---------------------------------------------------------------</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    GTS_INLINE range_type <span class="keyword">const</span>&amp; zRange()<span class="keyword"> const</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="keyword">    </span>{</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        <span class="keywordflow">return</sp