 &lt;&lt; <a class="code hl_class" href="classnc_1_1coordinates_1_1_euler.html">Euler</a>.<a class="code hl_variable" href="classnc_1_1coordinates_1_1_euler.html#ab6e8553cb29e3b38932353c7808df47d">psi</a> &lt;&lt; <span class="stringliteral">&quot;, theta=&quot;</span> &lt;&lt; <a class="code hl_class" href="classnc_1_1coordinates_1_1_euler.html">Euler</a>.<a class="code hl_variable" href="classnc_1_1coordinates_1_1_euler.html#acdcc1795fe468bb026d4da943b50b6a4">theta</a> &lt;&lt; <span class="stringliteral"