 the second block
written the bits in the range
<tt>[bits_pre_block,2*bits_per_block)</tt>, and so on. For each
block <tt>bval</tt> written, the bit <tt>(bval &gt;&gt; i) &amp;
1</tt> corresponds to the bit at position <tt>(b * bits_per_block
+ i)</tt> in the bitset.<br />
 <b>Requires:</b> The type <tt>BlockOutputIterator</tt> must be a
model of <a href=
"https://boost.org/sgi/stl/OutputIterator.html">Output
Iterator</a> and its <tt>value_type</tt> must be the same type as
<tt>Block</tt>. Further, the size