ment">// <a class="link" href="param_type.html#id-1_3_35_5_6_48_1_1_1_3_2-bb">public member functions</a></span>
  <span class="identifier">RealType</span> <a class="link" href="param_type.html#id-1_3_35_5_6_48_1_1_1_3_2_1-bb"><span class="identifier">a</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">RealType</span> <a class="link" href="param_type.html#id-1_3_35_5_6_48_1_1_1_3_2_2-bb"><span cl