[swift-evolution] Add a type like Double but with much more precision?

[Joe Groff]

> On Dec 8, 2015, at 2:01 PM, Brent Royal-Gordon via swift-evolution <swift-evolution at swift.org> wrote:
> 
>> I need a floating-point type with more precision than Double.
> 
> There’s a Float80, at least on OS X. (Not sure about iOS or Linux.) Does that meet your needs?

Should be available on x86_64 or i386 Linux as well.

-Joe