flow">return</span> *(*<span class="keyword">this</span>+d); }
<a name="l00170"></a>00170 
<a name="l00171"></a>00171     <span class="keywordtype">void</span> set_step(std::ptrdiff_t memunit_step) { this-&gt;_step_fn.set_step(memunit_step); }
<a name="l00172"></a>00172 
<a name="l00173"></a>00173     x_iterator&amp; base()              { <span class="keywordflow">return</span> parent_t::base_reference(); }
<a name="l00174"></a>00174     x_iterator <span class="keyword">const</span>&amp; base()<span class="