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		<title>BOOST_PP_SEQ_FILTER</title>
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		<div style="margin-left:  0px;">
			The <b>BOOST_PP_SEQ_FILTER</b> macro filters a <i>seq</i> according to a 
			supplied criterion.
		</div>
		<h4>
			Usage
		</h4>
		<div class="code">
			<b>BOOST_PP_SEQ_FILTER</b>(<i>pred</i>, <i>data</i>, <i>seq</i>)
		</div>
		<h4>
			Arguments
		</h4>
		<dl>
			<dt>pred</dt>
			<dd>
				A ternary predicate of the form <i>pred</i>(<i>s</i>, <i>data</i>, <i>elem</i>).&nbsp; 
				This predicate is expanded by <b>BOOST_PP_SEQ_FILTER</b> for each element in <i>seq</i>
				with the next available <b>BOOST_PP_SEQ_FOLD_LEFT</b> fold step, the auxiliary <i>data</i>, 
				and the current element in <i>seq</i>.&nbsp; This macro must return a integral 
				value in the range of <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.&nbsp; If this 
				predicate expands to non-zero for a certain element, that element is included 
				in the resulting <i>seq</i>.
			</dd>
			<dt>data</dt>
			<dd>
				Auxiliary data passed to <i>pred</i>.
			</dd>
			<dt>seq</dt>
			<dd>
				The <i>seq</i> to be filtered.
			</dd>
		</dl>
		<h4>
			Remarks
		</h4>
		<div>
			This macro expands <i>pred</i> for each element in <i>seq</i>.&nbsp; It builds 
			a new <i>seq</i> out of each element for which <i>pred</i> returns non-zero.
		</div>
		<div>
			For maximum efficiency, use <b>BOOST_PP_SEQ_FILTER_S</b>.
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		<h4>
			See Also
		</h4>
		<ul>
			<li>
				<a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li>
			<li>
				<a href="seq_filter_s.html">BOOST_PP_SEQ_FILTER_S</a></li>
		</ul>
		<h4>
			Requirements
		</h4>
		<div>
			<b>Header:</b> &nbsp;<a href="../headers/seq/filter.html">&lt;boost/preprocessor/seq/filter.hpp&gt;</a>
		</div>
		<h4>
			Sample Code
		</h4>
		<div>
			<pre>
#include &lt;<a href="../headers/comparison/less_equal.html">boost/preprocessor/comparison/less_equal.hpp</a>&gt;
#include &lt;<a href="../headers/seq/filter.html">boost/preprocessor/seq/filter.hpp</a>&gt;

#define SEQ (1)(3)(2)(5)

#define PRED(s, data, elem) <a href="less_equal.html">BOOST_PP_LESS_EQUAL</a>(elem, data)

<a href="seq_filter.html">BOOST_PP_SEQ_FILTER</a>(PRED, 3, SEQ)
   // expands to (1)(3)(2)
</pre>
		</div>
	<hr size="1">
	<div style="margin-left: 0px;">
		<i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
		</br><i>© Copyright Paul Mensonides 2002</i>
	</div>
	<div style="margin-left: 0px;">
		<p><small>Distributed under the Boost Software License, Version 1.0. (See
		accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
		copy at <a href=
		"http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
	</div>
	</body>
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