Function xmlXPathNumberFunction

ThirdParty/libxml2/vtklibxml2/xpath.c:8526–8557

* xmlXPathNumberFunction: * @ctxt: the XPath Parser context * @nargs: the number of arguments * * Implement the number() XPath function * number number(object?) */

 *    number number(object?)
 */
void
xmlXPathNumberFunction(xmlXPathParserContextPtr ctxt, int nargs) {
    xmlXPathObjectPtr cur;
    double res;

    if (ctxt == NULL) return;
    if (nargs == 0) {
	if (ctxt->context->node == NULL) {
	    valuePush(ctxt, xmlXPathCacheNewFloat(ctxt, 0.0));
	} else {
	    xmlChar* content = xmlNodeGetContent(ctxt->context->node);
            if (content == NULL)
                xmlXPathPErrMemory(ctxt);

	    res = xmlXPathStringEvalNumber(content);
	    valuePush(ctxt, xmlXPathCacheNewFloat(ctxt, res));
	    xmlFree(content);
	}
	return;
    }

    CHECK_ARITY(1);
    cur = valuePop(ctxt);
    if (cur->type != XPATH_NUMBER) {
        double floatval;

        floatval = xmlXPathCastToNumberInternal(ctxt, cur);
        xmlXPathReleaseObject(ctxt->context, cur);
        cur = xmlXPathCacheNewFloat(ctxt, floatval);
    }
    valuePush(ctxt, cur);
}

/**
 * xmlXPathSumFunction: