</a><span class="lineno">   56</span>&#160;        <span class="keyword">typedef</span> tvec1&lt;double, packed_highp&gt;             packed_highp_dvec1;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <span class="keyword">typedef</span> tvec1&lt;double, packed_mediump&gt;   packed_mediump_dvec1;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keyword">typedef</span> tvec1&lt;double, packed_lowp&gt;        