On 2012-02-09 16:01:48 +0000, Andrew Haley wrote: > On 02/09/2012 03:59 PM, Richard Guenther wrote: > > On Thu, Feb 9, 2012 at 4:57 PM, Andrew Haley <a...@redhat.com> wrote: > >> On 02/09/2012 03:56 PM, Michael Matz wrote: > >>> Hi, > >>> > >>> On Thu, 9 Feb 2012, Andrew Haley wrote: > >>> > >>>> On 02/09/2012 03:28 PM, Richard Guenther wrote: > >>>>> So - do you have an idea what routines we can start off with to get > >>>>> a full C99 set of routines for float, double and long double? The last > >>>>> time I was exploring the idea again I was looking at the BSD libm. > >>>> > >>>> I'd start with INRIA's crlibm. > >>> > >>> Not complete. Too slow. > >> > >> Not complete, fair enough. But it's the fastest accurate one, > >> isn't it? > > > > Maybe. Nothing would prevent us from composing from multiple sources > > of course. crlibm also only provides double precision routines. > > Okay, but the crlibm algorithms could be extended to long > doubles and, presumably, floats. Where's Vincent Lefevre > when you need him? :-)
I'm a bit late at reading and answering all my mail. :) Our team has new tools to support other precisions, so that long double would be possible. Also note that CRlibm supports the 4 rounding modes, while the IBM Accurate Mathematical Library currently used in glibc behaves erratically (e.g. can even crash) on directed rounding modes. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
