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<div><h2 class="title">
<a name="boost_integer"></a>Boost.Integer</h2></div>
<div><div class="authorgroup">
<div class="author"><h3 class="author">
<span class="firstname">Beman</span> <span class="surname">Dawes</span>
</h3></div>
<div class="author"><h3 class="author">
<span class="firstname">Daryle</span> <span class="surname">Walker</span>
</h3></div>
<div class="author"><h3 class="author">
<span class="firstname">Gennaro</span> <span class="surname">Prota</span>
</h3></div>
<div class="author"><h3 class="author">
<span class="firstname">John</span> <span class="surname">Maddock</span>
</h3></div>
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<div><p class="copyright">Copyright &#169; 2001-2009 Beman
      Dawes, Daryle Walker, Gennaro Prota, John Maddock</p></div>
<div><div class="legalnotice">
<a name="boost_integer.legal"></a><p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dt><span class="section"><a href="index.html#boost_integer.overview">Overview</a></span></dt>
<dt><span class="section"><a href="boost_integer/traits.html">Integer Traits</a></span></dt>
<dt><span class="section"><a href="boost_integer/integer.html">Integer Type Selection</a></span></dt>
<dt><span class="section"><a href="boost_integer/gcd_lcm.html">Greatest Common Divisor and Least
    Common Multiple</a></span></dt>
<dt><span class="section"><a href="boost_integer/extended_euclidean.html">Extended Euclidean Algorithm</a></span></dt>
<dt><span class="section"><a href="boost_integer/mod_inverse.html">Modular Multiplicative Inverse</a></span></dt>
<dt><span class="section"><a href="boost_integer/mask.html">Integer Masks</a></span></dt>
<dt><span class="section"><a href="boost_integer/log2.html">Compile Time log2 Calculation</a></span></dt>
<dt><span class="section"><a href="boost_integer/minmax.html">Compile time min/max calculation</a></span></dt>
<dt><span class="section"><a href="boost_integer/history.html">History</a></span></dt>
<dt><span class="section"><a href="boost_integer/cstdint.html">Removed from library: Standard Integer
    Types</a></span></dt>
</dl>
</div>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.overview"></a><a class="link" href="index.html#boost_integer.overview" title="Overview">Overview</a>
</h2></div></div></div>
<p>
      Boost.Integer provides integer type support, particularly helpful in generic
      programming. It provides the means to select an integer type based upon its
      properties, like the number of bits or the maximum supported value, as well
      as compile-time bit mask selection. There is a derivative of std::numeric_limits
      that provides integral constant expressions for <code class="computeroutput"><span class="identifier">min</span></code>
      and <code class="computeroutput"><span class="identifier">max</span></code>. Finally, it provides
      two compile-time algorithms: determining the highest power of two in a compile-time
      value; and computing min and max of constant expressions.
    </p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
              <p>
                Component
              </p>
            </th>
<th>
              <p>
                Header
              </p>
            </th>
<th>
              <p>
                Purpose
              </p>
            </th>
</tr></thead>
<tbody>
<tr>
<td>
              <p>
                Forward Declarations.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer_fwd.hpp" target="_top">&lt;boost/integer_fwd.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Forward declarations of classes and class templates - for use when
                just the name of a class is needed.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/traits.html" title="Integer Traits">Integer Traits</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer_traits.hpp" target="_top">&lt;boost/integer_traits.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Class template <code class="literal">boost::integer_traits</code>, derives
                from <code class="literal">std::numeric_limits</code> and adds <code class="literal">const_min</code>
                and <code class="literal">const_max</code> members.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/integer.html" title="Integer Type Selection">Integer Type Selection</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer.hpp" target="_top">&lt;boost/integer.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Templates for integer type selection based on properties such as
                maximum value or number of bits: Use to select the type of an integer
                when some property such as maximum value or number of bits is known.
                Useful for generic programming.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/gcd_lcm.html" title="Greatest Common Divisor and Least Common Multiple">Greatest Common Divisor and
                Least Common Multiple</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/common_factor_rt.hpp" target="_top">&lt;boost/integer/common_factor_rt.hpp&gt;</a></code>
                and <code class="literal"><a href="../../../../boost/integer/common_factor_ct.hpp" target="_top">&lt;boost/integer/common_factor_ct.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Functions <code class="computeroutput"><span class="identifier">gcd</span></code> and
                <code class="computeroutput"><span class="identifier">lcm</span></code> plus function
                objects and compile time versions.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/mask.html" title="Integer Masks">Integer Masks</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/integer_mask.hpp" target="_top">&lt;boost/integer/integer_mask.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Templates for the selection of integer masks, single or lowest group,
                based on the number of bits: Use to select a particular mask when
                the bit position(s) are based on a compile-time variable. Useful
                for generic programming.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/log2.html" title="Compile Time log2 Calculation">Compile time log2 Calculation</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/static_log2.hpp" target="_top">&lt;boost/integer/static_log2.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Template for finding the highest power of two in a number: Use to
                find the bit-size/range based on a maximum value. Useful for generic
                programming.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/minmax.html" title="Compile time min/max calculation">Compile time min/max calculation</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/static_min_max.hpp" target="_top">&lt;boost/integer/static_min_max.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Templates for finding the extrema of two numbers: Use to find a bound
                based on a minimum or maximum value. Useful for generic programming.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/extended_euclidean.html" title="Extended Euclidean Algorithm">Extended Euclidean
                algorithm</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/extended_euclidean.hpp" target="_top">&lt;boost/integer/extended_euclidean.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Solves <span class="emphasis"><em>mx + ny = gcd(x,y)</em></span> for <span class="emphasis"><em>x</em></span>
                and <span class="emphasis"><em>y</em></span>.
              </p>
            </td>
</tr>
<tr>
<td>
              <p>
                <a class="link" href="boost_integer/mod_inverse.html" title="Modular Multiplicative Inverse">Modular multiplicative
                inverse</a>.
              </p>
            </td>
<td>
              <p>
                <code class="literal"><a href="../../../../boost/integer/mod_inverse.hpp" target="_top">&lt;boost/integer/mod_inverse.hpp&gt;</a></code>
              </p>
            </td>
<td>
              <p>
                Given <span class="emphasis"><em>a</em></span> and <span class="emphasis"><em>m</em></span>, solves
                <span class="emphasis"><em>ax</em></span> = 1 mod <span class="emphasis"><em>m</em></span> for <span class="emphasis"><em>x</em></span>.
              </p>
            </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"><p><small>Last revised: December 10, 2019 at 00:22:42 GMT</small></p></td>
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