user in a <i><span class="RenoLink"><a href="quat_traits.html">quat_traits</a></span></i> specialization is <i><span class="RenoLink"><a href="quat_traits_Q_write_element.html">write_element</a></span></i>; the <i><span class="RenoLink">quat_traits_defaults</span></i> base will define <i><span class="RenoLink"><a href="quat_traits_Q_read_element.html">read_element</a></span></i>, as well as <i><span class="RenoLink"><a href="quat_traits_Q_scalar_type.html">scalar_type</a></span></i> automatically.</p>
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