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Automatic recursion

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[SVN r14100]
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Vesa Karvonen
2002-06-07 13:04:18 +00:00
parent a18d5f79fc
commit 9f9048e805
82 changed files with 971 additions and 869 deletions
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doc/reference/while.htm
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@ -66,13 +66,21 @@ OP(D, ... OP(D, OP(D,STATE) ) ... )
C++ preprocessor.</li>
</ul>
<h3>Automatic recursion?</h3>
<p><a href="while.htm#BOOST_PP_WHILE">BOOST_PP_WHILE</a>() currently does not implement automatic recursion. The reason
for this is that it would lead to very poor performance. The automatic recursion
technique takes O(N) steps just to find out that the Nth recursion should be used.
This would dramatically effect the time complexity of macros using automatic
recursion.</p>
<h3>Note</h3>
<ul>
<li>The value of the D parameter may exceed <a href="limits.htm#BOOST_PP_LIMIT_MAG">BOOST_PP_LIMIT_MAG</a>.</li>
<li>Using <a href="while.htm#BOOST_PP_WHILE">BOOST_PP_WHILE</a>() is a bit tricky. This is due to the C++
preprocessor limitations. It is recommended to take a look at the
implementations of the various PREPROCESSOR library primitives such as
<a href="arithmetic_add.htm#BOOST_PP_ADD">BOOST_PP_ADD</a>() for additional examples.</li>
implementations of the various PREPROCESSOR library primitives
such as <a href="arithmetic_add.htm#BOOST_PP_ADD">BOOST_PP_ADD</a>() for additional examples.</li>
</ul>
<h3>Example</h3>