Function xmlXPathCastToNumberInternal

ThirdParty/libxml2/vtklibxml2/xpath.c:1992–2037

* xmlXPathCastToNumberInternal: * @ctxt: parser context * @val: an XPath object * * Converts an XPath object to its number value * * Returns the number value */

 * Returns the number value
 */
static double
xmlXPathCastToNumberInternal(xmlXPathParserContextPtr ctxt,
                             xmlXPathObjectPtr val) {
    double ret = 0.0;

    if (val == NULL)
	return(xmlXPathNAN);
    switch (val->type) {
    case XPATH_UNDEFINED:
	ret = xmlXPathNAN;
	break;
    case XPATH_NODESET:
    case XPATH_XSLT_TREE: {
        xmlChar *str;

	str = xmlXPathCastNodeSetToString(val->nodesetval);
        if (str == NULL) {
            xmlXPathPErrMemory(ctxt);
            ret = xmlXPathNAN;
        } else {
	    ret = xmlXPathCastStringToNumber(str);
            xmlFree(str);
        }
	break;
    }
    case XPATH_STRING:
	ret = xmlXPathCastStringToNumber(val->stringval);
	break;
    case XPATH_NUMBER:
	ret = val->floatval;
	break;
    case XPATH_BOOLEAN:
	ret = xmlXPathCastBooleanToNumber(val->boolval);
	break;
    case XPATH_USERS:
#ifdef LIBXML_XPTR_LOCS_ENABLED
    case XPATH_POINT:
    case XPATH_RANGE:
    case XPATH_LOCATIONSET:
#endif /* LIBXML_XPTR_LOCS_ENABLED */
	/* TODO */
	ret = xmlXPathNAN;
	break;
    }
    return(ret);
}

/**
 * valuePop: