=&gt; quaternion_from_angle_axis</td><td class="entry"><a class="el" href="structkinematics_1_1quaternion.html">kinematics::quaternion</a></td><td class="entry"></td></tr>
  <tr class="even"><td class="entry"><a class="el" href="structkinematics_1_1quaternion.html#a0a25933aa477b681a6b552c2a68daeeb">from_matrix</a>=&gt; quaternion_from_matrix</td><td class="entry"><a class="el" href="structkinematics_1_1quaternion.html">kinematics::quaternion</a></td><td class="entry"></td></tr>
  <tr><td class="entry"><a cl