54 lines
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54 lines
5.4 KiB
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<title>The MPL Reference Manual: BOOST_MPL_LIMIT_UNROLLING</title>
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<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./limit-string-size.html" class="navigation-link">Prev</a> <a href="./broken-compiler-workarounds.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./limit-string-size.html" class="navigation-link">Back</a> Along</span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./configuration.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td>
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<td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./macros.html" class="navigation-link">Macros</a> / <a href="./configuration.html" class="navigation-link">Configuration</a> / <a href="./limit-unrolling.html" class="navigation-link">BOOST_MPL_LIMIT_UNROLLING</a></td>
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</tr></table><div class="header-separator"></div>
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<div class="section" id="boost-mpl-limit-unrolling">
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<h1><a class="toc-backref" href="./configuration.html#id1607">BOOST_MPL_LIMIT_UNROLLING</a></h1>
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<div class="section" id="id1380">
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<h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
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<pre class="literal-block">
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#if !defined(<a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a>)
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# define <a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a> \
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<em>implementation-defined integral constant</em> \
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/**/
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#endif
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</pre>
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</div>
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<div class="section" id="id1381">
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<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
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<p><tt class="literal"><span class="pre"><a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a></span></tt> is an overridable configuration macro regulating
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the unrolling depth of the library's iteration algorithms. In this implementation
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of the library, <tt class="literal"><span class="pre"><a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a></span></tt> has a default value of 4. To
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override the default, define <tt class="literal"><span class="pre"><a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a></span></tt> to the desired
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value before including any library header.
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[<em>Note:</em> Overriding will take effect
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<em>only</em> if the library is configured not to use <a class="reference internal" href="./cfg-no-preprocessed-headers.html#boost-mpl-cfg-no-preprocessed">preprocessed headers</a>. See
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<a class="reference internal" href="./cfg-no-preprocessed-headers.html">BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</a> for more information. — <em>end note</em>]</p>
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</div>
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<div class="section" id="id1382">
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<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
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<p>Except for overall library performace, overriding the
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<tt class="literal"><span class="pre"><a href="./limit-unrolling.html" class="identifier">BOOST_MPL_LIMIT_UNROLLING</a></span></tt>'s default value has no user-observable effects.</p>
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</div>
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<div class="section" id="id1383">
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<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
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<p><a class="reference internal" href="./configuration.html">Configuration</a>, <a class="reference internal" href="./cfg-no-preprocessed-headers.html">BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS</a></p>
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<table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./limit-string-size.html" class="navigation-link">Prev</a> <a href="./broken-compiler-workarounds.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./limit-string-size.html" class="navigation-link">Back</a> Along</span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./configuration.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td>
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<td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body>
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