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Library/boost/libs/preprocessor/doc/ref/div_d.html
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PatoFlamejanteTV
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19 дек 2024, 19:11
19 дек 2024, 19:11
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<html> <head> <title>BOOST_PP_DIV_D</title> <link rel="stylesheet" type="text/css" href="../styles.css"> </head> <body> <div style="margin-left: 0px;"> The <b>BOOST_PP_DIV_D</b> macro expands to the quotient of its second and third arguments. It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency. </div> <h4>Usage</h4> <div class="code"> <b>BOOST_PP_DIV_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. </dd> <dt>x</dt> <dd> The dividend (numerator) of the operation. Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>. </dd> <dt>y</dt> <dd> The divisor (denominator) of the operation. Valid values range from <i>1</i> to <b>BOOST_PP_LIMIT_MAG</b>. </dd> </dl> <h4>Remarks</h4> <div> If <i>y</i> is <i>0</i>, the result is undefined. </div> <h4>See Also</h4> <ul> <li><a href="div.html">BOOST_PP_DIV</a></li> <li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li> </ul> <h4>Requirements</h4> <div> <b>Header:</b> <a href="../headers/arithmetic/div.html"><boost/preprocessor/arithmetic/div.hpp></a> </div> <h4>Sample Code</h4> <div><pre> #include <<a href="../headers/arithmetic/dec.html">boost/preprocessor/arithmetic/dec.hpp</a>> #include <<a href="../headers/arithmetic/div.html">boost/preprocessor/arithmetic/div.hpp</a>> #include <<a href="../headers/control/while.html">boost/preprocessor/control/while.hpp</a>> #include <<a href="../headers/tuple/elem.html">boost/preprocessor/tuple/elem.hpp</a>> #define PRED(d, data) <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 0, data) #define OP(d, data) \ ( \ <a href="dec.html">BOOST_PP_DEC</a>( \ <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 0, data) \ ), \ <a href="div_d.html">BOOST_PP_DIV_D</a>( \ d, \ <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 1, data), \ 2 \ ) \ ) \ /**/ // halve 'x' 'n' times #define HALVE(x, n) <a href="tuple_elem.html">BOOST_PP_TUPLE_ELEM</a>(2, 1, <a href="while.html">BOOST_PP_WHILE</a>(PRED, OP, (n, x))) HALVE(8, 2) // expands to 2 HALVE(16, 1) // expands to 8 </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> </html>