<map id="std::ratio_equal< _R1, _R2 >" name="std::ratio_equal< _R1, _R2 >"> <area shape="rect" id="node1" title="ratio_equal" alt="" coords="45,105,161,144"/> <area shape="rect" id="node2" href="$a03040.html" title=" " alt="" coords="5,5,200,57"/> </map>