ifier">get_offset</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">date_type</span> <span class="special">&amp;</span> d<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="identifier">duration_type</span> <a name="id-1_3_12_15_3_2_1_1_3_5_2-bb"></a><span class="identifier">get_neg_offset</span><span class="special">(</span><span class="keyword">co