ass="lineno">  159</span>&#160;{ <span class="keywordflow">return</span> <a class="code" href="classnubot_1_1DPoint__.html">DPoint_&lt;_Tp&gt;</a>( _Tp(a.<a class="code" href="classnubot_1_1DPoint__.html#a331b9929a84f05c009479ec70b88be37">x_</a> - b.<a class="code" href="classnubot_1_1DPoint__.html#a331b9929a84f05c009479ec70b88be37">x_</a>), _Tp(a.<a class="code" href="classnubot_1_1DPoint__.html#af48f202ad9774bb7bb51ffe0e9932e7e">y_</a> - b.<a class="code" href="classnubot_1_1DPoint__.html#af48f202ad9774bb