Resize Image with Swift 3

resizeImage.swift

    func resizeImage(image: UIImage, newWidth: CGFloat) -> UIImage {
        
        let scale = newWidth / image.size.width
        let newHeight = image.size.height * scale
        
        UIGraphicsBeginImageContext(CGSize(width: newWidth, height: newHeight))
        
        
        image.draw(in: CGRect(x: 0, y: 0,width: newWidth, height: newHeight))
        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        return newImage!
    }
    
    func resizeToScreenSize(image: UIImage)->UIImage{
        
        let screenSize = self.view.bounds.size

        
        return resizeImage(image: image, newWidth: screenSize.width)
    }

What interpolation method is used to resize? Is there any way to choose different interpolation methods? Thanks!