forked from boostorg/preprocessor
67 lines
2.0 KiB
HTML
67 lines
2.0 KiB
HTML
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<html>
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<head>
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<title>BOOST_PP_MOD_D</title>
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<link rel="stylesheet" type="text/css" href="../styles.css">
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<script language="javascript" type="text/javascript" src="../scripts.js"></script>
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</head>
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<body onload="init('sample');">
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<div style="margin-left: 0px;">
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The <b>BOOST_PP_MOD_D</b> macro expands to the modulus of its second and third arguments.
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It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency.
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</div>
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<h4>Usage</h4>
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<div class="code">
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<b>BOOST_PP_MOD_D</b>(<i>d</i>, <i>x</i>, <i>y</i>)
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</div>
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<h4>Arguments</h4>
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<dl>
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<dt>d</dt>
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<dd>
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The next available <b>BOOST_PP_WHILE</b> iteration.
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</dd>
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<dt>x</dt>
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<dd>
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The dividend (numerator) of the operation.
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Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>.
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</dd>
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<dt>y</dt>
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<dd>
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The divisor (denominator) of the operation.
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Valid values range from <i>1</i> to <b>BOOST_PP_LIMIT_MAG</b>.
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</dd>
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</dl>
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<h4>Remarks</h4>
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<div>
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If <i>y</i> is <i>0</i>, the result is undefined.
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</div>
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<h4>See Also</h4>
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<ul>
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<li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li>
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<li><a href="mod.html">BOOST_PP_MOD</a></li>
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</ul>
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<h4>Requirements</h4>
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<div>
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<b>Header:</b> <a href="../headers/arithmetic/div.hpp.html"><boost/preprocessor/arithmetic/div.hpp></a>
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</div>
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<h4><a class="local" onclick="toggle('sample');" onmouseover="change(this);" onmouseout="revert(this);">Sample Code</a></h4>
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<div id="sample"><pre>
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#include <boost/preprocessor/arithmetic/mod.hpp>
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#include <boost/preprocessor/list/filter.hpp>
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#include <boost/preprocessor/logical/not.hpp>
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#define LIST (1, (2, (3, (4, (5, BOOST_PP_NIL)))))
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#define EVEN_P(d, _, num) BOOST_PP_NOT(BOOST_PP_MOD_D(d, num, 2))
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#define EVEN(list) BOOST_PP_LIST_FILTER(EVEN_P, nil, list)
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EVEN(LIST) // expands to (2, (4, BOOST_PP_NIL))
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#define ODD_P(d, _, num) BOOST_PP_MOD_D(d, num, 2)
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#define ODD(list) BOOST_PP_LIST_FILTER(ODD_P, nil, list)
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ODD(LIST) // expands to (1, (3, (5, BOOST_PP_NIL)))
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<pre></div>
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</body>
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</html>
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