<map id="ystdex::round_in" name="ystdex::round_in">
<area shape="rect" id="node1" title=" " alt="" coords="5,31,125,57"/>
<area shape="rect" id="node2" href="$d7/d04/a01246.xhtml#a0afba3784e59d3a3b87b0e21daea0241" title="判断指定的值是否为零值。" alt="" coords="205,5,316,32"/>
<area shape="rect" id="node3" href="$d7/d04/a01246.xhtml#a2dc039db00def104b5ee5218ff4f853c" title="指定误差内舍入。" alt="" coords="173,56,348,83"/>
</map>
