[swift-dev] long double usage in swift

[Saleem Abdulrasool]

On Wed, Mar 23, 2016 at 3:54 PM, Joe Groff <jgroff at apple.com> wrote:

>
> > On Mar 23, 2016, at 2:25 PM, Saleem Abdulrasool via swift-dev <
> swift-dev at swift.org> wrote:
> >
> > Hi,
> >
> > I was looking at an ABI related issue on Windows.  In trying to
> construct a test case, it seems that I am unable to import a declaration
> using a long double into swift.  I was wondering if there is something
> about long double usage in swift that I am unaware of.
> >
> > Inputs/abi.h:
> >
> > float fp32_call(void);
> > double fp64_call(void);
> > long double fp80_call(void);
> >
> > Inputs/module.map:
> >
> > module abi {
> >   header "abi.h"
> > }
> >
> > test.swift:
> >
> > %swift -I Inputs -parse %s
> > import abi
> >
> > @inline(never)
> > func blackhole<T>(t : T) { }
> >
> > func test_floating_point() {
> > }
> >
> > Thanks!
>
> For better or worse, the failure mode for unsupported C declarations in
> the Clang importer is just to discard them. It sounds like we didn't add
> support for long double imports.


Yeah, I figured that out later thanks to the pointer that Alex provided.


>
> -Joe
>
>
-- 
Saleem Abdulrasool
compnerd (at) compnerd (dot) org
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