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| <title>BOOST_PP_ASSERT_MSG</title> |
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| The <b>BOOST_PP_ASSERT_MSG</b> macro conditionally inserts debugging text. |
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| <h4>Usage</h4> |
| <div class="code"> |
| <b>BOOST_PP_ASSERT_MSG</b>(<i>cond</i>, <i>msg</i>) |
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| <h4>Arguments</h4> |
| <dl> |
| <dt>cond</dt> |
| <dd> |
| A condition that determines whether an assertion occurs. |
| Valid values range from <i>0</i> to <b>BOOST_PP_LIMIT_MAG</b>. |
| </dd> |
| <dt>msg</dt> |
| <dd> |
| A message to display if <i>cond</i> evaluates to <i>0</i>. |
| </dd> |
| </dl> |
| <h4>Remarks</h4> |
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| If <i>cond</i> expands to <i>0</i>, this macro expands to <i>msg</i>. |
| Otherwise, it expands to nothing. |
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| <h4>See Also</h4> |
| <ul> |
| <li><a href="assert_msg.html">BOOST_PP_ASSERT_MSG</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/debug/assert.html"><boost/preprocessor/debug/assert.hpp></a> |
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| <h4>Sample Code</h4> |
| <div><pre> |
| #include <<a href="../headers/comparison/equal.html">boost/preprocessor/comparison/equal.hpp</a>> |
| #include <<a href="../headers/debug/assert.html">boost/preprocessor/debug/assert.hpp</a>> |
| |
| // lines are supposed to be counted |
| // in translation phase 1 |
| |
| #line 9 |
| <a href="assert_msg.html">BOOST_PP_ASSERT_MSG</a>( \ |
| BOOST_PP_EQUAL(__LINE__, 9), \ |
| "incorrect line numbering detected" \ |
| ) |
| </pre></div> |
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| <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> |
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