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Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered()
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function |
Date: |
Wed, 13 Apr 2011 20:18:36 +0200 |
User-agent: |
Mutt/1.5.20 (2009-06-14) |
On Wed, Apr 13, 2011 at 08:53:27AM -0700, Richard Henderson wrote:
> On 04/13/2011 08:42 AM, Peter Maydell wrote:
> > On 13 April 2011 16:38, Richard Henderson <address@hidden> wrote:
> >> [ Odd, the original thread doesn't seem to have arrived here. ]
> >>
> >> On 04/13/2011 07:52 AM, Peter Maydell wrote:
> >>> So I think you want the _quiet version here. (And helper_cmpteq
> >>> needs to use float64_eq_quiet rather than float64_eq.)
> >>
> >> Yes, the _quiet version is what's needed for all comparisons.
> >
> > Really all comparisons, including CMPTLT, CMPTLE?
>
> Oops, no. CMPTLE and CMPTLT in Table B-2 are on the next page,
> and clearly indicate that they signal InvalidOP for QNaN.
>
> So it's just CMPTUN and CMPTEQ that should not signal on QNaN.
>
Thanks to both of you for digging into the manuals, the information I
have found in the manual I have were not so clear. I'll fix that in the
next version.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
- [Qemu-devel] [PATCH 07/19] softfloat-native: add float*_unordered_quiet() functions, (continued)
- [Qemu-devel] [PATCH 07/19] softfloat-native: add float*_unordered_quiet() functions, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 06/19] softfloat: add float*_unordered_{, quiet}() functions, Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 15/19] target-arm: fix wrong usage of floatx80_eq_quiet(), Aurelien Jarno, 2011/04/12
- [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Aurelien Jarno, 2011/04/12
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Peter Maydell, 2011/04/14
- Re: [Qemu-devel] [PATCH 08/19] target-alpha: use new float64_unordered() function, Richard Henderson, 2011/04/14
[Qemu-devel] [PATCH 11/19] softfloat: rename float*_eq() into float*_eq_quiet(), Aurelien Jarno, 2011/04/12
[Qemu-devel] [PATCH 19/19] target-mips: don't hardcode softfloat exception bits, Aurelien Jarno, 2011/04/12
[Qemu-devel] [PATCH 13/19] softfloat: move float*_eq and float*_eq_quiet, Aurelien Jarno, 2011/04/12
[Qemu-devel] [PATCH 18/19] target-mips: simplify FP comparisons, Aurelien Jarno, 2011/04/12