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From: Richard Henderson <rth@twiddle.net>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Laurent Vivier <laurent@vivier.eu>,
	qemu-devel@nongnu.org, Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH v3 15/16] target-m68k: add more FPU instructions
Date: Fri, 17 Feb 2017 08:01:10 +1100	[thread overview]
Message-ID: <93272090-e43c-d877-bd2b-49bc19d7175b@twiddle.net> (raw)
In-Reply-To: <87poiiv3oz.fsf@linux-m68k.org>

On 02/16/2017 09:18 PM, Andreas Schwab wrote:
> There is no guarantee that the host long double has the same range and
> precision as floatx80.

Indeed not.  However, do you have another plan for implementing the 
trancendentals?  I'm quite happy using the host long double libm as an 
estimate.  Which is better than at least BasiliskII, which uses the host double.


r~

  reply	other threads:[~2017-02-16 21:01 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-07  0:59 [Qemu-devel] [PATCH v3 00/16] target-m68k: implement 680x0 FPU Laurent Vivier
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 01/16] softfloat: define 680x0 specific values Laurent Vivier
2017-02-08 21:30   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 02/16] softloat: disable floatx80_invalid_encoding() for m68k Laurent Vivier
2017-02-08 21:32   ` Richard Henderson
2017-02-08 22:58   ` Peter Maydell
2017-02-09  8:07     ` Laurent Vivier
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 03/16] target-m68k: move FPU helpers to fpu_helper.c Laurent Vivier
2017-02-08 21:33   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 04/16] target-m68k: define ext_opsize Laurent Vivier
2017-02-08 21:33   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 05/16] target-m68k: use floatx80 internally Laurent Vivier
2017-02-15 22:59   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 06/16] target-m68k: add FPCR and FPSR Laurent Vivier
2017-02-16  1:10   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 07/16] target-m68k: manage FPU exceptions Laurent Vivier
2017-02-16  1:16   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 08/16] target-m68k: define 96bit FP registers for gdb on 680x0 Laurent Vivier
2017-02-16  1:17   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 09/16] target-m68k: add fmovem Laurent Vivier
2017-02-16  1:22   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 10/16] target-m68k: add fscc Laurent Vivier
2017-02-16  1:27   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 11/16] target-m68k: add fmovecr Laurent Vivier
2017-02-16  1:28   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 12/16] target-m68k: add fscale, fgetman, fgetexp and fmod Laurent Vivier
2017-02-16  1:34   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 13/16] target-m68k: add fsglmul and fsgldiv Laurent Vivier
2017-02-16  1:36   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 14/16] target-m68k: add explicit single and double precision operations Laurent Vivier
2017-02-16  1:41   ` Richard Henderson
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 15/16] target-m68k: add more FPU instructions Laurent Vivier
2017-02-16  1:46   ` Richard Henderson
2017-02-16 10:18     ` Andreas Schwab
2017-02-16 21:01       ` Richard Henderson [this message]
2017-02-17  9:06         ` Andreas Schwab
2017-02-07  0:59 ` [Qemu-devel] [PATCH v3 16/16] target-m68k: add fsincos Laurent Vivier
2017-02-07  1:25 ` [Qemu-devel] [PATCH v3 00/16] target-m68k: implement 680x0 FPU no-reply

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