Patch: Add BID decimal floating point format

[Meissner, Michael]

> -----Original Message-----
> From: Florian Weimer [mailto:fw@deneb.enyo.de]
> Sent: Tuesday, February 27, 2007 4:20 PM
> To: Meissner, Michael
> Cc: gcc-patches@gcc.gnu.org; Harle, Christophe; H. J. Lu;
bje@au1.ibm.com;
> Janis Johnson
> Subject: Re: Patch: Add BID decimal floating point format
> 
> * Michael Meissner:
> 
> > Are there any objections or comments to patch?
> 
>  @item --enable-decimal-float
> +@itemx --enable-decimal-float=yes
> +@itemx --enable-decimal-float=no
> +@itemx --enable-decimal-float=bid
> +@itemx --enable-decimal-float=dpd
>  @itemx --disable-decimal-float
>  Enable (or disable) support for the C decimal floating point
> -extension.  This is enabled by default only on PowerPC GNU/Linux
> -systems.  Other systems may also support it, but require the user to
> -specifically enable it.
> +extension.  This is enabled by default only on PowerPC, i386, and
> +x86_64 GNU/Linux systems.  Other systems may also support it, but
> +require the user to specifically enable it.  You can optionally
> +control which decimal floating point format is used (either @var{bid}
> +or @var{dpd}).  The @var{bid} format is default on i386 and x86_64
> +systems, and the @var{dpd} format is default on PowerPC systems.
> 
> @samp{bid} and @samp{dpd} instead of @var{bid} and @var{dpd} (@var{}
> is intended for metasyntactic variables only and is rendered in
> CAPITAL LETTERS in plain text).
> 
> Are DPD and BID universal terms?  If not, it might make sense to
> reference a definition (or provide one).
> 

Good point.  I'll dig up the appropriate expansion of the acronyms or
reference IEEE 754R.

--
Michael Meissner
AMD, MS 83-29
90 Central Street
Boxborough, MA 01719