ywordtype">float</span> zz = q-&gt;z * q-&gt;z;
<a name="l00237"></a>00237     <span class="keywordtype">float</span> zw = q-&gt;z * q-&gt;w;
<a name="l00238"></a>00238 
<a name="l00239"></a>00239     m-&gt;m[0]  = 1.0f - 2.0f * ( yy + zz );
<a name="l00240"></a>00240     m-&gt;m[4]  =        2.0f * ( xy - zw );
<a name="l00241"></a>00241     m-&gt;m[8]  =        2.0f * ( xz + yw );
<a name="l00242"></a>00242     m-&gt;m[1]  =        2.0f * ( xy + zw );
<a name="l00243"></a>00243     m-&gt;m[5]  = 1.0f - 2.