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Re: Draft C bindings for IEEE 754-2008 part 4 now available
- From: Vincent Lefevre <vincent+gcc at vinc17 dot org>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>
- Cc: Florian Weimer <fweimer at redhat dot com>, gcc at gcc dot gnu dot org, libc-alpha at sourceware dot org
- Date: Tue, 7 Jan 2014 17:19:37 +0100
- Subject: Re: Draft C bindings for IEEE 754-2008 part 4 now available
- Authentication-results: sourceware.org; auth=none
- References: <Pine dot LNX dot 4 dot 64 dot 1401041812480 dot 26743 at digraph dot polyomino dot org dot uk> <52CBD17A dot 50403 at redhat dot com> <Pine dot LNX dot 4 dot 64 dot 1401071428040 dot 18708 at digraph dot polyomino dot org dot uk> <Pine dot LNX dot 4 dot 64 dot 1401071446180 dot 18708 at digraph dot polyomino dot org dot uk>
On 2014-01-07 14:48:01 +0000, Joseph S. Myers wrote:
> (Except that the IEEE 754 reduction operations - subclause 9.4 - return
> "an implementation-defined approximation". But 9.2 is "Recommended
> correctly rounded functions", e.g. exp and sin, for which the strictly
> corresponding C functions are crexp and crsin.)
Some of the reduction operations may be standardized with the
correct rounding requirement in the future IEEE 1788 standard
on interval arithmetic (even though I think that such operations
do not belong to IEEE 1788), if it passes. In any case, they
should also have their own correctly rounded version.
--
Vincent Lefèvre <vincent@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)