2(-1.0) = 0.5 exp2(0.0) = 1.0 exp2(1.0) = 2.0 exp2(2.0) = 4.0
❮ Swift Math Functions
