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Re: Floating point proposal from left field... [long]

From: Jane Hunter <jane@dstc.edu.au>
Date: Tue, 22 Feb 2000 10:11:54 +1000
Message-Id: <200002220012.KAA21172@piglet.dstc.edu.au>
To: www-xml-schema-comments@w3.org
This appears to be the most relevant existing subject for a problem which I'm 
having.

I'm trying to represent MPEG-7 descriptors using XML Schema. In particular: 
"xpeak is a floating point number from range [0-1.0] represented by 16 bits 
(uniform quantisation)..."

I'd like to do the following:

<simpleType name="16_bit_float_0-1" base="float">
    <minInclusive value='0'/>
    <maxInclusive value='1.0'/>
    <length value='16'/>
</simpleType>

But the primitive datatype float doesn't have a length facet. Is there an 
alternative way to represent a 16 bit float?

regards,
Jane Hunter
+----------------------------------+---------------------------------------+
| Dr Jane Hunter                   | Senior Research Scientist             |
| DSTC Pty Ltd                     | Distributed Systems Technology CRC    |
| Level 7, General Purpose South   | Tel   : +61 7 3365 4310               |
| The University of Queensland     | Fax   : +61 7 3365 4311               |
| Queensland 4072, Australia       | Email : jane@dstc.edu.au              |
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Received on Monday, 21 February 2000 19:12:11 GMT

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