On Mon, Sep 28, 2009 at 5:52 AM, Andrew Coppin
wren ng thornton wrote:
Andrew Coppin wrote:
While we're on the subject... I understand that certain FPUs support 80-bit precision. Is there any way to get at that? Or is this going to require FFI too?
Perhaps you want Foreign.C.Types.CLDouble ?
http://hackage.haskell.org/packages/archive/base/latest/doc/html/Foreign-C-T... http://en.wikipedia.org/wiki/Long_double
(Or do you really want to ensure that it's 80-bits regardless of platform and the whims of the C compiler?)
Yep, that'll do. :-)
From the source:
-- HACK: Currently no long double in the FFI, so we simply re-use double -- | Haskell type representing the C @long double@ type. FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE) I also believe that CLDouble is gone in GHC 6.12.1, since it isn't really there. Antoine