<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="SHORTCUT ICON" href="/favicon.ico" /><style type="text/css">TD {font-family: Verdana,Arial,Helvetica}BODY {font-family: Verdana,Arial,Helvetica; margin-top: 2em; margin-left: 0em; margin-right: 0em}H1 {font-family: Verdana,Arial,Helvetica}H2 {font-family: Verdana,Arial,Helvetica}H3 {font-family: Verdana,Arial,Helvetica}A:link, A:visited, A:active { text-decoration: underline }</style><style type="text/css"> div.deprecated pre.programlisting {border-style: double;border-color:red} pre.programlisting {border-style: double;background: #EECFA1} </style><title>Module xpathInternals from libxml2</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" width="100%" 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/></a></td><th align="center"><a href="../index.html">The XML C parser and toolkit of Gnome</a></th><th align="right"><a href="libxml-xpointer.html">xpointer</a></th><td><a accesskey="n" href="libxml-xpointer.html"><img src="right.png" width="24" height="24" border="0" alt="Next" /></a></td></tr></table><p>internal interfaces for XML Path Language implementation used to build new modules on top of XPath like XPointer and XSLT </p><h2>Table of Contents</h2><pre class="programlisting">#define <a href="#CAST_TO_BOOLEAN">CAST_TO_BOOLEAN</a></pre><pre class="programlisting">#define <a href="#CAST_TO_NUMBER">CAST_TO_NUMBER</a></pre><pre class="programlisting">#define <a href="#CAST_TO_STRING">CAST_TO_STRING</a></pre><pre class="programlisting">#define <a href="#CHECK_ARITY">CHECK_ARITY</a></pre><pre class="programlisting">#define <a href="#CHECK_ERROR">CHECK_ERROR</a></pre><pre class="programlisting">#define <a href="#CHECK_ERROR0">CHECK_ERROR0</a></pre><pre class="programlisting">#define <a href="#CHECK_TYPE">CHECK_TYPE</a></pre><pre class="programlisting">#define <a href="#CHECK_TYPE0">CHECK_TYPE0</a></pre><pre class="programlisting">#define <a href="#XP_ERROR">XP_ERROR</a></pre><pre class="programlisting">#define <a href="#XP_ERROR0">XP_ERROR0</a></pre><pre class="programlisting">#define <a href="#xmlXPathCheckError">xmlXPathCheckError</a></pre><pre class="programlisting">#define <a href="#xmlXPathEmptyNodeSet">xmlXPathEmptyNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetContextNode">xmlXPathGetContextNode</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetDocument">xmlXPathGetDocument</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetError">xmlXPathGetError</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnBoolean">xmlXPathReturnBoolean</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnEmptyNodeSet">xmlXPathReturnEmptyNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnEmptyString">xmlXPathReturnEmptyString</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnExternal">xmlXPathReturnExternal</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnFalse">xmlXPathReturnFalse</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnNodeSet">xmlXPathReturnNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnNumber">xmlXPathReturnNumber</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnString">xmlXPathReturnString</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnTrue">xmlXPathReturnTrue</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetArityError">xmlXPathSetArityError</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetError">xmlXPathSetError</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetTypeError">xmlXPathSetTypeError</a></pre><pre class="programlisting">#define <a href="#xmlXPathStackIsExternal">xmlXPathStackIsExternal</a></pre><pre class="programlisting">#define <a href="#xmlXPathStackIsNodeSet">xmlXPathStackIsNodeSet</a></pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#valuePop">valuePop</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">int <a href="#valuePush">valuePush</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre><pre class="programlisting">void <a href="#xmlXPathAddValues">xmlXPathAddValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathBooleanFunction">xmlXPathBooleanFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathCeilingFunction">xmlXPathCeilingFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">int <a href="#xmlXPathCompareValues">xmlXPathCompareValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int inf, <br /> int strict)</pre><pre class="programlisting">void <a href="#xmlXPathConcatFunction">xmlXPathConcatFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathContainsFunction">xmlXPathContainsFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathCountFunction">xmlXPathCountFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathDebugDumpCompExpr">xmlXPathDebugDumpCompExpr</a> (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br /> int depth)</pre><pre class="programlisting">void <a href="#xmlXPathDebugDumpObject">xmlXPathDebugDumpObject</a> (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur, <br /> int depth)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDifference">xmlXPathDifference</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDistinct">xmlXPathDistinct</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDistinctSorted">xmlXPathDistinctSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)</pre><pre class="programlisting">void <a href="#xmlXPathDivValues">xmlXPathDivValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">int <a href="#xmlXPathEqualValues">xmlXPathEqualValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathErr">xmlXPathErr</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int error)</pre><pre class="programlisting">void <a href="#xmlXPathEvalExpr">xmlXPathEvalExpr</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">int <a href="#xmlXPathEvaluatePredicateResult">xmlXPathEvaluatePredicateResult</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> res)</pre><pre class="programlisting">void <a href="#xmlXPathFalseFunction">xmlXPathFalseFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathFloorFunction">xmlXPathFloorFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathFreeParserContext">xmlXPathFreeParserContext</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> <a href="#xmlXPathFunctionLookup">xmlXPathFunctionLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> <a href="#xmlXPathFunctionLookupNS">xmlXPathFunctionLookupNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre><pre class="programlisting">int <a href="#xmlXPathHasSameNodes">xmlXPathHasSameNodes</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting">void <a href="#xmlXPathIdFunction">xmlXPathIdFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathIntersection">xmlXPathIntersection</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting">int <a href="#xmlXPathIsNodeType">xmlXPathIsNodeType</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre><pre class="programlisting">void <a href="#xmlXPathLangFunction">xmlXPathLangFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathLastFunction">xmlXPathLastFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathLeading">xmlXPathLeading</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathLeadingSorted">xmlXPathLeadingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting">void <a href="#xmlXPathLocalNameFunction">xmlXPathLocalNameFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathModValues">xmlXPathModValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathMultValues">xmlXPathMultValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathNamespaceURIFunction">xmlXPathNamespaceURIFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewBoolean">xmlXPathNewBoolean</a> (int val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewCString">xmlXPathNewCString</a> (const char * val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewFloat">xmlXPathNewFloat</a> (double val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewNodeSet">xmlXPathNewNodeSet</a> (<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewNodeSetList">xmlXPathNewNodeSetList</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> <a href="#xmlXPathNewParserContext">xmlXPathNewParserContext</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br /> <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewString">xmlXPathNewString</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewValueTree">xmlXPathNewValueTree</a> (<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAncestor">xmlXPathNextAncestor</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAncestorOrSelf">xmlXPathNextAncestorOrSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAttribute">xmlXPathNextAttribute</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextChild">xmlXPathNextChild</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextDescendant">xmlXPathNextDescendant</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextDescendantOrSelf">xmlXPathNextDescendantOrSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextFollowing">xmlXPathNextFollowing</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextFollowingSibling">xmlXPathNextFollowingSibling</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextNamespace">xmlXPathNextNamespace</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextParent">xmlXPathNextParent</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextPreceding">xmlXPathNextPreceding</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextPrecedingSibling">xmlXPathNextPrecedingSibling</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextSelf">xmlXPathNextSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeLeading">xmlXPathNodeLeading</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeLeadingSorted">xmlXPathNodeLeadingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre><pre class="programlisting">int <a href="#xmlXPathNodeSetAdd">xmlXPathNodeSetAdd</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting">int <a href="#xmlXPathNodeSetAddNs">xmlXPathNodeSetAddNs</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node, <br /> <a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> ns)</pre><pre class="programlisting">int <a href="#xmlXPathNodeSetAddUnique">xmlXPathNodeSetAddUnique</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting">int <a href="#xmlXPathNodeSetContains">xmlXPathNodeSetContains</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting">void <a href="#xmlXPathNodeSetDel">xmlXPathNodeSetDel</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre><pre class="programlisting">void <a href="#xmlXPathNodeSetFreeNs">xmlXPathNodeSetFreeNs</a> (<a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> ns)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeSetMerge">xmlXPathNodeSetMerge</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val2)</pre><pre class="programlisting">void <a href="#xmlXPathNodeSetRemove">xmlXPathNodeSetRemove</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> int val)</pre><pre class="programlisting">void <a href="#xmlXPathNodeSetSort">xmlXPathNodeSetSort</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> set)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeTrailing">xmlXPathNodeTrailing</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeTrailingSorted">xmlXPathNodeTrailingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre><pre class="programlisting">void <a href="#xmlXPathNormalizeFunction">xmlXPathNormalizeFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">int <a href="#xmlXPathNotEqualValues">xmlXPathNotEqualValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathNotFunction">xmlXPathNotFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathNsLookup">xmlXPathNsLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * prefix)</pre><pre class="programlisting">void <a href="#xmlXPathNumberFunction">xmlXPathNumberFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathParseNCName">xmlXPathParseNCName</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathParseName">xmlXPathParseName</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">int <a href="#xmlXPathPopBoolean">xmlXPathPopBoolean</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void * <a href="#xmlXPathPopExternal">xmlXPathPopExternal</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathPopNodeSet">xmlXPathPopNodeSet</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">double <a href="#xmlXPathPopNumber">xmlXPathPopNumber</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathPopString">xmlXPathPopString</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathPositionFunction">xmlXPathPositionFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathRegisterAllFunctions">xmlXPathRegisterAllFunctions</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre><pre class="programlisting">int <a href="#xmlXPathRegisterFunc">xmlXPathRegisterFunc</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> f)</pre><pre class="programlisting">void <a href="#xmlXPathRegisterFuncLookup">xmlXPathRegisterFuncLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathFuncLookupFunc">xmlXPathFuncLookupFunc</a> f, <br /> void * funcCtxt)</pre><pre class="programlisting">int <a href="#xmlXPathRegisterFuncNS">xmlXPathRegisterFuncNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri, <br /> <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> f)</pre><pre class="programlisting">int <a href="#xmlXPathRegisterNs">xmlXPathRegisterNs</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre><pre class="programlisting">int <a href="#xmlXPathRegisterVariable">xmlXPathRegisterVariable</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre><pre class="programlisting">void <a href="#xmlXPathRegisterVariableLookup">xmlXPathRegisterVariableLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathVariableLookupFunc">xmlXPathVariableLookupFunc</a> f, <br /> void * data)</pre><pre class="programlisting">int <a href="#xmlXPathRegisterVariableNS">xmlXPathRegisterVariableNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre><pre class="programlisting">void <a href="#xmlXPathRegisteredFuncsCleanup">xmlXPathRegisteredFuncsCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathRegisteredNsCleanup">xmlXPathRegisteredNsCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathRegisteredVariablesCleanup">xmlXPathRegisteredVariablesCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathRoot">xmlXPathRoot</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathRoundFunction">xmlXPathRoundFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathStartsWithFunction">xmlXPathStartsWithFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">double <a href="#xmlXPathStringEvalNumber">xmlXPathStringEvalNumber</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str)</pre><pre class="programlisting">void <a href="#xmlXPathStringFunction">xmlXPathStringFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathStringLengthFunction">xmlXPathStringLengthFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathSubValues">xmlXPathSubValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting">void <a href="#xmlXPathSubstringAfterFunction">xmlXPathSubstringAfterFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathSubstringBeforeFunction">xmlXPathSubstringBeforeFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathSubstringFunction">xmlXPathSubstringFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathSumFunction">xmlXPathSumFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathTrailing">xmlXPathTrailing</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathTrailingSorted">xmlXPathTrailingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre><pre class="programlisting">void <a href="#xmlXPathTranslateFunction">xmlXPathTranslateFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathTrueFunction">xmlXPathTrueFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre><pre class="programlisting">void <a href="#xmlXPathValueFlipSign">xmlXPathValueFlipSign</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathVariableLookup">xmlXPathVariableLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathVariableLookupNS">xmlXPathVariableLookupNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapCString">xmlXPathWrapCString</a> (char * val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapExternal">xmlXPathWrapExternal</a> (void * val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapNodeSet">xmlXPathWrapNodeSet</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val)</pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapString">xmlXPathWrapString</a> (<a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre><pre class="programlisting">void <a href="#xmlXPatherror">xmlXPatherror</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> const char * file, <br /> int line, <br /> int no)</pre><h2>Description</h2><h3><a name="CAST_TO_BOOLEAN" id="CAST_TO_BOOLEAN"></a>Macro: CAST_TO_BOOLEAN</h3><pre>#define CAST_TO_BOOLEAN</pre><p>Macro to try to cast the value on the top of the XPath stack to a boolean.</p><h3><a name="CAST_TO_NUMBER" id="CAST_TO_NUMBER"></a>Macro: CAST_TO_NUMBER</h3><pre>#define CAST_TO_NUMBER</pre><p>Macro to try to cast the value on the top of the XPath stack to a number.</p><h3><a name="CAST_TO_STRING" id="CAST_TO_STRING"></a>Macro: CAST_TO_STRING</h3><pre>#define CAST_TO_STRING</pre><p>Macro to try to cast the value on the top of the XPath stack to a string.</p><h3><a name="CHECK_ARITY" id="CHECK_ARITY"></a>Macro: CHECK_ARITY</h3><pre>#define CHECK_ARITY</pre><p>Macro to check that the number of args passed to an XPath function matches.</p><h3><a name="CHECK_ERROR" id="CHECK_ERROR"></a>Macro: CHECK_ERROR</h3><pre>#define CHECK_ERROR</pre><p>Macro to return from the function if an XPath error was detected.</p><h3><a name="CHECK_ERROR0" id="CHECK_ERROR0"></a>Macro: CHECK_ERROR0</h3><pre>#define CHECK_ERROR0</pre><p>Macro to return 0 from the function if an XPath error was detected.</p><h3><a name="CHECK_TYPE" id="CHECK_TYPE"></a>Macro: CHECK_TYPE</h3><pre>#define CHECK_TYPE</pre><p>Macro to check that the value on top of the XPath stack is of a given type.</p><h3><a name="CHECK_TYPE0" id="CHECK_TYPE0"></a>Macro: CHECK_TYPE0</h3><pre>#define CHECK_TYPE0</pre><p>Macro to check that the value on top of the XPath stack is of a given type. Return(0) in case of failure</p><h3><a name="XP_ERROR" id="XP_ERROR"></a>Macro: XP_ERROR</h3><pre>#define XP_ERROR</pre><p>Macro to raise an XPath error and return.</p><h3><a name="XP_ERROR0" id="XP_ERROR0"></a>Macro: XP_ERROR0</h3><pre>#define XP_ERROR0</pre><p>Macro to raise an XPath error and return 0.</p><h3><a name="xmlXPathCheckError" id="xmlXPathCheckError"></a>Macro: xmlXPathCheckError</h3><pre>#define xmlXPathCheckError</pre><p>Check if an XPath error was raised. Returns true if an error has been raised, false otherwise.</p><h3><a name="xmlXPathEmptyNodeSet" id="xmlXPathEmptyNodeSet"></a>Macro: xmlXPathEmptyNodeSet</h3><pre>#define xmlXPathEmptyNodeSet</pre><p>Empties a node-set.</p><h3><a name="xmlXPathGetContextNode" id="xmlXPathGetContextNode"></a>Macro: xmlXPathGetContextNode</h3><pre>#define xmlXPathGetContextNode</pre><p>Get the context node of an XPath context. Returns the context node.</p><h3><a name="xmlXPathGetDocument" id="xmlXPathGetDocument"></a>Macro: xmlXPathGetDocument</h3><pre>#define xmlXPathGetDocument</pre><p>Get the document of an XPath context. Returns the context document.</p><h3><a name="xmlXPathGetError" id="xmlXPathGetError"></a>Macro: xmlXPathGetError</h3><pre>#define xmlXPathGetError</pre><p>Get the error code of an XPath context. Returns the context error.</p><h3><a name="xmlXPathReturnBoolean" id="xmlXPathReturnBoolean"></a>Macro: xmlXPathReturnBoolean</h3><pre>#define xmlXPathReturnBoolean</pre><p>Pushes the boolean @val on the context stack.</p><h3><a name="xmlXPathReturnEmptyNodeSet" id="xmlXPathReturnEmptyNodeSet"></a>Macro: xmlXPathReturnEmptyNodeSet</h3><pre>#define xmlXPathReturnEmptyNodeSet</pre><p>Pushes an empty node-set on the context stack.</p><h3><a name="xmlXPathReturnEmptyString" id="xmlXPathReturnEmptyString"></a>Macro: xmlXPathReturnEmptyString</h3><pre>#define xmlXPathReturnEmptyString</pre><p>Pushes an empty string on the stack.</p><h3><a name="xmlXPathReturnExternal" id="xmlXPathReturnExternal"></a>Macro: xmlXPathReturnExternal</h3><pre>#define xmlXPathReturnExternal</pre><p>Pushes user data on the context stack.</p><h3><a name="xmlXPathReturnFalse" id="xmlXPathReturnFalse"></a>Macro: xmlXPathReturnFalse</h3><pre>#define xmlXPathReturnFalse</pre><p>Pushes false on the context stack.</p><h3><a name="xmlXPathReturnNodeSet" id="xmlXPathReturnNodeSet"></a>Macro: xmlXPathReturnNodeSet</h3><pre>#define xmlXPathReturnNodeSet</pre><p>Pushes the node-set @ns on the context stack.</p><h3><a name="xmlXPathReturnNumber" id="xmlXPathReturnNumber"></a>Macro: xmlXPathReturnNumber</h3><pre>#define xmlXPathReturnNumber</pre><p>Pushes the double @val on the context stack.</p><h3><a name="xmlXPathReturnString" id="xmlXPathReturnString"></a>Macro: xmlXPathReturnString</h3><pre>#define xmlXPathReturnString</pre><p>Pushes the string @str on the context stack.</p><h3><a name="xmlXPathReturnTrue" id="xmlXPathReturnTrue"></a>Macro: xmlXPathReturnTrue</h3><pre>#define xmlXPathReturnTrue</pre><p>Pushes true on the context stack.</p><h3><a name="xmlXPathSetArityError" id="xmlXPathSetArityError"></a>Macro: xmlXPathSetArityError</h3><pre>#define xmlXPathSetArityError</pre><p>Raises an <a href="libxml-xpath.html#XPATH_INVALID_ARITY">XPATH_INVALID_ARITY</a> error.</p><h3><a name="xmlXPathSetError" id="xmlXPathSetError"></a>Macro: xmlXPathSetError</h3><pre>#define xmlXPathSetError</pre><p>Raises an error.</p><h3><a name="xmlXPathSetTypeError" id="xmlXPathSetTypeError"></a>Macro: xmlXPathSetTypeError</h3><pre>#define xmlXPathSetTypeError</pre><p>Raises an <a href="libxml-xpath.html#XPATH_INVALID_TYPE">XPATH_INVALID_TYPE</a> error.</p><h3><a name="xmlXPathStackIsExternal" id="xmlXPathStackIsExternal"></a>Macro: xmlXPathStackIsExternal</h3><pre>#define xmlXPathStackIsExternal</pre><p>Checks if the current value on the XPath stack is an external object. Returns true if the current object on the stack is an external object.</p><h3><a name="xmlXPathStackIsNodeSet" id="xmlXPathStackIsNodeSet"></a>Macro: xmlXPathStackIsNodeSet</h3><pre>#define xmlXPathStackIsNodeSet</pre><p>Check if the current value on the XPath stack is a node set or an XSLT value tree. Returns true if the current object on the stack is a node-set.</p><h3><a name="valuePop" id="valuePop"></a>Function: valuePop</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> valuePop (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Pops the top XPath object from the value stack</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 evaluation context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the XPath object just removed</td></tr></tbody></table></div><h3><a name="valuePush" id="valuePush"></a>Function: valuePush</h3><pre class="programlisting">int valuePush (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)<br /></pre><p>Pushes a new XPath object on top of the value stack</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 evaluation context</td></tr><tr><td><span class="term"><i><tt>value</tt></i>:</span></td><td>the XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of items on the value stack</td></tr></tbody></table></div><h3><a name="xmlXPathAddValues" id="xmlXPathAddValues"></a>Function: xmlXPathAddValues</h3><pre class="programlisting">void xmlXPathAddValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Implement the add operation on XPath objects: The numeric operators convert their operands to numbers as if by calling the number 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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathBooleanFunction" id="xmlXPathBooleanFunction"></a>Function: xmlXPathBooleanFunction</h3><pre class="programlisting">void xmlXPathBooleanFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the boolean() XPath function boolean boolean(object) The boolean function converts its argument to a boolean as follows: - a number is true if and only if it is neither positive or negative zero nor NaN - a node-set is true if and only if it is non-empty - a string is true if and only if its length is non-zero</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCeilingFunction" id="xmlXPathCeilingFunction"></a>Function: xmlXPathCeilingFunction</h3><pre class="programlisting">void xmlXPathCeilingFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the ceiling() XPath function number ceiling(number) The ceiling function returns the smallest (closest to negative infinity) number that is not less than the argument and that is an integer.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCompareValues" id="xmlXPathCompareValues"></a>Function: xmlXPathCompareValues</h3><pre class="programlisting">int xmlXPathCompareValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int inf, <br /> int strict)<br /></pre><p>Implement the compare operation on XPath objects: @arg1 < @arg2 (1, 1, ... @arg1 <= @arg2 (1, 0, ... @arg1 > @arg2 (0, 1, ... @arg1 >= @arg2 (0, 0, ... When neither object to be compared is a node-set and the operator is <=, <, >=, >, then the objects are compared by converted both objects to numbers and comparing the numbers according to IEEE 754. The < comparison will be true if and only if the first number is less than the second number. The <= comparison will be true if and only if the first number is less than or equal to the second number. The > comparison will be true if and only if the first number is greater than the second number. The >= comparison will be true if and only if the first number is greater than or equal to the second number.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>inf</tt></i>:</span></td><td>less than (1) or greater than (0)</td></tr><tr><td><span class="term"><i><tt>strict</tt></i>:</span></td><td>is the comparison strict</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if the comparison succeeded, 0 if it failed</td></tr></tbody></table></div><h3><a name="xmlXPathConcatFunction" id="xmlXPathConcatFunction"></a>Function: xmlXPathConcatFunction</h3><pre class="programlisting">void xmlXPathConcatFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the concat() XPath function string concat(string, string, string*) The concat function returns the concatenation of its arguments.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathContainsFunction" id="xmlXPathContainsFunction"></a>Function: xmlXPathContainsFunction</h3><pre class="programlisting">void xmlXPathContainsFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the contains() XPath function boolean contains(string, string) The contains function returns true if the first argument string contains the second argument string, and otherwise returns false.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCountFunction" id="xmlXPathCountFunction"></a>Function: xmlXPathCountFunction</h3><pre class="programlisting">void xmlXPathCountFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the count() XPath function number count(node-set)</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathDebugDumpCompExpr" id="xmlXPathDebugDumpCompExpr"></a>Function: xmlXPathDebugDumpCompExpr</h3><pre class="programlisting">void xmlXPathDebugDumpCompExpr (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br /> int depth)<br /></pre><p>Dumps the tree of the compiled XPath expression.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>output</tt></i>:</span></td><td>the FILE * for the output</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the precompiled XPath expression</td></tr><tr><td><span class="term"><i><tt>depth</tt></i>:</span></td><td>the indentation level.</td></tr></tbody></table></div><h3><a name="xmlXPathDebugDumpObject" id="xmlXPathDebugDumpObject"></a>Function: xmlXPathDebugDumpObject</h3><pre class="programlisting">void xmlXPathDebugDumpObject (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur, <br /> int depth)<br /></pre><p>Dump the content of the object for debugging purposes</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>output</tt></i>:</span></td><td>the FILE * to dump the output</td></tr><tr><td><span class="term"><i><tt>cur</tt></i>:</span></td><td>the object to inspect</td></tr><tr><td><span class="term"><i><tt>depth</tt></i>:</span></td><td>indentation level</td></tr></tbody></table></div><h3><a name="xmlXPathDifference" id="xmlXPathDifference"></a>Function: xmlXPathDifference</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDifference (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /></pre><p>Implements the EXSLT - Sets difference() function: node-set set:difference (node-set, node-set)</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the difference between the two node sets, or nodes1 if nodes2 is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDistinct" id="xmlXPathDistinct"></a>Function: xmlXPathDistinct</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDistinct (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)<br /></pre><p>Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set) @nodes is sorted by document order, then #exslSetsDistinctSorted is called with the sorted node-set</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a subset of the nodes contained in @nodes, or @nodes if it is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDistinctSorted" id="xmlXPathDistinctSorted"></a>Function: xmlXPathDistinctSorted</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDistinctSorted (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)<br /></pre><p>Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set)</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes</tt></i>:</span></td><td>a node-set, sorted by document order</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a subset of the nodes contained in @nodes, or @nodes if it is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDivValues" id="xmlXPathDivValues"></a>Function: xmlXPathDivValues</h3><pre class="programlisting">void xmlXPathDivValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Implement the div operation on XPath objects @arg1 / @arg2: The numeric operators convert their operands to numbers as if by calling the number 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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathEqualValues" id="xmlXPathEqualValues"></a>Function: xmlXPathEqualValues</h3><pre class="programlisting">int xmlXPathEqualValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Implement the equal operation on XPath objects content: @arg1 == @arg2</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 Parser context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 or 1 depending on the results of the test.</td></tr></tbody></table></div><h3><a name="xmlXPathErr" id="xmlXPathErr"></a>Function: xmlXPathErr</h3><pre class="programlisting">void xmlXPathErr (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int error)<br /></pre><p>Handle an XPath error</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a XPath parser context</td></tr><tr><td><span class="term"><i><tt>error</tt></i>:</span></td><td>the error code</td></tr></tbody></table></div><h3><a name="xmlXPathEvalExpr" id="xmlXPathEvalExpr"></a>Function: xmlXPathEvalExpr</h3><pre class="programlisting">void xmlXPathEvalExpr (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Parse and evaluate an XPath expression in the given context, then push the result on the context stack</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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathEvaluatePredicateResult" id="xmlXPathEvaluatePredicateResult"></a>Function: xmlXPathEvaluatePredicateResult</h3><pre class="programlisting">int xmlXPathEvaluatePredicateResult (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-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 Parser 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><h3><a name="xmlXPathFalseFunction" id="xmlXPathFalseFunction"></a>Function: xmlXPathFalseFunction</h3><pre class="programlisting">void xmlXPathFalseFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the false() XPath function boolean false()</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathFloorFunction" id="xmlXPathFloorFunction"></a>Function: xmlXPathFloorFunction</h3><pre class="programlisting">void xmlXPathFloorFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the floor() XPath function number floor(number) The floor function returns the largest (closest to positive infinity) number that is not greater than the argument and that is an integer.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathFreeParserContext" id="xmlXPathFreeParserContext"></a>Function: xmlXPathFreeParserContext</h3><pre class="programlisting">void xmlXPathFreeParserContext (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /></pre><p>Free up an <a href="libxml-xpath.html#xmlXPathParserContext">xmlXPathParserContext</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><h3><a name="xmlXPathFunctionLookup" id="xmlXPathFunctionLookup"></a>Function: xmlXPathFunctionLookup</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> xmlXPathFunctionLookup (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)<br /></pre><p>Search in the Function array of the context for the given 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>name</tt></i>:</span></td><td>the function name</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> or NULL if not found</td></tr></tbody></table></div><h3><a name="xmlXPathFunctionLookupNS" id="xmlXPathFunctionLookupNS"></a>Function: xmlXPathFunctionLookupNS</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> xmlXPathFunctionLookupNS (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)<br /></pre><p>Search in the Function array of the context for the given 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>name</tt></i>:</span></td><td>the function name</td></tr><tr><td><span class="term"><i><tt>ns_uri</tt></i>:</span></td><td>the function namespace URI</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> or NULL if not found</td></tr></tbody></table></div><h3><a name="xmlXPathHasSameNodes" id="xmlXPathHasSameNodes"></a>Function: xmlXPathHasSameNodes</h3><pre class="programlisting">int xmlXPathHasSameNodes (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /></pre><p>Implements the EXSLT - Sets has-same-nodes function: boolean set:has-same-node(node-set, node-set)</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>true (1) if @nodes1 shares any node with @nodes2, false (0) otherwise</td></tr></tbody></table></div><h3><a name="xmlXPathIdFunction" id="xmlXPathIdFunction"></a>Function: xmlXPathIdFunction</h3><pre class="programlisting">void xmlXPathIdFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /></pre><p>Implement the id() XPath function node-set id(object) The id function selects elements by their unique ID (see [5.2.1 Unique IDs]). When the argument to id is of type node-set, then the result is the union of the result of applying id to the string value of each of the nodes in the argument node-set. When the argument to id is of any other type, the argument is converted to a string as if by a call to the string function; the string is split into a whitespace-separated list of tokens (whitespace is any sequence of <a href="libxml-SAX.html#characters">characters</a> matching the production S); the result is a node-set containing the elements in the same document as the context node that have a unique ID equal to any of the tokens in the list.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathIntersection" id="xmlXPathIntersection"></a>Function: xmlXPathIntersection</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathIntersection (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /></pre><p>Implements the EXSLT - Sets intersection() function: node-set set:intersection (node-set, node-set)</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a node set comprising the nodes that are within both the node sets passed as arguments</td></tr></tbody></table></div><h3><a name="xmlXPathIsNodeType" id="xmlXPathIsNodeType"></a>Function: xmlXPathIsNodeType</h3><pre class="programlisting">int xmlXPathIsNodeType (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)<br />Lines 1–214 of 394. 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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="SHORTCUT ICON" href="/favicon.ico" /><style type="text/css"> TD {font-family: Verdana,Arial,Helvetica} BODY {font-family: Verdana,Arial,Helvetica; margin-top: 2em; margin-left: 0em; margin-right: 0em} H1 {font-family: Verdana,Arial,Helvetica} H2 {font-family: Verdana,Arial,Helvetica} H3 {font-family: Verdana,Arial,Helvetica} A:link, A:visited, A:active { text-decoration: underline } </style><style type="text/css"> div.deprecated pre.programlisting {border-style: double;border-color:red} pre.programlisting {border-style: double;background: #EECFA1} </style><title>Module xpathInternals from libxml2</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" 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/></a></td><th align="center"><a href="../index.html">The XML C parser and toolkit of Gnome</a></th><th align="right"><a href="libxml-xpointer.html">xpointer</a></th><td><a accesskey="n" href="libxml-xpointer.html"><img src="right.png" width="24" height="24" border="0" alt="Next" /></a></td></tr></table><p>internal interfaces for XML Path Language implementation used to build new modules on top of XPath like XPointer and XSLT </p><h2>Table of Contents</h2><pre class="programlisting">#define <a href="#CAST_TO_BOOLEAN">CAST_TO_BOOLEAN</a></pre><pre class="programlisting">#define <a href="#CAST_TO_NUMBER">CAST_TO_NUMBER</a></pre><pre class="programlisting">#define <a href="#CAST_TO_STRING">CAST_TO_STRING</a></pre><pre class="programlisting">#define <a href="#CHECK_ARITY">CHECK_ARITY</a></pre><pre class="programlisting">#define <a href="#CHECK_ERROR">CHECK_ERROR</a></pre><pre class="programlisting">#define <a href="#CHECK_ERROR0">CHECK_ERROR0</a></pre><pre class="programlisting">#define <a href="#CHECK_TYPE">CHECK_TYPE</a></pre><pre class="programlisting">#define <a href="#CHECK_TYPE0">CHECK_TYPE0</a></pre><pre class="programlisting">#define <a href="#XP_ERROR">XP_ERROR</a></pre><pre class="programlisting">#define <a href="#XP_ERROR0">XP_ERROR0</a></pre><pre class="programlisting">#define <a href="#xmlXPathCheckError">xmlXPathCheckError</a></pre><pre class="programlisting">#define <a href="#xmlXPathEmptyNodeSet">xmlXPathEmptyNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetContextNode">xmlXPathGetContextNode</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetDocument">xmlXPathGetDocument</a></pre><pre class="programlisting">#define <a href="#xmlXPathGetError">xmlXPathGetError</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnBoolean">xmlXPathReturnBoolean</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnEmptyNodeSet">xmlXPathReturnEmptyNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnEmptyString">xmlXPathReturnEmptyString</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnExternal">xmlXPathReturnExternal</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnFalse">xmlXPathReturnFalse</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnNodeSet">xmlXPathReturnNodeSet</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnNumber">xmlXPathReturnNumber</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnString">xmlXPathReturnString</a></pre><pre class="programlisting">#define <a href="#xmlXPathReturnTrue">xmlXPathReturnTrue</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetArityError">xmlXPathSetArityError</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetError">xmlXPathSetError</a></pre><pre class="programlisting">#define <a href="#xmlXPathSetTypeError">xmlXPathSetTypeError</a></pre><pre class="programlisting">#define <a href="#xmlXPathStackIsExternal">xmlXPathStackIsExternal</a></pre><pre class="programlisting">#define <a href="#xmlXPathStackIsNodeSet">xmlXPathStackIsNodeSet</a></pre><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#valuePop">valuePop</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">int <a href="#valuePush">valuePush</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre> <pre class="programlisting">void <a href="#xmlXPathAddValues">xmlXPathAddValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathBooleanFunction">xmlXPathBooleanFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathCeilingFunction">xmlXPathCeilingFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">int <a href="#xmlXPathCompareValues">xmlXPathCompareValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int inf, <br /> int strict)</pre> <pre class="programlisting">void <a href="#xmlXPathConcatFunction">xmlXPathConcatFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathContainsFunction">xmlXPathContainsFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathCountFunction">xmlXPathCountFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathDebugDumpCompExpr">xmlXPathDebugDumpCompExpr</a> (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br /> int depth)</pre> <pre class="programlisting">void <a href="#xmlXPathDebugDumpObject">xmlXPathDebugDumpObject</a> (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur, <br /> int depth)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDifference">xmlXPathDifference</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDistinct">xmlXPathDistinct</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathDistinctSorted">xmlXPathDistinctSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)</pre> <pre class="programlisting">void <a href="#xmlXPathDivValues">xmlXPathDivValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">int <a href="#xmlXPathEqualValues">xmlXPathEqualValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathErr">xmlXPathErr</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int error)</pre> <pre class="programlisting">void <a href="#xmlXPathEvalExpr">xmlXPathEvalExpr</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">int <a href="#xmlXPathEvaluatePredicateResult">xmlXPathEvaluatePredicateResult</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> res)</pre> <pre class="programlisting">void <a href="#xmlXPathFalseFunction">xmlXPathFalseFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathFloorFunction">xmlXPathFloorFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathFreeParserContext">xmlXPathFreeParserContext</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> <a href="#xmlXPathFunctionLookup">xmlXPathFunctionLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> <a href="#xmlXPathFunctionLookupNS">xmlXPathFunctionLookupNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre> <pre class="programlisting">int <a href="#xmlXPathHasSameNodes">xmlXPathHasSameNodes</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting">void <a href="#xmlXPathIdFunction">xmlXPathIdFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathIntersection">xmlXPathIntersection</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting">int <a href="#xmlXPathIsNodeType">xmlXPathIsNodeType</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre> <pre class="programlisting">void <a href="#xmlXPathLangFunction">xmlXPathLangFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathLastFunction">xmlXPathLastFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathLeading">xmlXPathLeading</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathLeadingSorted">xmlXPathLeadingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting">void <a href="#xmlXPathLocalNameFunction">xmlXPathLocalNameFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathModValues">xmlXPathModValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathMultValues">xmlXPathMultValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathNamespaceURIFunction">xmlXPathNamespaceURIFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewBoolean">xmlXPathNewBoolean</a> (int val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewCString">xmlXPathNewCString</a> (const char * val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewFloat">xmlXPathNewFloat</a> (double val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewNodeSet">xmlXPathNewNodeSet</a> (<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewNodeSetList">xmlXPathNewNodeSetList</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> <a href="#xmlXPathNewParserContext">xmlXPathNewParserContext</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str, <br /> <a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewString">xmlXPathNewString</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathNewValueTree">xmlXPathNewValueTree</a> (<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAncestor">xmlXPathNextAncestor</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAncestorOrSelf">xmlXPathNextAncestorOrSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextAttribute">xmlXPathNextAttribute</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextChild">xmlXPathNextChild</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextDescendant">xmlXPathNextDescendant</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextDescendantOrSelf">xmlXPathNextDescendantOrSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextFollowing">xmlXPathNextFollowing</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextFollowingSibling">xmlXPathNextFollowingSibling</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextNamespace">xmlXPathNextNamespace</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextParent">xmlXPathNextParent</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextPreceding">xmlXPathNextPreceding</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextPrecedingSibling">xmlXPathNextPrecedingSibling</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> <a href="#xmlXPathNextSelf">xmlXPathNextSelf</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> cur)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeLeading">xmlXPathNodeLeading</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeLeadingSorted">xmlXPathNodeLeadingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre> <pre class="programlisting">int <a href="#xmlXPathNodeSetAdd">xmlXPathNodeSetAdd</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting">int <a href="#xmlXPathNodeSetAddNs">xmlXPathNodeSetAddNs</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node, <br /> <a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> ns)</pre> <pre class="programlisting">int <a href="#xmlXPathNodeSetAddUnique">xmlXPathNodeSetAddUnique</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting">int <a href="#xmlXPathNodeSetContains">xmlXPathNodeSetContains</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting">void <a href="#xmlXPathNodeSetDel">xmlXPathNodeSetDel</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre> <pre class="programlisting">void <a href="#xmlXPathNodeSetFreeNs">xmlXPathNodeSetFreeNs</a> (<a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> ns)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeSetMerge">xmlXPathNodeSetMerge</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val2)</pre> <pre class="programlisting">void <a href="#xmlXPathNodeSetRemove">xmlXPathNodeSetRemove</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> cur, <br /> int val)</pre> <pre class="programlisting">void <a href="#xmlXPathNodeSetSort">xmlXPathNodeSetSort</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> set)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeTrailing">xmlXPathNodeTrailing</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathNodeTrailingSorted">xmlXPathNodeTrailingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes, <br /> <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> node)</pre> <pre class="programlisting">void <a href="#xmlXPathNormalizeFunction">xmlXPathNormalizeFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">int <a href="#xmlXPathNotEqualValues">xmlXPathNotEqualValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathNotFunction">xmlXPathNotFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathNsLookup">xmlXPathNsLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * prefix)</pre> <pre class="programlisting">void <a href="#xmlXPathNumberFunction">xmlXPathNumberFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathParseNCName">xmlXPathParseNCName</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathParseName">xmlXPathParseName</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">int <a href="#xmlXPathPopBoolean">xmlXPathPopBoolean</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void * <a href="#xmlXPathPopExternal">xmlXPathPopExternal</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathPopNodeSet">xmlXPathPopNodeSet</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">double <a href="#xmlXPathPopNumber">xmlXPathPopNumber</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * <a href="#xmlXPathPopString">xmlXPathPopString</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathPositionFunction">xmlXPathPositionFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisterAllFunctions">xmlXPathRegisterAllFunctions</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre> <pre class="programlisting">int <a href="#xmlXPathRegisterFunc">xmlXPathRegisterFunc</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> f)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisterFuncLookup">xmlXPathRegisterFuncLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathFuncLookupFunc">xmlXPathFuncLookupFunc</a> f, <br /> void * funcCtxt)</pre> <pre class="programlisting">int <a href="#xmlXPathRegisterFuncNS">xmlXPathRegisterFuncNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri, <br /> <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> f)</pre> <pre class="programlisting">int <a href="#xmlXPathRegisterNs">xmlXPathRegisterNs</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre> <pre class="programlisting">int <a href="#xmlXPathRegisterVariable">xmlXPathRegisterVariable</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisterVariableLookup">xmlXPathRegisterVariableLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathVariableLookupFunc">xmlXPathVariableLookupFunc</a> f, <br /> void * data)</pre> <pre class="programlisting">int <a href="#xmlXPathRegisterVariableNS">xmlXPathRegisterVariableNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisteredFuncsCleanup">xmlXPathRegisteredFuncsCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisteredNsCleanup">xmlXPathRegisteredNsCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathRegisteredVariablesCleanup">xmlXPathRegisteredVariablesCleanup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathRoot">xmlXPathRoot</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathRoundFunction">xmlXPathRoundFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathStartsWithFunction">xmlXPathStartsWithFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">double <a href="#xmlXPathStringEvalNumber">xmlXPathStringEvalNumber</a> (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * str)</pre> <pre class="programlisting">void <a href="#xmlXPathStringFunction">xmlXPathStringFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathStringLengthFunction">xmlXPathStringLengthFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathSubValues">xmlXPathSubValues</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting">void <a href="#xmlXPathSubstringAfterFunction">xmlXPathSubstringAfterFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathSubstringBeforeFunction">xmlXPathSubstringBeforeFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathSubstringFunction">xmlXPathSubstringFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathSumFunction">xmlXPathSumFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathTrailing">xmlXPathTrailing</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> <a href="#xmlXPathTrailingSorted">xmlXPathTrailingSorted</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)</pre> <pre class="programlisting">void <a href="#xmlXPathTranslateFunction">xmlXPathTranslateFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathTrueFunction">xmlXPathTrueFunction</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)</pre> <pre class="programlisting">void <a href="#xmlXPathValueFlipSign">xmlXPathValueFlipSign</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathVariableLookup">xmlXPathVariableLookup</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathVariableLookupNS">xmlXPathVariableLookupNS</a> (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapCString">xmlXPathWrapCString</a> (char * val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapExternal">xmlXPathWrapExternal</a> (void * val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapNodeSet">xmlXPathWrapNodeSet</a> (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> val)</pre> <pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> <a href="#xmlXPathWrapString">xmlXPathWrapString</a> (<a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * val)</pre> <pre class="programlisting">void <a href="#xmlXPatherror">xmlXPatherror</a> (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> const char * file, <br /> int line, <br /> int no)</pre> <h2>Description</h2> <h3><a name="CAST_TO_BOOLEAN" id="CAST_TO_BOOLEAN"></a>Macro: CAST_TO_BOOLEAN</h3><pre>#define CAST_TO_BOOLEAN</pre><p>Macro to try to cast the value on the top of the XPath stack to a boolean.</p> <h3><a name="CAST_TO_NUMBER" id="CAST_TO_NUMBER"></a>Macro: CAST_TO_NUMBER</h3><pre>#define CAST_TO_NUMBER</pre><p>Macro to try to cast the value on the top of the XPath stack to a number.</p> <h3><a name="CAST_TO_STRING" id="CAST_TO_STRING"></a>Macro: CAST_TO_STRING</h3><pre>#define CAST_TO_STRING</pre><p>Macro to try to cast the value on the top of the XPath stack to a string.</p> <h3><a name="CHECK_ARITY" id="CHECK_ARITY"></a>Macro: CHECK_ARITY</h3><pre>#define CHECK_ARITY</pre><p>Macro to check that the number of args passed to an XPath function matches.</p> <h3><a name="CHECK_ERROR" id="CHECK_ERROR"></a>Macro: CHECK_ERROR</h3><pre>#define CHECK_ERROR</pre><p>Macro to return from the function if an XPath error was detected.</p> <h3><a name="CHECK_ERROR0" id="CHECK_ERROR0"></a>Macro: CHECK_ERROR0</h3><pre>#define CHECK_ERROR0</pre><p>Macro to return 0 from the function if an XPath error was detected.</p> <h3><a name="CHECK_TYPE" id="CHECK_TYPE"></a>Macro: CHECK_TYPE</h3><pre>#define CHECK_TYPE</pre><p>Macro to check that the value on top of the XPath stack is of a given type.</p> <h3><a name="CHECK_TYPE0" id="CHECK_TYPE0"></a>Macro: CHECK_TYPE0</h3><pre>#define CHECK_TYPE0</pre><p>Macro to check that the value on top of the XPath stack is of a given type. Return(0) in case of failure</p> <h3><a name="XP_ERROR" id="XP_ERROR"></a>Macro: XP_ERROR</h3><pre>#define XP_ERROR</pre><p>Macro to raise an XPath error and return.</p> <h3><a name="XP_ERROR0" id="XP_ERROR0"></a>Macro: XP_ERROR0</h3><pre>#define XP_ERROR0</pre><p>Macro to raise an XPath error and return 0.</p> <h3><a name="xmlXPathCheckError" id="xmlXPathCheckError"></a>Macro: xmlXPathCheckError</h3><pre>#define xmlXPathCheckError</pre><p>Check if an XPath error was raised. Returns true if an error has been raised, false otherwise.</p> <h3><a name="xmlXPathEmptyNodeSet" id="xmlXPathEmptyNodeSet"></a>Macro: xmlXPathEmptyNodeSet</h3><pre>#define xmlXPathEmptyNodeSet</pre><p>Empties a node-set.</p> <h3><a name="xmlXPathGetContextNode" id="xmlXPathGetContextNode"></a>Macro: xmlXPathGetContextNode</h3><pre>#define xmlXPathGetContextNode</pre><p>Get the context node of an XPath context. Returns the context node.</p> <h3><a name="xmlXPathGetDocument" id="xmlXPathGetDocument"></a>Macro: xmlXPathGetDocument</h3><pre>#define xmlXPathGetDocument</pre><p>Get the document of an XPath context. Returns the context document.</p> <h3><a name="xmlXPathGetError" id="xmlXPathGetError"></a>Macro: xmlXPathGetError</h3><pre>#define xmlXPathGetError</pre><p>Get the error code of an XPath context. Returns the context error.</p> <h3><a name="xmlXPathReturnBoolean" id="xmlXPathReturnBoolean"></a>Macro: xmlXPathReturnBoolean</h3><pre>#define xmlXPathReturnBoolean</pre><p>Pushes the boolean @val on the context stack.</p> <h3><a name="xmlXPathReturnEmptyNodeSet" id="xmlXPathReturnEmptyNodeSet"></a>Macro: xmlXPathReturnEmptyNodeSet</h3><pre>#define xmlXPathReturnEmptyNodeSet</pre><p>Pushes an empty node-set on the context stack.</p> <h3><a name="xmlXPathReturnEmptyString" id="xmlXPathReturnEmptyString"></a>Macro: xmlXPathReturnEmptyString</h3><pre>#define xmlXPathReturnEmptyString</pre><p>Pushes an empty string on the stack.</p> <h3><a name="xmlXPathReturnExternal" id="xmlXPathReturnExternal"></a>Macro: xmlXPathReturnExternal</h3><pre>#define xmlXPathReturnExternal</pre><p>Pushes user data on the context stack.</p> <h3><a name="xmlXPathReturnFalse" id="xmlXPathReturnFalse"></a>Macro: xmlXPathReturnFalse</h3><pre>#define xmlXPathReturnFalse</pre><p>Pushes false on the context stack.</p> <h3><a name="xmlXPathReturnNodeSet" id="xmlXPathReturnNodeSet"></a>Macro: xmlXPathReturnNodeSet</h3><pre>#define xmlXPathReturnNodeSet</pre><p>Pushes the node-set @ns on the context stack.</p> <h3><a name="xmlXPathReturnNumber" id="xmlXPathReturnNumber"></a>Macro: xmlXPathReturnNumber</h3><pre>#define xmlXPathReturnNumber</pre><p>Pushes the double @val on the context stack.</p> <h3><a name="xmlXPathReturnString" id="xmlXPathReturnString"></a>Macro: xmlXPathReturnString</h3><pre>#define xmlXPathReturnString</pre><p>Pushes the string @str on the context stack.</p> <h3><a name="xmlXPathReturnTrue" id="xmlXPathReturnTrue"></a>Macro: xmlXPathReturnTrue</h3><pre>#define xmlXPathReturnTrue</pre><p>Pushes true on the context stack.</p> <h3><a name="xmlXPathSetArityError" id="xmlXPathSetArityError"></a>Macro: xmlXPathSetArityError</h3><pre>#define xmlXPathSetArityError</pre><p>Raises an <a href="libxml-xpath.html#XPATH_INVALID_ARITY">XPATH_INVALID_ARITY</a> error.</p> <h3><a name="xmlXPathSetError" id="xmlXPathSetError"></a>Macro: xmlXPathSetError</h3><pre>#define xmlXPathSetError</pre><p>Raises an error.</p> <h3><a name="xmlXPathSetTypeError" id="xmlXPathSetTypeError"></a>Macro: xmlXPathSetTypeError</h3><pre>#define xmlXPathSetTypeError</pre><p>Raises an <a href="libxml-xpath.html#XPATH_INVALID_TYPE">XPATH_INVALID_TYPE</a> error.</p> <h3><a name="xmlXPathStackIsExternal" id="xmlXPathStackIsExternal"></a>Macro: xmlXPathStackIsExternal</h3><pre>#define xmlXPathStackIsExternal</pre><p>Checks if the current value on the XPath stack is an external object. Returns true if the current object on the stack is an external object.</p> <h3><a name="xmlXPathStackIsNodeSet" id="xmlXPathStackIsNodeSet"></a>Macro: xmlXPathStackIsNodeSet</h3><pre>#define xmlXPathStackIsNodeSet</pre><p>Check if the current value on the XPath stack is a node set or an XSLT value tree. Returns true if the current object on the stack is a node-set.</p> <h3><a name="valuePop" id="valuePop"></a>Function: valuePop</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> valuePop (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Pops the top XPath object from the value stack</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 evaluation context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the XPath object just removed</td></tr></tbody></table></div><h3><a name="valuePush" id="valuePush"></a>Function: valuePush</h3><pre class="programlisting">int valuePush (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> value)<br /> </pre><p>Pushes a new XPath object on top of the value stack</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 evaluation context</td></tr><tr><td><span class="term"><i><tt>value</tt></i>:</span></td><td>the XPath object</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of items on the value stack</td></tr></tbody></table></div><h3><a name="xmlXPathAddValues" id="xmlXPathAddValues"></a>Function: xmlXPathAddValues</h3><pre class="programlisting">void xmlXPathAddValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Implement the add operation on XPath objects: The numeric operators convert their operands to numbers as if by calling the number 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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathBooleanFunction" id="xmlXPathBooleanFunction"></a>Function: xmlXPathBooleanFunction</h3><pre class="programlisting">void xmlXPathBooleanFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the boolean() XPath function boolean boolean(object) The boolean function converts its argument to a boolean as follows: - a number is true if and only if it is neither positive or negative zero nor NaN - a node-set is true if and only if it is non-empty - a string is true if and only if its length is non-zero</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCeilingFunction" id="xmlXPathCeilingFunction"></a>Function: xmlXPathCeilingFunction</h3><pre class="programlisting">void xmlXPathCeilingFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the ceiling() XPath function number ceiling(number) The ceiling function returns the smallest (closest to negative infinity) number that is not less than the argument and that is an integer.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCompareValues" id="xmlXPathCompareValues"></a>Function: xmlXPathCompareValues</h3><pre class="programlisting">int xmlXPathCompareValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int inf, <br /> int strict)<br /> </pre><p>Implement the compare operation on XPath objects: @arg1 < @arg2 (1, 1, ... @arg1 <= @arg2 (1, 0, ... @arg1 > @arg2 (0, 1, ... @arg1 >= @arg2 (0, 0, ... When neither object to be compared is a node-set and the operator is <=, <, >=, >, then the objects are compared by converted both objects to numbers and comparing the numbers according to IEEE 754. The < comparison will be true if and only if the first number is less than the second number. The <= comparison will be true if and only if the first number is less than or equal to the second number. The > comparison will be true if and only if the first number is greater than the second number. The >= comparison will be true if and only if the first number is greater than or equal to the second number.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>inf</tt></i>:</span></td><td>less than (1) or greater than (0)</td></tr><tr><td><span class="term"><i><tt>strict</tt></i>:</span></td><td>is the comparison strict</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>1 if the comparison succeeded, 0 if it failed</td></tr></tbody></table></div><h3><a name="xmlXPathConcatFunction" id="xmlXPathConcatFunction"></a>Function: xmlXPathConcatFunction</h3><pre class="programlisting">void xmlXPathConcatFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the concat() XPath function string concat(string, string, string*) The concat function returns the concatenation of its arguments.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathContainsFunction" id="xmlXPathContainsFunction"></a>Function: xmlXPathContainsFunction</h3><pre class="programlisting">void xmlXPathContainsFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the contains() XPath function boolean contains(string, string) The contains function returns true if the first argument string contains the second argument string, and otherwise returns false.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathCountFunction" id="xmlXPathCountFunction"></a>Function: xmlXPathCountFunction</h3><pre class="programlisting">void xmlXPathCountFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the count() XPath function number count(node-set)</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathDebugDumpCompExpr" id="xmlXPathDebugDumpCompExpr"></a>Function: xmlXPathDebugDumpCompExpr</h3><pre class="programlisting">void xmlXPathDebugDumpCompExpr (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathCompExprPtr">xmlXPathCompExprPtr</a> comp, <br /> int depth)<br /> </pre><p>Dumps the tree of the compiled XPath expression.</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>output</tt></i>:</span></td><td>the FILE * for the output</td></tr><tr><td><span class="term"><i><tt>comp</tt></i>:</span></td><td>the precompiled XPath expression</td></tr><tr><td><span class="term"><i><tt>depth</tt></i>:</span></td><td>the indentation level.</td></tr></tbody></table></div><h3><a name="xmlXPathDebugDumpObject" id="xmlXPathDebugDumpObject"></a>Function: xmlXPathDebugDumpObject</h3><pre class="programlisting">void xmlXPathDebugDumpObject (FILE * output, <br /> <a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> cur, <br /> int depth)<br /> </pre><p>Dump the content of the object for debugging purposes</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>output</tt></i>:</span></td><td>the FILE * to dump the output</td></tr><tr><td><span class="term"><i><tt>cur</tt></i>:</span></td><td>the object to inspect</td></tr><tr><td><span class="term"><i><tt>depth</tt></i>:</span></td><td>indentation level</td></tr></tbody></table></div><h3><a name="xmlXPathDifference" id="xmlXPathDifference"></a>Function: xmlXPathDifference</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDifference (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /> </pre><p>Implements the EXSLT - Sets difference() function: node-set set:difference (node-set, node-set)</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the difference between the two node sets, or nodes1 if nodes2 is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDistinct" id="xmlXPathDistinct"></a>Function: xmlXPathDistinct</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDistinct (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)<br /> </pre><p>Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set) @nodes is sorted by document order, then #exslSetsDistinctSorted is called with the sorted node-set</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a subset of the nodes contained in @nodes, or @nodes if it is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDistinctSorted" id="xmlXPathDistinctSorted"></a>Function: xmlXPathDistinctSorted</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathDistinctSorted (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes)<br /> </pre><p>Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set)</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes</tt></i>:</span></td><td>a node-set, sorted by document order</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a subset of the nodes contained in @nodes, or @nodes if it is empty</td></tr></tbody></table></div><h3><a name="xmlXPathDivValues" id="xmlXPathDivValues"></a>Function: xmlXPathDivValues</h3><pre class="programlisting">void xmlXPathDivValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Implement the div operation on XPath objects @arg1 / @arg2: The numeric operators convert their operands to numbers as if by calling the number 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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathEqualValues" id="xmlXPathEqualValues"></a>Function: xmlXPathEqualValues</h3><pre class="programlisting">int xmlXPathEqualValues (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Implement the equal operation on XPath objects content: @arg1 == @arg2</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 Parser context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 or 1 depending on the results of the test.</td></tr></tbody></table></div><h3><a name="xmlXPathErr" id="xmlXPathErr"></a>Function: xmlXPathErr</h3><pre class="programlisting">void xmlXPathErr (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int error)<br /> </pre><p>Handle an XPath error</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a XPath parser context</td></tr><tr><td><span class="term"><i><tt>error</tt></i>:</span></td><td>the error code</td></tr></tbody></table></div><h3><a name="xmlXPathEvalExpr" id="xmlXPathEvalExpr"></a>Function: xmlXPathEvalExpr</h3><pre class="programlisting">void xmlXPathEvalExpr (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Parse and evaluate an XPath expression in the given context, then push the result on the context stack</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 Parser context</td></tr></tbody></table></div><h3><a name="xmlXPathEvaluatePredicateResult" id="xmlXPathEvaluatePredicateResult"></a>Function: xmlXPathEvaluatePredicateResult</h3><pre class="programlisting">int xmlXPathEvaluatePredicateResult (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> <a href="libxml-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 Parser 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><h3><a name="xmlXPathFalseFunction" id="xmlXPathFalseFunction"></a>Function: xmlXPathFalseFunction</h3><pre class="programlisting">void xmlXPathFalseFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the false() XPath function boolean false()</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathFloorFunction" id="xmlXPathFloorFunction"></a>Function: xmlXPathFloorFunction</h3><pre class="programlisting">void xmlXPathFloorFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the floor() XPath function number floor(number) The floor function returns the largest (closest to positive infinity) number that is not greater than the argument and that is an integer.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathFreeParserContext" id="xmlXPathFreeParserContext"></a>Function: xmlXPathFreeParserContext</h3><pre class="programlisting">void xmlXPathFreeParserContext (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt)<br /> </pre><p>Free up an <a href="libxml-xpath.html#xmlXPathParserContext">xmlXPathParserContext</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><h3><a name="xmlXPathFunctionLookup" id="xmlXPathFunctionLookup"></a>Function: xmlXPathFunctionLookup</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> xmlXPathFunctionLookup (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)<br /> </pre><p>Search in the Function array of the context for the given 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>name</tt></i>:</span></td><td>the function name</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> or NULL if not found</td></tr></tbody></table></div><h3><a name="xmlXPathFunctionLookupNS" id="xmlXPathFunctionLookupNS"></a>Function: xmlXPathFunctionLookupNS</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> xmlXPathFunctionLookupNS (<a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a> ctxt, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br /> const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)<br /> </pre><p>Search in the Function array of the context for the given 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>name</tt></i>:</span></td><td>the function name</td></tr><tr><td><span class="term"><i><tt>ns_uri</tt></i>:</span></td><td>the function namespace URI</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the <a href="libxml-xpath.html#xmlXPathFunction">xmlXPathFunction</a> or NULL if not found</td></tr></tbody></table></div><h3><a name="xmlXPathHasSameNodes" id="xmlXPathHasSameNodes"></a>Function: xmlXPathHasSameNodes</h3><pre class="programlisting">int xmlXPathHasSameNodes (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /> </pre><p>Implements the EXSLT - Sets has-same-nodes function: boolean set:has-same-node(node-set, node-set)</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>true (1) if @nodes1 shares any node with @nodes2, false (0) otherwise</td></tr></tbody></table></div><h3><a name="xmlXPathIdFunction" id="xmlXPathIdFunction"></a>Function: xmlXPathIdFunction</h3><pre class="programlisting">void xmlXPathIdFunction (<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br /> int nargs)<br /> </pre><p>Implement the id() XPath function node-set id(object) The id function selects elements by their unique ID (see [5.2.1 Unique IDs]). When the argument to id is of type node-set, then the result is the union of the result of applying id to the string value of each of the nodes in the argument node-set. When the argument to id is of any other type, the argument is converted to a string as if by a call to the string function; the string is split into a whitespace-separated list of tokens (whitespace is any sequence of <a href="libxml-SAX.html#characters">characters</a> matching the production S); the result is a node-set containing the elements in the same document as the context node that have a unique ID equal to any of the tokens in the list.</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 Parser context</td></tr><tr><td><span class="term"><i><tt>nargs</tt></i>:</span></td><td>the number of arguments</td></tr></tbody></table></div><h3><a name="xmlXPathIntersection" id="xmlXPathIntersection"></a>Function: xmlXPathIntersection</h3><pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> xmlXPathIntersection (<a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes1, <br /> <a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a> nodes2)<br /> </pre><p>Implements the EXSLT - Sets intersection() function: node-set set:intersection (node-set, node-set)</p> <div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>nodes1</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>nodes2</tt></i>:</span></td><td>a node-set</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a node set comprising the nodes that are within both the node sets passed as arguments</td></tr></tbody></table></div><h3><a name="xmlXPathIsNodeType" id="xmlXPathIsNodeType"></a>Function: xmlXPathIsNodeType</h3><pre class="programlisting">int xmlXPathIsNodeType (const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name)<br />