mory is exhausted
(<tt>std::bad_alloc</tt> if <tt>Allocator=std::allocator</tt>).

<hr />
<pre>
allocator_type <a id="get_allocator">get_allocator()</a> const;
</pre>
 <b>Returns:</b> A copy of the allocator object used to construct <tt>*this</tt>.

<hr />
<pre>
void <a id=
"resize">resize</a>(size_type num_bits, bool value = false);
</pre>

<b>Effects:</b> Changes the number of bits of the bitset to
<tt>num_bits</tt>. If <tt>num_bits &gt; size()</tt> then the bits
in the range <tt>[0,size())</tt> remain th