raberm

// ©2015 Massimiliano Raber, MIT license
// @IBDesignable/@IBInspectable GradientView (linear gradient, 2 stops)

import UIKit

@IBDesignable
class GradientView: UIView {
	
	@IBInspectable var startColor: UIColor = UIColor.whiteColor() {
		didSet {

raberm

extension String {
    func htmlAttributedString() -> NSAttributedString? {
        guard let data = self.data(using: String.Encoding.utf16, allowLossyConversion: false) else { return nil }
        guard let html = try? NSMutableAttributedString(
            data: data,
            options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html],
            documentAttributes: nil) else { return nil }
        return html
    }
}

raberm

float frexp(float x, out float e)
{
   e = ceil(log2(x));
   return(x * exp2(-e));
}

x = 0.15625;
x = -118.62500;
v = Ceiling[Log2[Abs[x]]] - 1