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+<html>
+<head>
+ <title>BOOST_PP_DEDUCE_Z</title>
+ <link rel="stylesheet" type="text/css" href="../styles.css">
+</head>
+<body>
+ <div style="margin-left: 0px;">
+ The <b>BOOST_PP_DEDUCE_Z</b> macro manually deduces the state of the <b>BOOST_PP_REPEAT</b> construct.
+ </div>
+ <h4>Usage</h4>
+ <div class="code">
+ <b>BOOST_PP_DEDUCE_Z</b>()
+ </div>
+ <h4>Remarks</h4>
+ <div>
+ This macro is intended to avoid the use of <i>automatic-recursion</i> at deep expansion depths.
+ <i>Automatic-recursion</i> at such depths can be inefficient on some preprocessors.
+ It is not intended to be used directly with the invocation of macros with a <b>_Z</b> suffix such as:
+ <div>
+ <b>BOOST_PP_ENUM_PARAMS_Z</b>(<b>BOOST_PP_DEDUCE_Z</b>(), (a, (b, (c, <b>BOOST_PP_NIL</b>))))
+ </div>
+ If it is used in this context, the <b>_Z</b> macro will fail.
+ The <b>_Z</b> macros directly concatenate to the <i>r</i> parameter that is passed to them,
+ which would prevent <b>BOOST_PP_DEDUCE_Z</b>() from expanding.
+ Furthermore, it is pointless to use this macro in a situation such as this
+ because it would already be too late to gain any efficiency.
+ </div>
+ <h4>See Also</h4>
+ <ul>
+ <li><a href="repeat.html">BOOST_PP_REPEAT</a></li>
+ </ul>
+ <h4>Requirements</h4>
+ <div>
+ <b>Header:</b> <a href="../headers/repetition/deduce_z.html"><boost/preprocessor/repetition/deduce_z.hpp></a>
+ </div>
+ <hr size="1">
+ <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>
+ </div>
+</body>
+</html>