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[SVN r15693]
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Paul Mensonides
2002-10-03 22:13:37 +00:00
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commit 4bb690a819
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<html>
<head>
<title>BOOST_PP_GREATER_D</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_GREATER_D</b> macro compares two values for greater magnitude.&nbsp;
It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_GREATER_D</b>(<i>d</i>, <i>x</i>, <i>y</i>)
</div>
<h4>Arguments</h4>
<dl>
<dt>d</dt>
<dd>
The next available <b>BOOST_PP_WHILE</b> iteration.&nbsp;
</dd>
<dt>x</dt>
<dd>
The left operand of the comparison.&nbsp;
Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
</dd>
<dt>y</dt>
<dd>
The right operand of the comparison.&nbsp;
Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
</dd>
</dl>
<h4>Remarks</h4>
<div>
If <i>x</i> is greater than <i>y</i>, this macro expands to <i>1</i>.&nbsp;
Otherwise, it expands to <i>0</i>.
</div>
<h4>See Also</h4>
<ul>
<li><a href="greater.html">BOOST_PP_GREATER</a></li>
<li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li>
</ul>
<h4>Requirements</h4>
<div>
<b>Header:</b> &nbsp;<a href="../headers/comparison/greater.hpp.html">&lt;boost/preprocessor/comparison/greater.hpp&gt;</a>
</div>
<h4>Sample Code</h4>
<div><pre>
#include &lt;<a href="../headers/comparison/greater.hpp.html">boost/preprocessor/comparison/greater.hpp</a>&gt;
#include &lt;<a href="../headers/list/filter.hpp.html">boost/preprocessor/list/filter.hpp</a>&gt;
#define LIST (1, (2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))))
#define PRED(d, _, num) <a href="greater_d.html">BOOST_PP_GREATER_D</a>(d, num, 2)
<a href="list_filter.html">BOOST_PP_LIST_FILTER</a>(PRED, nil, LIST) // expands to (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>)))
</pre></div>
</body>
</html>