1<html> 2<head> 3 <title>BOOST_PP_LESS_D</title> 4 <link rel="stylesheet" type="text/css" href="../styles.css"> 5</head> 6<body> 7 <div style="margin-left: 0px;"> 8 The <b>BOOST_PP_LESS_D</b> macro compares two values for lesser magnitude. 9 It reenters <b>BOOST_PP_WHILE</b> with maximum efficiency. 10 </div> 11 <h4>Usage</h4> 12 <div class="code"> 13 <b>BOOST_PP_LESS_D</b>(<i>d</i>, <i>x</i>, <i>y</i>) 14 </div> 15 <h4>Arguments</h4> 16 <dl> 17 <dt>d</dt> 18 <dd> 19 The next available <b>BOOST_PP_WHILE</b> iteration. 20 </dd> 21 <dt>x</dt> 22 <dd> 23 The left operand of the comparison. 24 Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>. 25 </dd> 26 <dt>y</dt> 27 <dd> 28 The right operand of the comparison. 29 Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>. 30 </dd> 31 </dl> 32 <h4>Remarks</h4> 33 <div> 34 If <i>x</i> is less than <i>y</i>, this macro expands to <i>1</i>. 35 Otherwise, it expands to <i>0</i>. 36 </div> 37 <h4>See Also</h4> 38 <ul> 39 <li><a href="less.html">BOOST_PP_LESS</a></li> 40 <li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li> 41 </ul> 42 <h4>Requirements</h4> 43 <div> 44 <b>Header:</b> <a href="../headers/comparison/less.html"><boost/preprocessor/comparison/less.hpp></a> 45 </div> 46 <h4>Sample Code</h4> 47<div><pre> 48#include <<a href="../headers/comparison/less.html">boost/preprocessor/comparison/less.hpp</a>> 49#include <<a href="../headers/list/filter.html">boost/preprocessor/list/filter.hpp</a>> 50 51#define LIST (1, (2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>))))) 52 53#define PRED(d, _, num) <a href="less_d.html">BOOST_PP_LESS_D</a>(d, num, 3) 54 55<a href="list_filter.html">BOOST_PP_LIST_FILTER</a>(PRED, nil, LIST) 56 // expands to (1, (2, <a href="nil.html">BOOST_PP_NIL</a>)) 57</pre></div> 58 <hr size="1"> 59 <div style="margin-left: 0px;"> 60 <i>� Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> 61 </br><i>� Copyright Paul Mensonides 2002</i> 62 </div> 63 <div style="margin-left: 0px;"> 64 <p><small>Distributed under the Boost Software License, Version 1.0. (See 65 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or 66 copy at <a href= 67 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> 68 </div> 69</body> 70</html> 71