<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>node</tt></i>:</span></td><td>a node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastNumberToBoolean"/>xmlXPathCastNumberToBoolean ()</h3><pre class="programlisting">int	xmlXPathCastNumberToBoolean	(double val)<br/></pre><p>Converts a number to its boolean value</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastNumberToString"/>xmlXPathCastNumberToString ()</h3><pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastNumberToString	(double val)<br/></pre><p>Converts a number to its string value.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a number</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a newly allocated string.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastStringToBoolean"/>xmlXPathCastStringToBoolean ()</h3><pre class="programlisting">int	xmlXPathCastStringToBoolean	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val)<br/></pre><p>Converts a string to its boolean value</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastStringToNumber"/>xmlXPathCastStringToNumber ()</h3><pre class="programlisting">double	xmlXPathCastStringToNumber	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * val)<br/></pre><p>Converts a string to its number value</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a string</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastToBoolean"/>xmlXPathCastToBoolean ()</h3><pre class="programlisting">int	xmlXPathCastToBoolean		(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an XPath object to its boolean value</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the boolean value</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastToNumber"/>xmlXPathCastToNumber ()</h3><pre class="programlisting">double	xmlXPathCastToNumber		(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an XPath object to its number value</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number value</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCastToString"/>xmlXPathCastToString ()</h3><pre class="programlisting"><a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> *	xmlXPathCastToString	(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an existing object to its string() equivalent</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the allocated string value of the object, NULL in case of error. It's up to the caller to free the string memory with xmlFree().</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCmpNodes"/>xmlXPathCmpNodes ()</h3><pre class="programlisting">int	xmlXPathCmpNodes		(<a href="libxml2-tree.html#xmlNodePtr">xmlNodePtr</a> node1, <br/>					 <a href="libxml2-tree.html#xmlNodePtr">xmlNodePtr</a> node2)<br/></pre><p>Compare two nodes w.r.t document order</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>node1</tt></i>:</span></td><td>the first node</td></tr><tr><td><span class="term"><i><tt>node2</tt></i>:</span></td><td>the second node</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-2 in case of error 1 if first point &lt; second point, 0 if it's the same node, -1 otherwise</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCompile"/>xmlXPathCompile ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	xmlXPathCompile	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str)<br/></pre><p>Compile an XPath expression</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> resulting from the compilation or NULL. the caller has to free the object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCompiledEval"/>xmlXPathCompiledEval ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathCompiledEval	(<a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br/>						 <a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)<br/></pre><p>Evaluate the Precompiled XPath expression in the given context.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the compiled XPath expression</td></tr><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCompiledEvalToBoolean"/>xmlXPathCompiledEvalToBoolean ()</h3><pre class="programlisting">int	xmlXPathCompiledEvalToBoolean	(<a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br/>					 <a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)<br/></pre><p>Applies the XPath boolean() function on the result of the given compiled expression.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the compiled XPath expression</td></tr><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if the expression evaluated to true, 0 if to false and -1 in API and internal errors.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathContextSetCache"/>xmlXPathContextSetCache ()</h3><pre class="programlisting">int	xmlXPathContextSetCache		(<a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br/>					 int active, <br/>					 int value, <br/>					 int options)<br/></pre><p>Creates/frees an object cache on the XPath context. If activates XPath objects (xmlXPathObject) will be cached internally to be reused. @options: 0: This will set the XPath object caching: @value: This will set the maximum number of XPath objects to be cached per slot There are 5 slots for: node-set, string, number, boolean, and misc objects. Use &lt;0 for the default number (100). Other values for @options have currently no effect.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>active</tt></i>:</span></td><td>enables/disables (creates/frees) the cache</td></tr><tr><td><span class="term"><i><tt>value</tt></i>:</span></td><td>a value with semantics dependant on @options</td></tr><tr><td><span class="term"><i><tt>options</tt></i>:</span></td><td>options (currently only the value 0 is used)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 if the setting succeeded, and -1 on API or internal errors.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathConvertBoolean"/>xmlXPathConvertBoolean ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathConvertBoolean	(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an existing object to its boolean() equivalent</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathConvertNumber"/>xmlXPathConvertNumber ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathConvertNumber	(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an existing object to its number() equivalent</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathConvertString"/>xmlXPathConvertString ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathConvertString	(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>Converts an existing object to its string() equivalent</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the new object, the old one is freed (or the operation is done directly on @val)</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathCtxtCompile"/>xmlXPathCtxtCompile ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a>	xmlXPathCtxtCompile	(<a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br/>						 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str)<br/></pre><p>Compile an XPath expression</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>an XPath context</td></tr><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> resulting from the compilation or NULL. the caller has to free the object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathEval"/>xmlXPathEval ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEval	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br/>					 <a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctx)<br/></pre><p>Evaluate the XPath Location Path in the given context.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathEvalExpression"/>xmlXPathEvalExpression ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathEvalExpression	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br/>						 <a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)<br/></pre><p>Evaluate the XPath expression in the given context.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>str</tt></i>:</span></td><td>the XPath expression</td></tr><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> resulting from the evaluation or NULL. the caller has to free the object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathEvalPredicate"/>xmlXPathEvalPredicate ()</h3><pre class="programlisting">int	xmlXPathEvalPredicate		(<a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br/>					 <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> res)<br/></pre><p>Evaluate a predicate result for the current node. A PredicateExpr is evaluated by evaluating the Expr and converting the result to a boolean. If the result is a number, the result will be converted to true if the number is equal to the position of the context node in the context node list (as returned by the position function) and will be converted to false otherwise; if the result is not a number, then the result will be converted as if by a call to the boolean function.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the XPath context</td></tr><tr><td><span class="term"><i><tt>res</tt></i>:</span></td><td>the Predicate Expression evaluation result</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if predicate is true, 0 otherwise</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathFreeCompExpr"/>xmlXPathFreeCompExpr ()</h3><pre class="programlisting">void	xmlXPathFreeCompExpr		(<a href="libxml2-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp)<br/></pre><p>Free up the memory allocated by @comp</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>an XPATH comp</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathFreeContext"/>xmlXPathFreeContext ()</h3><pre class="programlisting">void	xmlXPathFreeContext		(<a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)<br/></pre><p>Free up an <a href="libxml2-xpath.html#xmlXPathContext">xmlXPathContext</a></p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>the context to free</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathFreeNodeSet"/>xmlXPathFreeNodeSet ()</h3><pre class="programlisting">void	xmlXPathFreeNodeSet		(<a href="libxml2-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> obj)<br/></pre><p>Free the NodeSet compound (not the actual nodes !).</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>obj</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> to free</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathFreeNodeSetList"/>xmlXPathFreeNodeSetList ()</h3><pre class="programlisting">void	xmlXPathFreeNodeSetList		(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> obj)<br/></pre><p>Free up the <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> @obj but don't deallocate the objects in the list contrary to xmlXPathFreeObject().</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>obj</tt></i>:</span></td><td>an existing NodeSetList object</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathFreeObject"/>xmlXPathFreeObject ()</h3><pre class="programlisting">void	xmlXPathFreeObject		(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> obj)<br/></pre><p>Free up an <a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> object.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>obj</tt></i>:</span></td><td>the object to free</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathInit"/>xmlXPathInit ()</h3><pre class="programlisting">void	xmlXPathInit			(void)<br/></pre><p>Initialize the XPath environment</p></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathIsInf"/>xmlXPathIsInf ()</h3><pre class="programlisting">int	xmlXPathIsInf			(double val)<br/></pre><p>Provides a portable isinf() function to detect whether a double is a +Infinite or -Infinite. Based on trio code http://sourceforge.net/projects/ctrio/</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a double value</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 vi the value is +Infinite, -1 if -Infinite, 0 otherwise</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathIsNaN"/>xmlXPathIsNaN ()</h3><pre class="programlisting">int	xmlXPathIsNaN			(double val)<br/></pre><p>Provides a portable isnan() function to detect whether a double is a NotaNumber. Based on trio code http://sourceforge.net/projects/ctrio/</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>a double value</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if the value is a NaN, 0 otherwise</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathNewContext"/>xmlXPathNewContext ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a>	xmlXPathNewContext	(<a href="libxml2-tree.html#xmlDocPtr">xmlDocPtr</a> doc)<br/></pre><p>Create a new <a href="libxml2-xpath.html#xmlXPathContext">xmlXPathContext</a></p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>doc</tt></i>:</span></td><td>the XML document</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml2-xpath.html#xmlXPathContext">xmlXPathContext</a> just allocated. The caller will need to free it.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathNodeSetCreate"/>xmlXPathNodeSetCreate ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a>	xmlXPathNodeSetCreate	(<a href="libxml2-tree.html#xmlNodePtr">xmlNodePtr</a> val)<br/></pre><p>Create a new <a href="libxml2-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> of type double and of value @val</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>an initial xmlNodePtr, or NULL</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the newly created object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathObjectCopy"/>xmlXPathObjectCopy ()</h3><pre class="programlisting"><a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	xmlXPathObjectCopy	(<a href="libxml2-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)<br/></pre><p>allocate a new copy of a given object</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>val</tt></i>:</span></td><td>the original object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the newly created object.</td></tr></tbody></table></div></div>        <hr/>        <div class="refsect2" lang="en"><h3><a name="xmlXPathOrderDocElems"/>xmlXPathOrderDocElems ()</h3><pre class="programlisting">long	xmlXPathOrderDocElems		(<a href="libxml2-tree.html#xmlDocPtr">xmlDocPtr</a> doc)<br/></pre><p>Call this routine to speed up XPath computation on static documents. This stamps all the element nodes with the document order Like for line information, the order is kept in the element-&gt;content field, the value stored is actually - the node number (starting at -1) to be able to differentiate from line numbers.</p><div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>doc</tt></i>:</span></td><td>an input document</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of elements found in the document or -1 in case of error.</td></tr></tbody></table></div></div>        <hr/>      </div>    </div>  </body></html>