Function xmlXPathEvalExpression 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlXPathEvalExpression(
    _str: *const xmlChar,
    _ctxt: *mut _xmlXPathContext,
) -> *mut _xmlXPathObject

Evaluate an XPath expression.

UPSTREAM-PARITY

xmlXPathObjectPtr xmlXPathEvalExpression(const xmlChar *str,
                                         xmlXPathContextPtr ctxt);