et, the bit at
position pos takes on the value of the bit at position <tt>pos +
n</tt> of this bitset, or zero if no such bit exists.<br />
 <b>Throws:</b> An allocation error if memory is exhausted
(<tt>std::bad_alloc</tt> if <tt>Allocator=std::allocator</tt>).

<hr />
<pre>
dynamic_bitset&amp; <a id="set1">set</a>()
</pre>

<b>Effects:</b> Sets every bit in this bitset to 1.<br />
<b>Returns:</b> <tt>*this</tt><br />
<b>Throws:</b> nothing.

<hr />
<pre>
dynamic_bitset&amp; <a id="flip1">flip</a>()
</pre>