pan><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">InputIterator</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">istreambuf_iterator</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">&gt;</span> <span class="special">&gt;</span> <span class="keyword">class</span> <span class="identifier">nonfinite_num_get</span><span class="special">;