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<h3><a href="../../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../../c++boost.gif" border="0"></a></h3>
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<h1 align="center">Boost.Preprocessor</h1>
<h2 align="center">Reference</h2>
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<h1>#include <<a href="../../../../boost/preprocessor/dec.hpp">boost/preprocessor/dec.hpp</a>></h1>
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<h2><a name="BOOST_PP_DEC">#define BOOST_PP_DEC</a>(X)</h2>
<p>Decrements <code>X</code> expanding to a single token.</p>
<p>For example, <code><a href="dec.htm#BOOST_PP_DEC">BOOST_PP_DEC</a>(3)</code> expands to <code>2</code> (a
single token).</p>
<p><a href="dec.htm#BOOST_PP_DEC">BOOST_PP_DEC</a>() uses saturation arithmetic. Decrementing 0 yeilds a 0.</p>
<p>Only decimal integer literals in the range [0,<a href="limits.htm#BOOST_PP_LIMIT_MAG">BOOST_PP_LIMIT_MAG</a>] are
supported.</p>
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<h2><a name="BOOST_PREPROCESSOR_DEC">#define BOOST_PREPROCESSOR_DEC</a>(X)</h2>
<p>Obsolete. Use <a href="dec.htm#BOOST_PP_DEC">BOOST_PP_DEC</a>().</p>
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