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[Qemu-devel] Re: [PATCH] softfloat: fix floatx80_is_{quiet, signaling}_n
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From: |
Peter Maydell |
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Subject: |
[Qemu-devel] Re: [PATCH] softfloat: fix floatx80_is_{quiet, signaling}_nan() |
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Date: |
Thu, 13 Jan 2011 06:15:57 -0600 |
On 13 January 2011 01:31, Aurelien Jarno <address@hidden> wrote:
> On Wed, Jan 12, 2011 at 03:05:10PM -0600, Peter Maydell wrote:
>> Actually, will
>> return ((a.high & 0x7fff) == 0x7fff) && (a.low >=
>> LIT64(0x4000000000000000));
>> do? Untested but I think it will do the right thing. I'm not sure
>
> The explicit bit might be one for a NaN, so you should filter it first.
Whoops, yes, explicit-bit-set but signalling-bit-clear would be
a false positive.
-- PMM