<HTML
><HEAD
><TITLE
>xpath</TITLE
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><H1
><A
NAME="LIBXML-XPATH"
>xpath</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN12050"
></A
><H2
>Name</H2
>xpath&nbsp;--&nbsp;</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN12053"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
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WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
>&#13;

struct      <A
HREF="libxml-xpath.html#XMLXPATHCONTEXT"
>xmlXPathContext</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
>;
struct      <A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXT"
>xmlXPathParserContext</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
>;
enum        <A
HREF="libxml-xpath.html#XMLXPATHERROR"
>xmlXPathError</A
>;
struct      <A
HREF="libxml-xpath.html#XMLNODESET"
>xmlNodeSet</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
>;
enum        <A
HREF="libxml-xpath.html#XMLXPATHOBJECTTYPE"
>xmlXPathObjectType</A
>;
struct      <A
HREF="libxml-xpath.html#XMLXPATHOBJECT"
>xmlXPathObject</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
>;
int         (<A
HREF="libxml-xpath.html#XMLXPATHCONVERTFUNC"
>*xmlXPathConvertFunc</A
>)          (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj,
                                             int type);
struct      <A
HREF="libxml-xpath.html#XMLXPATHTYPE"
>xmlXPathType</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHTYPEPTR"
>xmlXPathTypePtr</A
>;
struct      <A
HREF="libxml-xpath.html#XMLXPATHVARIABLE"
>xmlXPathVariable</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHVARIABLEPTR"
>xmlXPathVariablePtr</A
>;
void        (<A
HREF="libxml-xpath.html#XMLXPATHEVALFUNC"
>*xmlXPathEvalFunc</A
>)             (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             int nargs);
struct      <A
HREF="libxml-xpath.html#XMLXPATHFUNCT"
>xmlXPathFunct</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHFUNCPTR"
>xmlXPathFuncPtr</A
>;
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> (<A
HREF="libxml-xpath.html#XMLXPATHAXISFUNC"
>*xmlXPathAxisFunc</A
>)       (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             <A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> cur);
struct      <A
HREF="libxml-xpath.html#XMLXPATHAXIS"
>xmlXPathAxis</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHAXISPTR"
>xmlXPathAxisPtr</A
>;
struct      <A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPR"
>xmlXPathCompExpr</A
>;
typedef     <A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
>;
void        (<A
HREF="libxml-xpath.html#XMLXPATHFUNCTION"
>*xmlXPathFunction</A
>)             (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             int nargs);
int         <A
HREF="libxml-xpath.html#XMLXPATHISNAN"
>xmlXPathIsNaN</A
>                   (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);
int         <A
HREF="libxml-xpath.html#XMLXPATHISINF"
>xmlXPathIsInf</A
>                   (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);
#define     <A
HREF="libxml-xpath.html#XMLXPATHNODESETGETLENGTH"
>xmlXPathNodeSetGetLength</A
>        (ns)
#define     <A
HREF="libxml-xpath.html#XMLXPATHNODESETITEM"
>xmlXPathNodeSetItem</A
>             (ns, index)
#define     <A
HREF="libxml-xpath.html#XMLXPATHNODESETISEMPTY"
>xmlXPathNodeSetIsEmpty</A
>          (ns)
void        <A
HREF="libxml-xpath.html#XMLXPATHFREEOBJECT"
>xmlXPathFreeObject</A
>              (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj);
<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHNODESETCREATE"
>xmlXPathNodeSetCreate</A
>         (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> val);
void        <A
HREF="libxml-xpath.html#XMLXPATHFREENODESETLIST"
>xmlXPathFreeNodeSetList</A
>         (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj);
void        <A
HREF="libxml-xpath.html#XMLXPATHFREENODESET"
>xmlXPathFreeNodeSet</A
>             (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> obj);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHOBJECTCOPY"
>xmlXPathObjectCopy</A
>        (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
int         <A
HREF="libxml-xpath.html#XMLXPATHCMPNODES"
>xmlXPathCmpNodes</A
>                (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node1,
                                             <A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node2);
int         <A
HREF="libxml-xpath.html#XMLXPATHCASTNUMBERTOBOOLEAN"
>xmlXPathCastNumberToBoolean</A
>     (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);
int         <A
HREF="libxml-xpath.html#XMLXPATHCASTSTRINGTOBOOLEAN"
>xmlXPathCastStringToBoolean</A
>     (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *val);
int         <A
HREF="libxml-xpath.html#XMLXPATHCASTNODESETTOBOOLEAN"
>xmlXPathCastNodeSetToBoolean</A
>    (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);
int         <A
HREF="libxml-xpath.html#XMLXPATHCASTTOBOOLEAN"
>xmlXPathCastToBoolean</A
>           (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      <A
HREF="libxml-xpath.html#XMLXPATHCASTBOOLEANTONUMBER"
>xmlXPathCastBooleanToNumber</A
>     (int val);
<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      <A
HREF="libxml-xpath.html#XMLXPATHCASTSTRINGTONUMBER"
>xmlXPathCastStringToNumber</A
>      (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *val);
<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      <A
HREF="libxml-xpath.html#XMLXPATHCASTNODETONUMBER"
>xmlXPathCastNodeToNumber</A
>        (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node);
<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      <A
HREF="libxml-xpath.html#XMLXPATHCASTNODESETTONUMBER"
>xmlXPathCastNodeSetToNumber</A
>     (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);
<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      <A
HREF="libxml-xpath.html#XMLXPATHCASTTONUMBER"
>xmlXPathCastToNumber</A
>            (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
<A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    <A
HREF="libxml-xpath.html#XMLXPATHCASTBOOLEANTOSTRING"
>xmlXPathCastBooleanToString</A
>     (int val);
<A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    <A
HREF="libxml-xpath.html#XMLXPATHCASTNUMBERTOSTRING"
>xmlXPathCastNumberToString</A
>      (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);
<A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    <A
HREF="libxml-xpath.html#XMLXPATHCASTNODETOSTRING"
>xmlXPathCastNodeToString</A
>        (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node);
<A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    <A
HREF="libxml-xpath.html#XMLXPATHCASTNODESETTOSTRING"
>xmlXPathCastNodeSetToString</A
>     (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);
<A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    <A
HREF="libxml-xpath.html#XMLXPATHCASTTOSTRING"
>xmlXPathCastToString</A
>            (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHCONVERTBOOLEAN"
>xmlXPathConvertBoolean</A
>    (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHCONVERTNUMBER"
>xmlXPathConvertNumber</A
>     (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHCONVERTSTRING"
>xmlXPathConvertString</A
>     (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);
void        <A
HREF="libxml-xpath.html#XMLXPATHINIT"
>xmlXPathInit</A
>                    (void);
<A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHNEWCONTEXT"
>xmlXPathNewContext</A
>       (<A
HREF="libxml-tree.html#XMLDOCPTR"
>xmlDocPtr</A
> doc);
void        <A
HREF="libxml-xpath.html#XMLXPATHFREECONTEXT"
>xmlXPathFreeContext</A
>             (<A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHEVAL"
>xmlXPathEval</A
>              (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctx);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHEVALEXPRESSION"
>xmlXPathEvalExpression</A
>    (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt);
int         <A
HREF="libxml-xpath.html#XMLXPATHEVALPREDICATE"
>xmlXPathEvalPredicate</A
>           (<A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt,
                                             <A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> res);
<A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHCOMPILE"
>xmlXPathCompile</A
>         (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str);
<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> <A
HREF="libxml-xpath.html#XMLXPATHCOMPILEDEVAL"
>xmlXPathCompiledEval</A
>      (<A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> comp,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctx);
void        <A
HREF="libxml-xpath.html#XMLXPATHFREECOMPEXPR"
>xmlXPathFreeCompExpr</A
>            (<A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> comp);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN12179"
></A
><H2
>Description</H2
><P
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN12182"
></A
><H2
>Details</H2
><DIV
CLASS="REFSECT2"
><A
NAME="AEN12184"
></A
><H3
><A
NAME="XMLXPATHCONTEXT"
></A
>struct xmlXPathContext</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathContext {
    xmlDocPtr doc;			/* The current document */
    xmlNodePtr node;			/* The current node */

    int nb_variables_unused;		/* unused (hash table) */
    int max_variables_unused;		/* unused (hash table) */
    xmlHashTablePtr varHash;		/* Hash table of defined variables */

    int nb_types;			/* number of defined types */
    int max_types;			/* max number of types */
    xmlXPathTypePtr types;		/* Array of defined types */

    int nb_funcs_unused;		/* unused (hash table) */
    int max_funcs_unused;		/* unused (hash table) */
    xmlHashTablePtr funcHash;		/* Hash table of defined funcs */

    int nb_axis;			/* number of defined axis */
    int max_axis;			/* max number of axis */
    xmlXPathAxisPtr axis;		/* Array of defined axis */

    /* the namespace nodes of the context node */
    xmlNsPtr *namespaces;		/* Array of namespaces */
    int nsNr;				/* number of namespace in scope */
    void *user;				/* function to free */

    /* extra variables */
    int contextSize;			/* the context size */
    int proximityPosition;		/* the proximity position */

    /* extra stuff for XPointer */
    int xptr;				/* it this an XPointer context */
    xmlNodePtr here;			/* for here() */
    xmlNodePtr origin;			/* for origin() */

    /* the set of namespace declarations in scope for the expression */
    xmlHashTablePtr nsHash;		/* The namespaces hash table */
    void *varLookupFunc;		/* variable lookup func */
    void *varLookupData;		/* variable lookup data */

    /* Possibility to link in an extra item */
    void *extra;                        /* needed for XSLT */

    /* The function name and URI when calling a function */
    const xmlChar *function;
    const xmlChar *functionURI;

    /* function lookup function and data */
    void *funcLookupFunc;		/* function lookup func */
    void *funcLookupData;		/* function lookup data */

    /* temporary namespace lists kept for walking the namespace axis */
    xmlNsPtr *tmpNsList;		/* Array of namespaces */
    int tmpNsNr;			/* number of namespace in scope */
};</PRE
></TD
></TR
></TABLE
><P
>Expression evaluation occurs with respect to a context.
he context consists of:
- a node (the context node) 
- a node list (the context node list) 
- a set of variable bindings 
- a function library 
- the set of namespace declarations in scope for the expression 
Following the switch to hash tables, this need to be trimmed up at
the next binary incompatible release.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12190"
></A
><H3
><A
NAME="XMLXPATHCONTEXTPTR"
></A
>xmlXPathContextPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathContext *xmlXPathContextPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12195"
></A
><H3
><A
NAME="XMLXPATHPARSERCONTEXT"
></A
>struct xmlXPathParserContext</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathParserContext {
    const xmlChar *cur;			/* the current char being parsed */
    const xmlChar *base;			/* the full expression */

    int error;				/* error code */

    xmlXPathContextPtr  context;	/* the evaluation context */
    xmlXPathObjectPtr     value;	/* the current value */
    int                 valueNr;	/* number of values stacked */
    int                valueMax;	/* max number of values stacked */
    xmlXPathObjectPtr *valueTab;	/* stack of values */

    xmlXPathCompExprPtr comp;		/* the precompiled expression */
    int xptr;				/* it this an XPointer expression */
    xmlNodePtr         ancestor;	/* used for walking preceding axis */
};</PRE
></TD
></TR
></TABLE
><P
>An XPath parser context. It contains pure parsing informations,
an xmlXPathContext, and the stack of objects.</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12201"
></A
><H3
><A
NAME="XMLXPATHPARSERCONTEXTPTR"
></A
>xmlXPathParserContextPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathParserContext *xmlXPathParserContextPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12206"
></A
><H3
><A
NAME="XMLXPATHERROR"
></A
>enum xmlXPathError</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef enum {
    XPATH_EXPRESSION_OK = 0,
    XPATH_NUMBER_ERROR,
    XPATH_UNFINISHED_LITERAL_ERROR,
    XPATH_START_LITERAL_ERROR,
    XPATH_VARIABLE_REF_ERROR,
    XPATH_UNDEF_VARIABLE_ERROR,
    XPATH_INVALID_PREDICATE_ERROR,
    XPATH_EXPR_ERROR,
    XPATH_UNCLOSED_ERROR,
    XPATH_UNKNOWN_FUNC_ERROR,
    XPATH_INVALID_OPERAND,
    XPATH_INVALID_TYPE,
    XPATH_INVALID_ARITY,
    XPATH_INVALID_CTXT_SIZE,
    XPATH_INVALID_CTXT_POSITION,
    XPATH_MEMORY_ERROR,
    XPTR_SYNTAX_ERROR,
    XPTR_RESOURCE_ERROR,
    XPTR_SUB_RESOURCE_ERROR,
    XPATH_UNDEF_PREFIX_ERROR,
    XPATH_ENCODING_ERROR,
    XPATH_INVALID_CHAR_ERROR
} xmlXPathError;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12211"
></A
><H3
><A
NAME="XMLNODESET"
></A
>struct xmlNodeSet</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlNodeSet {
    int nodeNr;			/* number of nodes in the set */
    int nodeMax;		/* size of the array as allocated */
    xmlNodePtr *nodeTab;	/* array of nodes in no particular order */
    /* @@ with_ns to check wether namespace nodes should be looked at @@ */
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12216"
></A
><H3
><A
NAME="XMLNODESETPTR"
></A
>xmlNodeSetPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlNodeSet *xmlNodeSetPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12221"
></A
><H3
><A
NAME="XMLXPATHOBJECTTYPE"
></A
>enum xmlXPathObjectType</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef enum {
    XPATH_UNDEFINED = 0,
    XPATH_NODESET = 1,
    XPATH_BOOLEAN = 2,
    XPATH_NUMBER = 3,
    XPATH_STRING = 4,
    XPATH_POINT = 5,
    XPATH_RANGE = 6,
    XPATH_LOCATIONSET = 7,
    XPATH_USERS = 8,
    XPATH_XSLT_TREE = 9  /* An XSLT value tree, non modifiable */
} xmlXPathObjectType;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12226"
></A
><H3
><A
NAME="XMLXPATHOBJECT"
></A
>struct xmlXPathObject</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathObject {
    xmlXPathObjectType type;
    xmlNodeSetPtr nodesetval;
    int boolval;
    double floatval;
    xmlChar *stringval;
    void *user;
    int index;
    void *user2;
    int index2;
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12231"
></A
><H3
><A
NAME="XMLXPATHOBJECTPTR"
></A
>xmlXPathObjectPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathObject *xmlXPathObjectPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12236"
></A
><H3
><A
NAME="XMLXPATHCONVERTFUNC"
></A
>xmlXPathConvertFunc ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         (*xmlXPathConvertFunc)          (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj,
                                             int type);</PRE
></TD
></TR
></TABLE
><P
>A conversion function is associated to a type and used to cast
the new type to primitive values.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12243"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>obj</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>type</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the number of the target type</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>-1 in case of error, 0 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12260"
></A
><H3
><A
NAME="XMLXPATHTYPE"
></A
>struct xmlXPathType</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathType {
    const xmlChar         *name;		/* the type name */
    xmlXPathConvertFunc func;		/* the conversion function */
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12265"
></A
><H3
><A
NAME="XMLXPATHTYPEPTR"
></A
>xmlXPathTypePtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathType *xmlXPathTypePtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12270"
></A
><H3
><A
NAME="XMLXPATHVARIABLE"
></A
>struct xmlXPathVariable</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathVariable {
    const xmlChar       *name;		/* the variable name */
    xmlXPathObjectPtr value;		/* the value */
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12275"
></A
><H3
><A
NAME="XMLXPATHVARIABLEPTR"
></A
>xmlXPathVariablePtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathVariable *xmlXPathVariablePtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12280"
></A
><H3
><A
NAME="XMLXPATHEVALFUNC"
></A
>xmlXPathEvalFunc ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        (*xmlXPathEvalFunc)             (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             int nargs);</PRE
></TD
></TR
></TABLE
><P
>An XPath evaluation function, the parameters are on the XPath context stack.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12287"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> an XPath parser context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>nargs</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> the number of arguments passed to the function</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12300"
></A
><H3
><A
NAME="XMLXPATHFUNCT"
></A
>struct xmlXPathFunct</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathFunct {
    const xmlChar      *name;		/* the function name */
    xmlXPathEvalFunc func;		/* the evaluation function */
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12305"
></A
><H3
><A
NAME="XMLXPATHFUNCPTR"
></A
>xmlXPathFuncPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathFunct *xmlXPathFuncPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12310"
></A
><H3
><A
NAME="XMLXPATHAXISFUNC"
></A
>xmlXPathAxisFunc ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> (*xmlXPathAxisFunc)       (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             <A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> cur);</PRE
></TD
></TR
></TABLE
><P
>An axis traversal function. To traverse an axis, the engine calls
the first time with cur == NULL and repeat until the function returns
NULL indicating the end of the axis traversal.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12319"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath interpreter context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>cur</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the previous node being explored on that axis</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the next node in that axis or NULL if at the end of the axis.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12336"
></A
><H3
><A
NAME="XMLXPATHAXIS"
></A
>struct xmlXPathAxis</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathAxis {
    const xmlChar      *name;		/* the axis name */
    xmlXPathAxisFunc func;		/* the search function */
};</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12341"
></A
><H3
><A
NAME="XMLXPATHAXISPTR"
></A
>xmlXPathAxisPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathAxis *xmlXPathAxisPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12346"
></A
><H3
><A
NAME="XMLXPATHCOMPEXPR"
></A
>struct xmlXPathCompExpr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct xmlXPathCompExpr;</PRE
></TD
></TR
></TABLE
><P
>[14]   Expr ::=   OrExpr 
[21]   OrExpr ::=   AndExpr 
| OrExpr 'or' AndExpr </P
><P
>Parse and compile an expression</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12353"
></A
><H3
><A
NAME="XMLXPATHCOMPEXPRPTR"
></A
>xmlXPathCompExprPtr</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>typedef xmlXPathCompExpr *xmlXPathCompExprPtr;</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12358"
></A
><H3
><A
NAME="XMLXPATHFUNCTION"
></A
>xmlXPathFunction ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        (*xmlXPathFunction)             (<A
HREF="libxml-xpath.html#XMLXPATHPARSERCONTEXTPTR"
>xmlXPathParserContextPtr</A
> ctxt,
                                             int nargs);</PRE
></TD
></TR
></TABLE
><P
>An XPath function.
The arguments (if any) are popped out from the context stack
and the result is pushed on the stack.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12365"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath interprestation context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>nargs</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the number of arguments</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12378"
></A
><H3
><A
NAME="XMLXPATHISNAN"
></A
>xmlXPathIsNaN ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathIsNaN                   (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);</PRE
></TD
></TR
></TABLE
><P
>Provides a portable <GTKDOCLINK
HREF="ISNAN"
>isnan</GTKDOCLINK
>() function to detect whether a double
is a NotaNumber. Based on trio code
http://sourceforge.net/projects/ctrio/</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12386"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a double value</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>1 if the value is a NaN, 0 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12399"
></A
><H3
><A
NAME="XMLXPATHISINF"
></A
>xmlXPathIsInf ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathIsInf                   (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);</PRE
></TD
></TR
></TABLE
><P
>Provides a portable <GTKDOCLINK
HREF="ISINF"
>isinf</GTKDOCLINK
>() function to detect whether a double
is a +Infinite or -Infinite. Based on trio code
http://sourceforge.net/projects/ctrio/</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12407"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a double value</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>1 vi the value is +Infinite, -1 if -Infinite, 0 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12420"
></A
><H3
><A
NAME="XMLXPATHNODESETGETLENGTH"
></A
>xmlXPathNodeSetGetLength()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>#define xmlXPathNodeSetGetLength(ns) ((ns) ? (ns)-&gt;nodeNr : 0)</PRE
></TD
></TR
></TABLE
><P
>Implement a functionality similar to the DOM NodeList.length.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12426"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node-set</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12435"
></A
><H3
><A
NAME="XMLXPATHNODESETITEM"
></A
>xmlXPathNodeSetItem()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>#define     xmlXPathNodeSetItem(ns, index)</PRE
></TD
></TR
></TABLE
><P
>Implements a functionality similar to the DOM NodeList.<GTKDOCLINK
HREF="ITEM"
>item</GTKDOCLINK
>().</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12442"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node-set</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>index</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  index of a node in the set</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12455"
></A
><H3
><A
NAME="XMLXPATHNODESETISEMPTY"
></A
>xmlXPathNodeSetIsEmpty()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>#define     xmlXPathNodeSetIsEmpty(ns)</PRE
></TD
></TR
></TABLE
><P
>Checks whether <TT
CLASS="PARAMETER"
><I
>ns</I
></TT
> is empty or not.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12462"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
> a node-set</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12471"
></A
><H3
><A
NAME="XMLXPATHFREEOBJECT"
></A
>xmlXPathFreeObject ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathFreeObject              (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj);</PRE
></TD
></TR
></TABLE
><P
>Free up an xmlXPathObjectPtr object.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12478"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>obj</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the object to free</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12487"
></A
><H3
><A
NAME="XMLXPATHNODESETCREATE"
></A
>xmlXPathNodeSetCreate ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> xmlXPathNodeSetCreate         (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Create a new xmlNodeSetPtr of type double and of value <TT
CLASS="PARAMETER"
><I
>val</I
></TT
></P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12496"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an initial xmlNodePtr, or NULL</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the newly created object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12509"
></A
><H3
><A
NAME="XMLXPATHFREENODESETLIST"
></A
>xmlXPathFreeNodeSetList ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathFreeNodeSetList         (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> obj);</PRE
></TD
></TR
></TABLE
><P
>Free up the xmlXPathObjectPtr <TT
CLASS="PARAMETER"
><I
>obj</I
></TT
> but don't deallocate the objects in
the list contrary to <A
HREF="libxml-xpath.html#XMLXPATHFREEOBJECT"
>xmlXPathFreeObject</A
>().</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12518"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>obj</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an existing NodeSetList object</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12527"
></A
><H3
><A
NAME="XMLXPATHFREENODESET"
></A
>xmlXPathFreeNodeSet ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathFreeNodeSet             (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> obj);</PRE
></TD
></TR
></TABLE
><P
>Free the NodeSet compound (not the actual nodes !).</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12534"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>obj</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the xmlNodeSetPtr to free</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12543"
></A
><H3
><A
NAME="XMLXPATHOBJECTCOPY"
></A
>xmlXPathObjectCopy ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathObjectCopy        (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>allocate a new copy of a given object</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12551"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the original object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the newly created object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12564"
></A
><H3
><A
NAME="XMLXPATHCMPNODES"
></A
>xmlXPathCmpNodes ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathCmpNodes                (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node1,
                                             <A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node2);</PRE
></TD
></TR
></TABLE
><P
>Compare two nodes w.r.t document order</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12572"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>node1</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the first node</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>node2</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the second node</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>-2 in case of error 1 if first point &lt; second point, 0 if
that's the same node, -1 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12589"
></A
><H3
><A
NAME="XMLXPATHCASTNUMBERTOBOOLEAN"
></A
>xmlXPathCastNumberToBoolean ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathCastNumberToBoolean     (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts a number to its boolean value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12596"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a number</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the boolean value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12609"
></A
><H3
><A
NAME="XMLXPATHCASTSTRINGTOBOOLEAN"
></A
>xmlXPathCastStringToBoolean ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathCastStringToBoolean     (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *val);</PRE
></TD
></TR
></TABLE
><P
>Converts a string to its boolean value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12616"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a string</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the boolean value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12629"
></A
><H3
><A
NAME="XMLXPATHCASTNODESETTOBOOLEAN"
></A
>xmlXPathCastNodeSetToBoolean ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathCastNodeSetToBoolean    (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);</PRE
></TD
></TR
></TABLE
><P
>Converts a node-set to its boolean value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12636"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node-set</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the boolean value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12649"
></A
><H3
><A
NAME="XMLXPATHCASTTOBOOLEAN"
></A
>xmlXPathCastToBoolean ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathCastToBoolean           (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an XPath object to its boolean value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12656"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the boolean value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12669"
></A
><H3
><A
NAME="XMLXPATHCASTBOOLEANTONUMBER"
></A
>xmlXPathCastBooleanToNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      xmlXPathCastBooleanToNumber     (int val);</PRE
></TD
></TR
></TABLE
><P
>Converts a boolean to its number value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12676"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a boolean</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the number value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12689"
></A
><H3
><A
NAME="XMLXPATHCASTSTRINGTONUMBER"
></A
>xmlXPathCastStringToNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      xmlXPathCastStringToNumber      (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *val);</PRE
></TD
></TR
></TABLE
><P
>Converts a string to its number value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12697"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a string</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the number value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12710"
></A
><H3
><A
NAME="XMLXPATHCASTNODETONUMBER"
></A
>xmlXPathCastNodeToNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      xmlXPathCastNodeToNumber        (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node);</PRE
></TD
></TR
></TABLE
><P
>Converts a node to its number value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12718"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>node</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the number value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12731"
></A
><H3
><A
NAME="XMLXPATHCASTNODESETTONUMBER"
></A
>xmlXPathCastNodeSetToNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      xmlXPathCastNodeSetToNumber     (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);</PRE
></TD
></TR
></TABLE
><P
>Converts a node-set to its number value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12739"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node-set</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the number value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12752"
></A
><H3
><A
NAME="XMLXPATHCASTTONUMBER"
></A
>xmlXPathCastToNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
>      xmlXPathCastToNumber            (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an XPath object to its number value</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12760"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the number value</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12773"
></A
><H3
><A
NAME="XMLXPATHCASTBOOLEANTOSTRING"
></A
>xmlXPathCastBooleanToString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    xmlXPathCastBooleanToString     (int val);</PRE
></TD
></TR
></TABLE
><P
>Converts a boolean to its string value.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12780"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a boolean</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>a newly allocated string.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12793"
></A
><H3
><A
NAME="XMLXPATHCASTNUMBERTOSTRING"
></A
>xmlXPathCastNumberToString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    xmlXPathCastNumberToString      (<GTKDOCLINK
HREF="DOUBLE"
>double</GTKDOCLINK
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts a number to its string value.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12801"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a number</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>a newly allocated string.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12814"
></A
><H3
><A
NAME="XMLXPATHCASTNODETOSTRING"
></A
>xmlXPathCastNodeToString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    xmlXPathCastNodeToString        (<A
HREF="libxml-tree.html#XMLNODEPTR"
>xmlNodePtr</A
> node);</PRE
></TD
></TR
></TABLE
><P
>Converts a node to its string value.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12822"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>node</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>a newly allocated string.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12835"
></A
><H3
><A
NAME="XMLXPATHCASTNODESETTOSTRING"
></A
>xmlXPathCastNodeSetToString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    xmlXPathCastNodeSetToString     (<A
HREF="libxml-xpath.html#XMLNODESETPTR"
>xmlNodeSetPtr</A
> ns);</PRE
></TD
></TR
></TABLE
><P
>Converts a node-set to its string value.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12843"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ns</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  a node-set</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>a newly allocated string.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12856"
></A
><H3
><A
NAME="XMLXPATHCASTTOSTRING"
></A
>xmlXPathCastToString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
>*    xmlXPathCastToString            (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an existing object to its <GTKDOCLINK
HREF="STRING"
>string</GTKDOCLINK
>() equivalent</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12865"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the string value of the object, NULL in case of error.
A new string is allocated only if needed (<TT
CLASS="PARAMETER"
><I
>val</I
></TT
> isn't a
string object).</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12879"
></A
><H3
><A
NAME="XMLXPATHCONVERTBOOLEAN"
></A
>xmlXPathConvertBoolean ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathConvertBoolean    (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an existing object to its <GTKDOCLINK
HREF="BOOLEAN"
>boolean</GTKDOCLINK
>() equivalent</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12888"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the new object, the old one is freed (or the operation
is done directly on <TT
CLASS="PARAMETER"
><I
>val</I
></TT
>)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12902"
></A
><H3
><A
NAME="XMLXPATHCONVERTNUMBER"
></A
>xmlXPathConvertNumber ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathConvertNumber     (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an existing object to its <GTKDOCLINK
HREF="NUMBER"
>number</GTKDOCLINK
>() equivalent</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12911"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the new object, the old one is freed (or the operation
is done directly on <TT
CLASS="PARAMETER"
><I
>val</I
></TT
>)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12925"
></A
><H3
><A
NAME="XMLXPATHCONVERTSTRING"
></A
>xmlXPathConvertString ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathConvertString     (<A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> val);</PRE
></TD
></TR
></TABLE
><P
>Converts an existing object to its <GTKDOCLINK
HREF="STRING"
>string</GTKDOCLINK
>() equivalent</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12934"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>val</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPath object</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the new object, the old one is freed (or the operation
is done directly on <TT
CLASS="PARAMETER"
><I
>val</I
></TT
>)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12948"
></A
><H3
><A
NAME="XMLXPATHINIT"
></A
>xmlXPathInit ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathInit                    (void);</PRE
></TD
></TR
></TABLE
><P
>Initialize the XPath environment</P
><P
></P
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12954"
></A
><H3
><A
NAME="XMLXPATHNEWCONTEXT"
></A
>xmlXPathNewContext ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> xmlXPathNewContext       (<A
HREF="libxml-tree.html#XMLDOCPTR"
>xmlDocPtr</A
> doc);</PRE
></TD
></TR
></TABLE
><P
>Create a new xmlXPathContext</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12962"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>doc</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XML document</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the xmlXPathContext just allocated. The caller will need to free it.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12975"
></A
><H3
><A
NAME="XMLXPATHFREECONTEXT"
></A
>xmlXPathFreeContext ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathFreeContext             (<A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt);</PRE
></TD
></TR
></TABLE
><P
>Free up an xmlXPathContext</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN12982"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the context to free</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN12991"
></A
><H3
><A
NAME="XMLXPATHEVAL"
></A
>xmlXPathEval ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathEval              (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctx);</PRE
></TD
></TR
></TABLE
><P
>Evaluate the XPath Location Path in the given context.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN13000"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>str</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath expression</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctx</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the xmlXPathObjectPtr resulting from the evaluation or NULL.
the caller has to free the object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN13017"
></A
><H3
><A
NAME="XMLXPATHEVALEXPRESSION"
></A
>xmlXPathEvalExpression ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathEvalExpression    (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt);</PRE
></TD
></TR
></TABLE
><P
>Evaluate the XPath expression in the given context.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN13026"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>str</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath expression</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the xmlXPathObjectPtr resulting from the evaluation or NULL.
the caller has to free the object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN13043"
></A
><H3
><A
NAME="XMLXPATHEVALPREDICATE"
></A
>xmlXPathEvalPredicate ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>int         xmlXPathEvalPredicate           (<A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctxt,
                                             <A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> res);</PRE
></TD
></TR
></TABLE
><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
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN13051"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctxt</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>res</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the Predicate Expression evaluation result</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>1 if predicate is true, 0 otherwise</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN13068"
></A
><H3
><A
NAME="XMLXPATHCOMPILE"
></A
>xmlXPathCompile ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> xmlXPathCompile         (const <A
HREF="libxml-tree.html#XMLCHAR"
>xmlChar</A
> *str);</PRE
></TD
></TR
></TABLE
><P
>Compile an XPath expression</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN13076"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>str</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath expression</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the xmlXPathObjectPtr resulting from the evaluation or NULL.
the caller has to free the object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN13089"
></A
><H3
><A
NAME="XMLXPATHCOMPILEDEVAL"
></A
>xmlXPathCompiledEval ()</H3
><TABLE
BORDER="0"
BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
><A
HREF="libxml-xpath.html#XMLXPATHOBJECTPTR"
>xmlXPathObjectPtr</A
> xmlXPathCompiledEval      (<A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> comp,
                                             <A
HREF="libxml-xpath.html#XMLXPATHCONTEXTPTR"
>xmlXPathContextPtr</A
> ctx);</PRE
></TD
></TR
></TABLE
><P
>Evaluate the Precompiled XPath expression in the given context.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN13098"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>comp</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the compiled XPath expression</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>ctx</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  the XPath context</TD
></TR
><TR
><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><I
CLASS="EMPHASIS"
>Returns</I
> :</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>the xmlXPathObjectPtr resulting from the evaluation or NULL.
the caller has to free the object.</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><HR><DIV
CLASS="REFSECT2"
><A
NAME="AEN13115"
></A
><H3
><A
NAME="XMLXPATHFREECOMPEXPR"
></A
>xmlXPathFreeCompExpr ()</H3
><TABLE
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BGCOLOR="#D6E8FF"
WIDTH="100%"
CELLPADDING="6"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void        xmlXPathFreeCompExpr            (<A
HREF="libxml-xpath.html#XMLXPATHCOMPEXPRPTR"
>xmlXPathCompExprPtr</A
> comp);</PRE
></TD
></TR
></TABLE
><P
>Free up the memory allocated by <TT
CLASS="PARAMETER"
><I
>comp</I
></TT
></P
><P
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><TD
WIDTH="20%"
ALIGN="RIGHT"
VALIGN="TOP"
><TT
CLASS="PARAMETER"
><I
>comp</I
></TT
>&nbsp;:</TD
><TD
WIDTH="80%"
ALIGN="LEFT"
VALIGN="TOP"
>  an XPATH comp</TD
></TR
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