lass="code" href="a00732.html#gaba86c28da7bf5bdac64fecf7d56e8ff3">atan2</a>(T x, T y){<span class="keywordflow">return</span> <a class="code" href="a00790.html#gac61629f3a4aa14057e7a8cae002291db">atan</a>(x, y);}                                                              </div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="a00732.html#ga83bc41bd6f89113ee8006576b12bfc50">   56</a></span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</spa