>
</h5></div></div></div>
<p>
          <a class="indexterm" name="idp106720160"></a>
Return the maximum sum of input and output sizes
          that can be held without an allocation.
        </p>
<h6>
<a name="beast.ref.boost__beast__flat_static_buffer.capacity.h0"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__flat_static_buffer.capacity.synopsis"></a></span><a class="link" href="capacity.html#beast.ref.boost__beast__flat_static_buffer.capacity.synopsis">Synopsis</a>
        </h6>
<