 charmask(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> x) {</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keywordflow">return</span> (x&amp;6)&gt;&gt;1;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;  }</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  <span class="k