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Added not about VC++ compiler limitation

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Edward Diener
2015-05-29 22:53:01 -04:00
parent b125850bbb
commit fc6229660e
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doc/ref/limit_repeat.html
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<html>
<head>
<title>BOOST_PP_LIMIT_REPEAT</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_LIMIT_REPEAT</b> macro defines the maximum number of repetitions supported by each <b>BOOST_PP_REPEAT</b> dimension.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_LIMIT_REPEAT</b>
</div>
<h4>Remarks</h4>
<div>
This macro current expands to <i>256</i>.
</div>
<h4>Requirements</h4>
<div>
<b>Header:</b> &nbsp;<a href="../headers/config/limits.html">&lt;boost/preprocessor/config/limits.hpp&gt;</a>
</div>
<hr size="1">
<div style="margin-left: 0px;">
<i><EFBFBD> Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
</br><i><EFBFBD> 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>
<head>
<meta content="text/html; charset=windows-1252" http-equiv="content-type">
<title>BOOST_PP_LIMIT_REPEAT</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;"> The <b>BOOST_PP_LIMIT_REPEAT</b> macro
defines the maximum number of repetitions supported by each <b>BOOST_PP_REPEAT</b>
dimension. </div>
<h4>Usage</h4>
<div class="code"> <b>BOOST_PP_LIMIT_REPEAT</b> </div>
<h4>Remarks</h4>
<div> This macro current expands to <i>256</i>.<br>
<br>
NOTE: for the current latest versions of Microsoft's VC++ compiler there
is a nested macro limit of 256. This means in actuality that the number of
repetitions using VC++ is actually less than 256 depending on the
repetition macro being used. For the BOOST_PP_REPEAT macro this limit
appears to be 252 while for the BOOST_PP_ENUM... series of macros this
limit appears to be around 230, before the VC++ compiler gives a "C1009:
compiler limit : macros nested too deeply" error. This is a compiler
limitation of VC++ which may vary depending on the specific repetition
macro being used, and therefore is not a problem the preprocessor library
can solve.</div>
<h4>Requirements</h4>
<div> <b>Header:</b> &nbsp;<a href="../headers/config/limits.html">&lt;boost/preprocessor/config/limits.hpp&gt;</a>
</div>
<hr size="1">
<div style="margin-left: 0px;"> <i><EFBFBD> Copyright <a href="http://www.housemarque.com"
target="_top">Housemarque Oy</a> 2002</i> <br>
<i><EFBFBD> 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>