peiyongz 2002/12/16 15:46:58
Modified: c/doc schema.xml
Log:
interpretation for out-of-bound float/double value.
Revision Changes Path
1.19 +68 -4 xml-xerces/c/doc/schema.xml
Index: schema.xml
===================================================================
RCS file: /home/cvs/xml-xerces/c/doc/schema.xml,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -r1.18 -r1.19
--- schema.xml 17 Jun 2002 15:32:33 -0000 1.18
+++ schema.xml 16 Dec 2002 23:46:57 -0000 1.19
@@ -36,14 +36,78 @@
<anchor name="interpretation"/>
<s2 title="Interpretation of Areas that are Unclear or
Implementation-Dependent">
- <ul>
- <li>We have interpreted the specs as requiring <keyref> Identity
Constraints to refer to
+ <s3 title="keyref">
+ <p>
+ We have interpreted the specs as requiring <keyref> Identity
Constraints to refer to
<key> or <unique> identity constraints within the scope
of the elements to which
the <keyref> is attached. This interpretation is at variance
with the Schema Primer, which
contains an example with a <keyref> declared on an element
used inside the element of its
corresponding <key>.
- </li>
- </ul>
+ </p>
+ </s3>
+
+ <s3 title="out-of-bound float values">
+ <p>
+ For float data, the specs does not explicitly specify how to deal
with
+ out-of-bound data. Xerces converts these values as below
+ </p>
+ <table>
+ <tr>
+ <td>Values in range</td>
+ <td>Values converted</td>
+ </tr>
+ <tr>
+ <td>less than -3.402823466e+38 </td>
+ <td>-INF</td>
+ </tr>
+ <tr>
+ <td>greater than -1.175494351e-38 and less than -0 </td>
+ <td>-0</td>
+ </tr>
+ <tr>
+ <td>greater than +0 and less than +1.175494351e-38 </td>
+ <td>+0</td>
+ </tr>
+ <tr>
+ <td>greater than +3.402823466e+38 </td>
+ <td>+INF</td>
+ </tr>
+ </table>
+ <p>
+ The effect of this conversion would invalidate an instance data,
for example,
+ "1.1e-39", of a data type derived from float, with minExclusive
value '+0',
+ since "1.1e-39" is converted to "+0", which is the same as the
minExclusive.
+ </p>
+
+ </s3>
+
+ <s3 title="out-of-bound double values">
+ <p>
+ Similarly, Xerces converts double values as below
+ </p>
+ <table>
+ <tr>
+ <td>Values in range</td>
+ <td>Values converted</td>
+ </tr>
+ <tr>
+ <td>less than -1.7976931348623158e+308 </td>
+ <td>-INF</td>
+ </tr>
+ <tr>
+ <td>greater than -2.2250738585072014e-308 and less than -0
</td>
+ <td>-0</td>
+ </tr>
+ <tr>
+ <td>greater than +0 and less than +2.2250738585072014e-308
</td>
+ <td>+0</td>
+ </tr>
+ <tr>
+ <td>greater than +1.7976931348623158e+308 </td>
+ <td>+INF</td>
+ </tr>
+ </table>
+ </s3>
</s2>
<anchor name="usage"/>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
