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Re: [Bug 13010] New: [F+O 3.0] Which version of IEEE 754?

From: Michael Kay <mike@saxonica.com>
Date: Tue, 21 Jun 2011 22:35:52 +0100
Message-ID: <4E010EB8.4030802@saxonica.com>
To: public-qt-comments@w3.org
On 21/06/2011 21:15, Jim Melton wrote:
> Why, Mike?  We're not adopting precisionDecimal.  What other changes 
> are  in IEEE 754:2008 that we need to recognize?

The trigonometric functions are defined in terms of 754:2008. I've no 
idea whether 754:1985 defines these, or whether the definitions are the 
same. Having invested in a copy of the 754:2008 spec, I've no particular 
enthusiasm for buying a copy of 754:1985 just to find out whether it has 
changed.

I think we can be reasonably confident that there won't be any material 
changes to the definitions of double arithmetic, other than bug fixes, 
between the two: the spec is embodied in a lot of hardware.

Mike


>
>
> Just curious,
>    Jim
>
> At 6/21/2011 09:42 AM, bugzilla@jessica.w3.org wrote:
>> http://www.w3.org/Bugs/Public/show_bug.cgi?id=13010
>>
>>            Summary: [F+O 3.0] Which version of IEEE 754?
>>            Product: XPath / XQuery / XSLT
>>            Version: Working drafts
>>           Platform: PC
>>         OS/Version: Windows NT
>>             Status: NEW
>>           Severity: normal
>>           Priority: P2
>>          Component: Functions and Operators 3.0
>>         AssignedTo: mike@saxonica.com
>>         ReportedBy: mike@saxonica.com
>>          QAContact: public-qt-comments@w3.org
>>
>>
>> The Functions and Operators specification refers to both the 1985 and 
>> 2008
>> editions of IEEE 754. The references should probably all change to 
>> refer to the
>> 2008 edition.
>>
>> -- 
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>
> ========================================================================
> Jim Melton --- Editor of ISO/IEC 9075-* (SQL)     Phone: +1.801.942.0144
>   Chair, ISO/IEC JTC1/SC32 and W3C XML Query WG    Fax : +1.801.942.3345
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> ========================================================================
> =  Facts are facts.   But any opinions expressed are the opinions      =
> =  only of myself and may or may not reflect the opinions of anybody   =
> =  else with whom I may or may not have discussed the issues at hand.  =
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Received on Tuesday, 21 June 2011 21:36:26 GMT

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