* Re: 128-bit precision
@ 2002-09-05 14:56 Robert Dewar
0 siblings, 0 replies; 5+ messages in thread
From: Robert Dewar @ 2002-09-05 14:56 UTC (permalink / raw)
To: herbert, herbert; +Cc: gcc
>>I am talking about real numbers. Sorry for the confusion.
I doubt that GCC will support real numbers of any precision. I suspect
you are asking about floating-point formats :-)
The answer is no, gcc on linux x86 machines will not support 128-bit
precision arithmetic operations.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 128-bit precision
2002-09-05 12:51 Benjamin Herbert
2002-09-05 13:18 ` Benjamin Herbert
2002-09-05 13:23 ` Richard Henderson
@ 2002-09-05 18:47 ` Jari & Tim Prince
2 siblings, 0 replies; 5+ messages in thread
From: Jari & Tim Prince @ 2002-09-05 18:47 UTC (permalink / raw)
To: Benjamin Herbert, gcc
----- Original Message -----
From: "Benjamin Herbert" <herbert@isis.visi.com>
To: <gcc@gcc.gnu.org>
Sent: Thursday, September 05, 2002 12:51 PM
Subject: 128-bit precision
>
> One of my researchers wants to test algorithms on a linux x86
> box that will eventually be run on a cray. The cray supports 128-bit
> precision arithmetic operations. He wants to use namely fortran, but
> also C and C++. Will gcc on a linux x86 machine support 128-bit
> precision arithmetic operations? If not does anybody know of a
> commercial product that can support what I am looking for.
>
gcc/g++ support the native x87 80-bit long double; g77 does not.
Several excellent commercial Fortran compilers support the 128-bit quad
precision, including Intel and Lahey. It will be quite slow. see
www.polyhedron.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 128-bit precision
2002-09-05 12:51 Benjamin Herbert
2002-09-05 13:18 ` Benjamin Herbert
@ 2002-09-05 13:23 ` Richard Henderson
2002-09-05 18:47 ` Jari & Tim Prince
2 siblings, 0 replies; 5+ messages in thread
From: Richard Henderson @ 2002-09-05 13:23 UTC (permalink / raw)
To: Benjamin Herbert; +Cc: gcc
On Thu, Sep 05, 2002 at 02:51:10PM -0500, Benjamin Herbert wrote:
> Will gcc on a linux x86 machine support 128-bit
> precision arithmetic operations?
No, sorry.
r~
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 128-bit precision
2002-09-05 12:51 Benjamin Herbert
@ 2002-09-05 13:18 ` Benjamin Herbert
2002-09-05 13:23 ` Richard Henderson
2002-09-05 18:47 ` Jari & Tim Prince
2 siblings, 0 replies; 5+ messages in thread
From: Benjamin Herbert @ 2002-09-05 13:18 UTC (permalink / raw)
To: Benjamin Herbert; +Cc: gcc
I am talking about real numbers. Sorry for the confusion.
On Thu, Sep 05, 2002 at 02:51:10PM -0500, Benjamin Herbert wrote:
>
> One of my researchers wants to test algorithms on a linux x86
> box that will eventually be run on a cray. The cray supports 128-bit
> precision arithmetic operations. He wants to use namely fortran, but
> also C and C++. Will gcc on a linux x86 machine support 128-bit
> precision arithmetic operations? If not does anybody know of a
> commercial product that can support what I am looking for.
>
> Thanks for the help.
>
> -Ben
^ permalink raw reply [flat|nested] 5+ messages in thread
* 128-bit precision
@ 2002-09-05 12:51 Benjamin Herbert
2002-09-05 13:18 ` Benjamin Herbert
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Benjamin Herbert @ 2002-09-05 12:51 UTC (permalink / raw)
To: gcc
One of my researchers wants to test algorithms on a linux x86
box that will eventually be run on a cray. The cray supports 128-bit
precision arithmetic operations. He wants to use namely fortran, but
also C and C++. Will gcc on a linux x86 machine support 128-bit
precision arithmetic operations? If not does anybody know of a
commercial product that can support what I am looking for.
Thanks for the help.
-Ben
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2002-09-06 1:47 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2002-09-05 14:56 128-bit precision Robert Dewar
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2002-09-05 12:51 Benjamin Herbert
2002-09-05 13:18 ` Benjamin Herbert
2002-09-05 13:23 ` Richard Henderson
2002-09-05 18:47 ` Jari & Tim Prince
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