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From: Jakub Jelinek <jakub@redhat.com>
To: Thomas Koenig <tkoenig@netcologne.de>
Cc: Michael Meissner <meissner@linux.ibm.com>,
	Segher Boessenkool <segher@kernel.crashing.org>,
	"fortran@gcc.gnu.org" <fortran@gcc.gnu.org>,
	Peter Bergner <bergner@linux.ibm.com>,
	gcc-patches@gcc.gnu.org, Bill Schmidt <wschmidt@linux.ibm.com>,
	David Edelsohn <dje.gcc@gmail.com>
Subject: Re: [power-ieee128] RFH: LTO broken
Date: Thu, 6 Jan 2022 21:10:55 +0100	[thread overview]
Message-ID: <20220106201055.GZ2646553@tucnak> (raw)
In-Reply-To: <c4996e62-4f2a-ad17-6fa9-29410166e91e@netcologne.de>

On Thu, Jan 06, 2022 at 09:01:54PM +0100, Thomas Koenig wrote:
> On 06.01.22 06:00, Michael Meissner via Fortran wrote:
> > I pushed the patch to the branch.
> 
> Test results are looking quite good right now.
> 
> What is still missing is the conversion for unformatted I/O, both
> ways.  I'll start doing some stuff on it. Just one question:
> What are functions that I can use to convert from IBM long double
> to IEEE and long double and vice versa?  It was in an e-mail somewhere,
> but I cannot find it at the moment.

Under the hood __extendkftf2 and __trunctfkf2, as can be seen on:
__ibm128 foo (__float128 x) { return x; }
__float128 bar (__ibm128 x) { return x; }

But, I really don't think libgfortran should call those by hand, just
use C casts, (GFC_REAL_17) var_with_GFC_REAL_16_type or
(GFC_REAL_16) var_with_GFC_REAL_17_type.

	Jakub


  reply	other threads:[~2022-01-06 20:11 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-03 15:36 [power-ieee128] libgfortran: -mabi=ieeelongdouble I/O Jakub Jelinek
2022-01-03 16:26 ` Jakub Jelinek
2022-01-03 17:03   ` Thomas Koenig
2022-01-03 20:00     ` [power-ieee128] libgfortran, fortran: " Jakub Jelinek
2022-01-03 22:43       ` Thomas Koenig
2022-01-04 11:07         ` [power-ieee128] RFH: LTO broken Jakub Jelinek
2022-01-04 13:41           ` [power-ieee128] libgfortran: -mabi=ieeelongdouble I/O fix Jakub Jelinek
2022-01-04 14:35             ` Thomas Koenig
2022-01-06  2:48           ` [power-ieee128] RFH: LTO broken Michael Meissner
2022-01-06  4:17           ` Michael Meissner
2022-01-06  5:00           ` Michael Meissner
2022-01-06 20:01             ` Thomas Koenig
2022-01-06 20:10               ` Jakub Jelinek [this message]
2022-01-07  9:22               ` [power-ieee128] OPEN CONV Jakub Jelinek
2022-01-07 10:26                 ` Thomas Koenig
2022-01-07 19:52                   ` Jakub Jelinek
2022-01-07 21:40                     ` Thomas Koenig
2022-01-07 21:48                       ` Jakub Jelinek
2022-01-08 10:07                         ` Thomas Koenig
2022-01-08 11:00                           ` Jakub Jelinek
2022-01-08 11:10                             ` Jakub Jelinek
2022-01-08 14:02                               ` Jakub Jelinek
2022-01-08 14:13                                 ` Thomas Koenig
2022-01-08 14:18                                   ` Jakub Jelinek
2022-01-08 18:59                                     ` Michael Meissner
2022-01-08 19:15                                       ` David Edelsohn
2022-01-08 19:37                                         ` Michael Meissner
2022-01-07 11:29               ` [power-ieee128] RFH: LTO broken Jakub Jelinek
2022-01-07 13:31                 ` Jakub Jelinek
2022-01-07 14:25                   ` Thomas Koenig
2022-01-07 16:46                     ` Jakub Jelinek
2022-01-07 21:33                       ` Thomas Koenig
2022-01-03 16:48 ` [power-ieee128] libgfortran: -mabi=ieeelongdouble I/O Thomas Koenig

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