t unsigned built-in
integral type.  The following table describes the members of an
instantiation of <code>high_bit_mask_t</code>.</p>

<table border="1" cellpadding="5">
	<caption>Members of the <code>boost::high_bit_mask_t</code> Class
		Template</caption>
	<tr>
		<th>Member</th>
		<th>Meaning</th>
	</tr>
	<tr>
		<td><code>least</code></td>
		<td>The smallest unsigned built-in type that supports the given
			bit position.</td>
	</tr>
	<tr>
		<td><code>fast</code></td>
		<td>The quick-to-manipulate analog 