title: Long Double in Swift
body: <p>In C, there is a type called <code>long double</code>, which on my machine is 16-bytes (128-bit). Is there any way to store a <code>long double</code> in Swift? I've tried type aliases (<code>typedef</code>s) of <code>long double</code> from an Objective-C header, but it doesn't show up in Swift. And functions returning <code>long double</code> (<code>powl</code>, <code>sqrtl</code>) don't show up neither.</p>
  
  <p>I know there's a <code>Float80</code> but that's only 80 bits, not 128 bits.</p>