projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | <html> |
| 2 | <head> | |
| 3 | <title>BOOST_PP_MOD_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_MOD_D</b> macro expands to the modulus of its second and third arguments. | |
| 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_MOD_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 dividend (numerator) of the operation. | |
| 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 divisor (denominator) of the operation. | |
| 29 | Valid values range from <i>1</i> to <b>BOOST_PP_LIMIT_MAG</b>. | |
| 30 | </dd> | |
| 31 | </dl> | |
| 32 | <h4>Remarks</h4> | |
| 33 | <div> | |
| 34 | If <i>y</i> is <i>0</i>, the result is undefined. | |
| 35 | </div> | |
| 36 | <h4>See Also</h4> | |
| 37 | <ul> | |
| 38 | <li><a href="limit_mag.html">BOOST_PP_LIMIT_MAG</a></li> | |
| 39 | <li><a href="mod.html">BOOST_PP_MOD</a></li> | |
| 40 | </ul> | |
| 41 | <h4>Requirements</h4> | |
| 42 | <div> | |
| 43 | <b>Header:</b> <a href="../headers/arithmetic/div.html"><boost/preprocessor/arithmetic/div.hpp></a> | |
| 44 | </div> | |
| 45 | <h4>Sample Code</h4> | |
| 46 | <div><pre> | |
| 47 | #include <<a href="../headers/arithmetic/mod.html">boost/preprocessor/arithmetic/mod.hpp</a>> | |
| 48 | #include <<a href="../headers/list/filter.html">boost/preprocessor/list/filter.hpp</a>> | |
| 49 | #include <<a href="../headers/logical/not.html">boost/preprocessor/logical/not.hpp</a>> | |
| 50 | ||
| 51 | #define LIST (1, (2, (3, (4, (5, <a href="nil.html">BOOST_PP_NIL</a>))))) | |
| 52 | ||
| 53 | #define EVEN_P(d, _, num) <a href="not.html">BOOST_PP_NOT</a>(<a href="mod_d.html">BOOST_PP_MOD_D</a>(d, num, 2)) | |
| 54 | #define EVEN(list) <a href="list_filter.html">BOOST_PP_LIST_FILTER</a>(EVEN_P, nil, list) | |
| 55 | ||
| 56 | EVEN(LIST) // expands to (2, (4, <a href="nil.html">BOOST_PP_NIL</a>)) | |
| 57 | ||
| 58 | #define ODD_P(d, _, num) <a href="mod_d.html">BOOST_PP_MOD_D</a>(d, num, 2) | |
| 59 | #define ODD(list) <a href="list_filter.html">BOOST_PP_LIST_FILTER</a>(ODD_P, nil, list) | |
| 60 | ||
| 61 | ODD(LIST) // expands to (1, (3, (5, <a href="nil.html">BOOST_PP_NIL</a>))) | |
| 62 | </pre></div> | |
| 63 | <hr size="1"> | |
| 64 | <div style="margin-left: 0px;"> | |
| 65 |