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            <h1><a href="../index.htm"><img id="boost-logo" src=
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            <p id="heading-quote"><span class="quote">&ldquo;...one of the
            most highly regarded and expertly designed C++ library projects
            in the world.&rdquo;</span> <span class="attribution">&mdash;
            <a href="http://www.gotw.ca/">Herb Sutter</a> and <a href=
            "http://en.wikipedia.org/wiki/Andrei_Alexandrescu">Andrei
            Alexandrescu</a>, <a href=
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          <h2>Version History</h2>

          <div class="section" id="history">
            <div class="section-body">
              <div class="section-body-0">
                <div class="section-body-1">
                  <div class="history_item" id="v1.32.0">
                    <h3>1.32.0 (19 Nov 2004)</h3>

                    <h4>Important - New Toolset Names</h4>

                    <p>The names of some the Boost.Build <a href=
                    "getting_started.html#Tools">toolsets</a> have been
                    changed to remove the "<code>.</code>" (dot) character
                    and to fix some other naming inconsistencies. For
                    example, <code>vc7.1</code> toolset was renamed to become
                    <code>vc-7_1</code>. Please refer to the <a href=
                    "getting_started.html#Tools">Supported Toolsets</a>
                    section of the installation guide for the complete list
                    of the current toolset names. This change was made as a
                    part of the effort to make the Boost distribution
                    compatible with ISO 9660 level 2 requirements.</p>

                    <h4>New Libraries</h4>

                    <ul>
                      <li><span class="library"><a href=
                      "../libs/assign/index.html">Assignment
                      Library</a>:</span> Filling containers with constant or
                      generated data has never been easier, from Thorsten
                      Ottosen.</li>

                      <li><span class="library"><a href=
                      "../libs/algorithm/minmax/index.html">Minmax
                      Library</a>:</span> Standard library extensions for
                      simultaneous min/max and min/max element computations,
                      from Herv&eacute; Br&ouml;nnimann.</li>

                      <li><span class="library"><a href=
                      "../libs/multi_index/doc/index.html">Multi-index
                      Containers Library</a>:</span> Containers with multiple
                      STL-compatible access interfaces, from Joaqu&iacute;n M
                      L&oacute;pez Mu&ntilde;oz.</li>

                      <li><span class="library"><a href=
                      "../libs/numeric/conversion/index.html">Numeric
                      Conversion Library</a>:</span> Optimized policy-based
                      numeric conversions, from Fernando Cacciola.</li>

                      <li><span class="library"><a href=
                      "../doc/html/program_options.html">Program Options
                      Library</a>:</span> Access to configuration data given
                      on command line, in config files and other sources,
                      from Vladimir Prus.</li>

                      <li><span class="library"><a href=
                      "../libs/range/index.html">Range Library</a>:</span> a
                      new infrastructure for generic algorithms that builds
                      on top of the new iterator concepts, from Thorsten
                      Ottosen.</li>

                      <li><span class="library"><a href=
                      "../libs/serialization/doc/index.html">Serialization
                      Library</a>:</span> Serialization/de-serialization of
                      arbitrary C++ data structures to various formats
                      including text, binary, and xml, from Robert
                      Ramey.</li>

                      <li><span class="library"><a href=
                      "../libs/algorithm/string/index.html">String Algorithms
                      Library</a>:</span> Collection of string related
                      algorithms for case conversion, trimming, find/replace
                      operations and more, from Pavol Droba.</li>

                      <li><span class="library"><a href=
                      "../doc/html/tribool.html">Tribool</a>:</span> 3-state
                      boolean type library, from Doug Gregor.</li>
                    </ul>

                    <h4>Updated Libraries</h4>

                    <ul>
                      <li>Compose: This deprecated library has been
                      removed.</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/graph/index.html">Graph</a>:</span>

                        <ul>
                          <li>Added <a href=
                          "../libs/graph/doc/bundles.html">bundled
                          properties</a> to the <a href=
                          "../libs/graph/doc/adjacency_list.html"><code>adjacency_list</code></a>
                          and <a href=
                          "../libs/graph/doc/adjacency_matrix.html"><code>adjacency_matrix</code></a>
                          class templates, greatly simplifying the
                          introduction of internal vertex and edge
                          properties.</li>

                          <li>The <a href=
                          "../libs/graph/doc/leda_conversion.html">LEDA graph
                          adaptors</a> have been ported to LEDA 4.5.</li>

                          <li>Added algorithms for <a href=
                          "../libs/graph/doc/betweenness_centrality.html">betweenness
                          centrality</a> and <a href=
                          "../libs/graph/doc/bc_clustering.html">betweenness
                          centrality clustering</a>.</li>

                          <li>Added <a href=
                          "../libs/graph/doc/circle_layout.html">circle
                          layout</a> and <a href=
                          "../libs/graph/doc/kamada_kawai_spring_layout.html">
                          undirected spring layout</a> algorithms.</li>
                        </ul>
                      </li>

                      <li>
                        <span class="library"><a href=
                        "../libs/mpl/doc/index.html">MPL Library</a>:</span>

                        <ul>
                          <li>Updated to use the Boost Software License.</li>

                          <li>New <a href=
                          "../libs/mpl/doc/index.html">documentation</a>,
                          including a complete <a href=
                          "../libs/mpl/doc/refmanual.html">reference
                          manual.</a></li>

                          <li>Major interface changes and improvements, many
                          of which are <em>not</em> backward compatible.
                          Please refer to the <a href=
                          "../libs/mpl/doc/tutorial/changes-in-boost-1-32-0.html">
                          1.32 changelog</a> for the detailed information
                          about upgrading to the new version.</li>
                        </ul>
                      </li>

                      <li>
                        <span class="library"><a href=
                        "../libs/python/doc/index.html">Python
                        Library</a>:</span>

                        <ul>
                          <li>Updated to use the Boost Software License.</li>

                          <li>a new, <a href=
                          "../libs/python/doc/tutorial/doc/html/python/exposing.html#python.class_virtual_functions">
                          better method of wrapping classes with virtual
                          functions</a> has been implemented.</li>

                          <li>Support for the new Python Bool type, thanks to
                          Daniel Holth.</li>

                          <li>Support for upcoming GCC symbol export control
                          features have been folded in, thanks to Niall
                          Douglas.</li>

                          <li>Improved support for
                          <code>std::auto_ptr</code>-like types.</li>

                          <li>Components used by other libraries have been
                          moved out of <code>python/detail</code> and into
                          <code>boost/detail</code> to improve dependency
                          relationships.</li>

                          <li>Miscellaneous bug fixes and compiler
                          workarounds.</li>
                        </ul>
                      </li>

                      <li><span class="library"><a href=
                      "../doc/html/signals.html">Signals Library</a>:</span>
                      Introduced deterministic slot ordering, permitting
                      slots to be connected at the beginning or end of slot
                      groups or the slot list itself. Combiners may safely
                      have state and are accessible from the signal.</li>

                      <li><span class="library"><a href=
                      "../libs/utility/utility.htm">Utility</a>:</span> class
                      template <a href=
                      "../libs/utility/utility.htm#result_of">result_of</a>
                      added.</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/test/index.html">Test Library</a>:</span>

                        <ul>
                          <li>namespace names gets shorten; old one still
                          supported till next release</li>

                          <li>added proper encoding of XML PCDATA</li>

                          <li>support for wide string comparison
                          implemented</li>
                        </ul>For complete list of changes see Test Library
                        <a href=
                        "../libs/test/doc/release_notes.html#v1_32_0">release
                        notes</a>.
                      </li>
                    </ul>

                    <h4>Regression tests</h4>

                    <p>This release has been extensively tested on a variety
                    of different compilers and platforms. It is known to
                    contain no regressions against the previous reference
                    release on the compilers and configurations tested.
                    Please refer to the corresponding <a href=
                    "http://www.meta-comm.com/engineering/boost-regression/1_32_0/index.html">
                    regression reports</a> to see how well your compiler
                    performs on the new Boost codebase.</p>

                    <h4>Acknowledgements</h4>

                    <p><img src=
                    "http://boost.sourceforge.net/photos/aleksey_gurtovoy2.jpg"
                    width="128" height="250" alt=
                    "cartoon portrait of Aleksey" class=
                    "left-inset" /><a href=
                    "../people/aleksey_gurtovoy.htm">Aleksey Gurtovoy</a>
                    managed this release. <a href=
                    "release_procedures.htm">Managing a release</a> at all is
                    an enormous job, and Aleksey always goes beyond merely
                    meeting requirements by insisting on the highest possible
                    quality. The Boost membership owes him a debt of
                    gratitude.</p>

                    <p>This release wouldn't have been possible without the
                    dedicated effort of many, many members of the Boost
                    community who generously contributed their outstanding
                    expertise, time and energy to making it happen. For
                    patches, bug fixes, troubleshooting, expert advice, and
                    prompt responses to the release manager's requests we
                    thank:</p>

                    <p>David Abrahams, Misha Bergal, Jonathan Brandmeyer,
                    Fernando Cacciola, Marshall Clow, Christopher Currie,
                    Pavol Droba, Caleb Epstein, Eric Friedman, Jeff Garland,
                    Michael Glassford, Doug Gregor, Joel de Guzman, Hubert
                    Holin, Jaakko J&auml;rvi, Hartmut Kaiser, Bronek Kozicki,
                    Tarjei Knapstad, Toon Knapen, Aaron W. LaFramboise,
                    Joaqu&iacute;n M L&oacute;pez Mu&ntilde;oz, Christoph
                    Ludwig, John Maddock, Paul Mensonides, Guillaume
                    Melquiond, Thorsten Ottosen, Vladimir Prus, Robert Ramey,
                    Rene Rivera, Gennadiy Rozental, Stefan Slapeta, Jonathan
                    Turkanis, Pavel Vozenilek, Jonathan Wakely, Daryle
                    Walker, Victor A. Wagner Jr. and Martin Wille.</p>

                    <p>Also, our special thanks go to: John Maddock for the
                    managing the effort of converting the majority of the
                    Boost libraries to the <a href="license_info.html">Boost
                    Software License</a>, Eric Niebler and Joel de Guzman for
                    taking on the important job of improving the Boost
                    documentation's look and feel, and last, but not least,
                    to our regression test runners, without whom we simply
                    would never have released: Toon Knapen, Bronek Kozicki,
                    Rene Rivera, Markus Sch&ouml;pflin, Stefan Slapeta,
                    Victor A. Wagner Jr. and Martin Wille.</p>

                    <p>Thank you everybody!</p>
                  </div>

                  <div class="history_item" id="v1.31.0">
                    <h3>1.31.0 (26 Jan 2004)</h3>

                    <h4>New License</h4>

                    <p>A unified <a href="license_info.html">Boost Software
                    License</a> has been developed and will gradually replace
                    the individual licenses for most Boost libraries. The new
                    license offers better legal protection for both users and
                    developers, and should speed user's legal reviews of
                    Boost libraries. Dave Abrahams led the Boost effort to
                    develop better licensing. The legal team was led by
                    <a href=
                    "http://cyber.law.harvard.edu/people/cabell/index.html">Diane
                    Cabell</a>, Director, Clinical Programs, <a href=
                    "http://cyber.law.harvard.edu">Berkman Center for
                    Internet &amp; Society</a>, Harvard Law School. <a href=
                    "http://www.nixonpeabody.com/attorneys_detail1.asp?ID=121">
                    Devin Smith</a>, attorney, <a href=
                    "http://www.nixonpeabody.com/default.asp">Nixon Peabody
                    LLP</a>, wrote the Boost License. Eva Chan, Harvard Law
                    School, contributed analysis of issues and drafts of
                    various legal documents.</p>

                    <p><strong>Note:</strong> Many of the Boost libraries are
                    still using earlier licenses, though all conform to the
                    <a href="lib_guide.htm#license">Boost License
                    Requirements</a>. After this release we will begin an
                    effort to move toward uniform use of the new license.</p>

                    <h4>Build and Installation</h4>

                    <ul>
                      <li>New <a href="getting_started.html">Getting
                      Started</a> procedures ease download and installation,
                      from Rene Rivera and others.</li>

                      <li>Improved support for libraries requiring <a href=
                      "separate_compilation.html">separate compilation</a>,
                      from John Maddock and others.</li>
                    </ul>

                    <h4>New Libraries</h4>

                    <ul>
                      <li><span class="library"><a href=
                      "../libs/utility/enable_if.html">enable_if</a>:</span>
                      Selective inclusion of function template overloads,
                      from Jaakko J&auml;rvi, Jeremiah Willcock, and Andrew
                      Lumsdaine. This is an important new technique which
                      exploits the <em>SFINAE</em>
                      (substitution-failure-is-not-an-error) principle.</li>

                      <li><span class="library"><a href=
                      "../libs/variant/index.html">Variant
                      Library</a>:</span> Safe, generic, stack-based
                      discriminated union container, from Eric Friedman and
                      Itay Maman.</li>
                    </ul>

                    <h4>Updated Libraries</h4>

                    <ul>
                      <li><span class="library"><a href=
                      "../libs/compose/index.htm">Compose</a>:</span> This
                      library has been deprecated and will be removed in a
                      future release. Use <a href=
                      "../libs/bind/bind.html">Bind</a> or <a href=
                      "../libs/lambda/doc/index.html">Lambda</a>
                      instead.</li>

                      <li><span class="library"><a href=
                      "../libs/date_time/doc/index.html">Date Time
                      Library</a>:</span> A whole host of bug fixes, new
                      features, and documentation improvements. See the Date
                      Time Change History for details.</li>

                      <li><span class="library"><a href=
                      "../libs/filesystem/doc/index.htm">Filesystem
                      Library</a>:</span> Several added functions, including
                      improved checking for directory and file name
                      portability.</li>

                      <li><span class="library"><a name="iterators_lib" href=
                      "../libs/iterator/doc/index.html" id=
                      "iterators_lib">Iterator Library</a>:</span> Major
                      version upgrade, with interface as proposed for the C++
                      library TR, including an improved
                      <code>iterator_adaptor</code> design plus several new
                      components, from David Abrahams, Jeremy Siek, and
                      Thomas Witt.</li>

                      <li><span class="library"><a href=
                      "../libs/multi_array/index.html">MultiArray</a>:</span>
                      The <code>multi_array</code> class template now
                      provides an element-preserving resize operation as well
                      as default construction (see the <a href=
                      "../libs/multi_array/doc/reference.html">reference
                      manual</a> for more information).</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/python/index.html">Python
                        Library</a>:</span>

                        <ul>
                          <li>Support for Python 2.3 and Intel C++ on
                          Linux</li>

                          <li>Container <a href=
                          "../libs/python/doc/v2/indexing.html">Indexing
                          Suite</a> added.</li>

                          <li>injected constructors and wrapped function
                          objects.</li>

                          <li>wrapping static data members.</li>

                          <li><code>std::wstring</code> conversions.</li>

                          <li>Improved <a href=
                          "../libs/python/doc/v2/args.html">keyword
                          arguments</a>.</li>

                          <li>Better error messages, including name
                          demangling for GCC.</li>

                          <li>Simpler <a href=
                          "../libs/python/doc/building.html">build
                          procedure</a>.</li>

                          <li><i>...and more....</i></li>
                        </ul>
                      </li>

                      <li><span class="library"><a href=
                      "../libs/random/index.html">Random Number
                      Library</a>:</span> Interface changed to match the C++
                      <a href="../libs/random/wg21-proposal.html">TR
                      proposal</a>, from Jens Maurer.</li>

                      <li><span class="library"><a href=
                      "../libs/regex/doc/index.html">Regex</a>:</span>
                      Completely new matching algorithm is now much faster
                      than before, plus a selection of <a href=
                      "../libs/regex/doc/history.html">new features and
                      enhancements</a>.</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/spirit/index.html">Boost.Spirit
                        1.8.0</a>:</span>

                        <ul>
                          <li>Multiple grammar start rules</li>

                          <li>Multiple Scanner rules (no more scanner
                          business woes)</li>

                          <li>More dynamic parsers</li>

                          <li>Predefined actors</li>

                          <li>Numerous bug fixes and QOI stuff</li>

                          <li><i>...and more...</i></li>
                        </ul>

                        <p>Starting from Spirit v1.8.0, ill conforming
                        compilers will no longer be supported. If you are
                        still using one of these older compilers, please use
                        Spirit v1.6.x. See <a href=
                        "http://spirit.sf.net">Spirit's Site</a> for more
                        details.</p>
                      </li>

                      <li>
                        <span class="library"><a href=
                        "../libs/test/index.html">Test Library</a>:</span>

                        <ul>
                          <li>Free function template based test case</li>

                          <li>Custom exception translators support in
                          execution monitor and register_exception_translator
                          added for unit test framework</li>

                          <li>Added support for multi-module unit tests in
                          automatic registration facility</li>

                          <li>Floating point comparison algorithm reworked
                          (Is not backward compatible!!!)</li>

                          <li>Added support for custom users predicate
                          returning both boolean result code and possibly
                          error message</li>

                          <li>Documentation structure rework and update</li>
                        </ul>

                        <p>For a complete list of changes see the Test
                        Library <a href=
                        "../libs/test/doc/release_notes.html#v1_31_0">release
                        notes</a>.</p>
                      </li>
                    </ul>

                    <h4>Miscellaneous</h4>

                    <ul>
                      <li>Expanded testing and fixes for non-conforming
                      compilers.</li>

                      <li>Web site hosting now provided by <a href=
                      "http://www.sourceforge.net/">SourceForge</a>.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.30.2">
                    <h3>1.30.2 (19 Aug 2003)</h3>

                    <ul>
                      <li><a href="http://www.boost-consulting.com">Boost
                      Consulting</a> is now hosting Boost CVS mirrors - see
                      our <a href="getting_started.html#CVS">download
                      page</a>.</li>

                      <li>Backported changes to the <a href=
                      "../libs/config/config.htm">config system</a>, to
                      better handle new compiler releases.</li>

                      <li>Bugs in regression reporting in subproject tests
                      were fixed.</li>

                      <li>Tests are now run in the context of the user's PATH
                      environment settings</li>

                      <li><a href=
                      "../tools/build/v1/msvc-stlport-tools.html">msvc-stlport</a>
                      and <a href=
                      "../tools/build/v1/intel-win32-tools.html">intel-win32-stlport</a>
                      toolsets now build static libraries with multithreading
                      enabled, to be compatible with the STLPort builds.</li>

                      <li><a href=
                      "../tools/build/v1/intel-win32-tools.html">intel-win32</a>
                      toolset now handles <code>wchar_t</code> correctly when
                      intel is installed over msvc6.</li>

                      <li>Backported fixes from the main trunk which prevent
                      errors building the <a href=
                      "../libs/test/doc/index.html">Boost.Test</a> library in
                      its default configuration.</li>

                      <li>Backported portability improvements for <a href=
                      "../libs/utility/checked_delete.html">checked_delete</a>.</li>

                      <li>Locale support for metrowerks (requiring a
                      statically-linked runtime) is more uniformly
                      handled.</li>

                      <li>Backported <a href=
                      "../libs/conversion/lexical_cast.htm">conversion/lexical_cast</a>'s
                      <code>wchar_t</code> fixes from the main trunk.</li>

                      <li><a href=
                      "../tools/build/v1/intel-linux-tools.html">intel-linux-tools</a>:
                      added <code>rt</code> to FINDLIBS in order to make the
                      <code>clock_gettime()</code> function available
                      (backport of a patch in CVS HEAD).</li>

                      <li><a href=
                      "../tools/regression/index.htm">regression/compiler_status.cpp</a>:
                      backported fixes in error log links generation.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.30.1">
                    <h3>1.30.1 (4 Aug 2003; withdrawn 12 Aug 2003)</h3>

                    <p>Fixes were made to the following libraries:</p>

                    <ul>
                      <li><span class="library">The <a href=
                      "../libs/lambda/doc/index.html">Boost.Lambda</a></span>
                      ..library is now usable with gcc-2.95.2</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/spirit/index.html">Boost.Spirit</a>:</span>

                        <ul>
                          <li>Fixed. Using MSVC++6 (SP5), calling the assign
                          action with a string value on parsers using the
                          file_iterator will not work.</li>

                          <li>Fixed: using assign semantic action in a
                          grammar with a multi_pass iterator adaptor applied
                          to an std::istream_iterator resulted in a failure
                          to compile under msvc 7.0.</li>

                          <li>Fixed: There is a bug in the
                          <code>range_run&lt;CharT&gt;::set(range&lt;CharT&gt;
                          const&amp; r)</code> function in
                          "../boost/spirit/utility/impl/chset/range_run.ipp".</li>

                          <li>Fixed: handling of trailing whitespace bug
                          (ast_parse/pt_parse related)</li>

                          <li>Fixed: comment_p and end of data bug</li>

                          <li>Fixed: Most trailing space bug</li>

                          <li>Fixed: <code>chset&lt;&gt;::operator
                          ~(range&lt;&gt;)</code> bug, <code>operator
                          &amp;(chset&lt;&gt;, range&lt;&gt;)</code> bug,
                          <code>operator &amp;(range&lt;&gt;,
                          chset&lt;&gt;)</code> bug</li>

                          <li>Fixed: <code>impl::detach_clear</code> bug</li>

                          <li>Fixed: mismatch closure return type bug</li>

                          <li>Fixed: <code>access_node_d[]</code> and
                          <code>access_match_d[]</code> iterator bugs</li>

                          <li>Fixed a bug regarding thread safety of
                          Phoenix/Spirit closures.</li>
                        </ul>
                      </li>

                      <li><span class="library">The Boost Template <a href=
                      "../libs/mpl/doc/index.html">Metaprogramming Library
                      (MPL)</a>'s</span> ..typeof implementation is now
                      compatible with Metrowerks CodeWarrior Pro8.</li>

                      <li><span class="library"><a href=
                      "../libs/function/index.html">Boost.Function</a>:</span>
                      workaround for the new Borland patch (version 0x564)
                      and MSVC++ .NET 2003.</li>

                      <li><span class="library"><a href=
                      "../libs/config/index.html">Boost.Config</a>, <a href=
                      "../libs/format/doc/format.html">Boost.Format</a>, and
                      <a href=
                      "../libs/regex/index.html">Boost.Regex</a></span>
                      ..have been adjusted to avoid warnings with GCC-3.3,
                      and Boost.Format also now works with string types other
                      than <code>std::string</code>.</li>

                      <li>
                        <span class="library"><a href=
                        "../libs/smart_ptr/index.html">Smart
                        Pointers</a>:</span>

                        <ul>
                          <li><code>checked_delete</code> now works on more
                          platforms</li>

                          <li>Compatibility with the SunPro compiler</li>

                          <li>Added missing <code>#include</code>s.</li>
                        </ul>
                      </li>

                      <li>
                        <span class="library"><a href=
                        "../libs/python/index.html">Boost.Python</a>:</span>

                        <ul>
                          <li>warning suppression for finicky compilers</li>

                          <li>fixed a crashing bug in the
                          <code>raw_function</code> facility when no keyword
                          arguments were passed.</li>

                          <li>Improved conversion of NULL
                          <code>shared_ptr</code>s to Python.</li>
                        </ul>
                      </li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.30.0">
                    <h3>1.30.0 (19 Mar 2003)</h3>

                    <ul>
                      <li><a href=
                      "../libs/filesystem/doc/index.htm">Filesystem
                      Library</a> added - Portable paths, iteration over
                      directories, and other useful filesystem operations,
                      from Beman Dawes.</li>

                      <li><a href=
                      "../libs/optional/doc/optional.html">Optional
                      Library</a> added - A discriminated-union wrapper for
                      optional values, from Fernando Cacciola.</li>

                      <li><a href=
                      "../libs/numeric/interval/doc/interval.htm">Interval
                      Library</a> added - Extends the usual arithmetic
                      functions to mathematical intervals, from Guillaume
                      Melquiond, Herv&eacute; Br&ouml;nnimann and Sylvain
                      Pion.</li>

                      <li><a href="../libs/mpl/doc/index.html">MPL</a> added
                      - Template metaprogramming framework of compile-time
                      algorithms, sequences and metafunction classes, from
                      Aleksey Gurtovoy.</li>

                      <li><a href="../libs/spirit/index.html">Spirit
                      Library</a> added - An LL (unlimited lookahead) parser
                      framework that represents parsers directly as EBNF
                      grammars in inlined C++ source code, complete with
                      semantic actions, ASTs and much more, from Joel de
                      Guzman and team.</li>

                      <li><a href="../libs/smart_ptr/index.html">Smart
                      Pointers Library</a> - cast functions are now spelled
                      <a href=
                      "../libs/smart_ptr/shared_ptr.htm#static_pointer_cast">static_pointer_cast</a>
                      / <a href=
                      "../libs/smart_ptr/shared_ptr.htm#dynamic_pointer_cast">
                      dynamic_pointer_cast</a>; <a href=
                      "../libs/smart_ptr/enable_shared_from_this.html">enable_shared_from_this</a>
                      added; shared_ptr::shared_ptr(), shared_ptr::reset(),
                      weak_ptr::weak_ptr(), weak_ptr::reset() no longer
                      throw; <a href=
                      "../libs/smart_ptr/shared_ptr.htm#get_deleter">get_deleter</a>
                      added; weak_ptr::get() removed; make_shared is now
                      spelled <a href=
                      "../libs/smart_ptr/weak_ptr.htm#lock">weak_ptr::lock()</a>
                      ; <a href=
                      "../libs/smart_ptr/intrusive_ptr.html">intrusive_ptr
                      documentation</a> added; some experimental undocumented
                      shared_ptr features have been removed; a <a href=
                      "../libs/smart_ptr/sp_techniques.html">page describing
                      some smart pointer programming techniques</a> has been
                      added.</li>

                      <li><a href=
                      "../libs/utility/assert.html">boost/assert.hpp</a>,
                      <a href=
                      "../libs/utility/current_function.html">boost/current_function.hpp</a>,
                      <a href=
                      "../libs/utility/throw_exception.html">boost/throw_exception.hpp</a>,
                      <a href=
                      "../libs/utility/checked_delete.html">boost/checked_delete.hpp</a>
                      have been documented.</li>

                      <li><a href=
                      "../libs/date_time/doc/index.html">Date-Time
                      Library</a> - several fixes and small additions
                      including an interface change to partial_date. See the
                      Date-Time Change History for more details.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a> - added support for assignment to zero (to
                      clear) and comparison against zero (to check if
                      empty).</li>

                      <li><a href=
                      "../libs/utility/operators.htm#symmetry">Operators
                      Library</a> - now takes advantage of named return value
                      optimization (NRVO) when available, from Daniel
                      Frey.</li>

                      <li><a href="../status/compiler_status.html">Regression
                      Tests</a> - Much expanded, plus a very nice <a href=
                      "http://boost.sourceforge.net/regression-logs/">summary
                      page</a> from Rene Rivera.</li>

                      <li>
                        <a href="../libs/test/index.html">Test Library</a> -
                        introduced following new facilities:

                        <ul>
                          <li>Automatic registration of unit tests</li>

                          <li>XML log format</li>

                          <li>XML report format</li>

                          <li>BOOST_CHECK_NO_THROW test tool</li>

                          <li>BOOST_BITWISE_CHECK test tool</li>
                        </ul>

                        <p>For a complete list of changes see the Test
                        Library <a href=
                        "../libs/test/doc/release_notes.html#v1_30_0">release
                        notes</a>.</p>
                      </li>

                      <li>Many fixes and enhancements to other
                      libraries.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.29.0">
                    <h3>1.29.0 (10 Oct 2002)</h3>

                    <ul>
                      <li><a href=
                      "../libs/date_time/doc/index.html">Date-Time
                      Library</a> added - Dates, times, leap seconds,
                      infinity, and more, from Jeff Garland.</li>

                      <li><a href=
                      "../libs/dynamic_bitset/dynamic_bitset.html">Dynamic
                      Bitset</a> added - A runtime sized version of the
                      <code>std::bitset</code> class from Jeremy Siek and
                      Chuck Allison.</li>

                      <li><a href="../libs/format/index.html">Format
                      Library</a> added - Type-safe 'printf-like' format
                      operations, from Samuel Krempp.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a>: Major syntactic changes have been made.
                      Some old syntax and little-used features have been
                      deprecated (and will be removed shortly), and the
                      syntax for the <code>boost::function</code> class
                      template has been greatly improved on conforming
                      compilers. Please see the compatibility note for more
                      information.</li>

                      <li><a href=
                      "../libs/multi_array/doc/index.html">Multi-array
                      Library</a> added - Multidimensional containers and
                      adaptors for arrays of contiguous data, from Ron
                      Garcia.</li>

                      <li><a href=
                      "../libs/preprocessor/index.html">Preprocessor
                      Library</a>: Major upgrade, from Paul Mensonides.</li>

                      <li><a href="../libs/python/doc/index.html">Python
                      Library</a> - Version 2 is released, from Dave Abrahams
                      and others. This is a major rewrite which works on many
                      more compilers and platforms, with a completely new
                      interface and lots of new features. Boost.Python v2
                      requires Python 2.2 or later.</li>

                      <li><a href="../libs/signals/doc/index.html">Signals
                      Library</a> added - Managed signals &amp; slots
                      callback implementation, from Doug Gregor.</li>

                      <li><a href="../libs/test/doc/index.html">Test
                      Library</a>: Major new version, including full unit
                      test capabilities, from Gennadiy Rozental.</li>

                      <li><a href="../libs/numeric/ublas/doc/index.htm">uBLAS
                      Library</a> added - Basic linear algebra for dense,
                      packed and sparse matrices, from Joerg Walter and
                      Mathias Koch.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.28.0">
                    <h3>1.28.0 (15 May 2002)</h3>

                    <ul>
                      <li>The Boost mailing lists are now also accessible as
                      <a href=
                      "mailing_lists.htm#newsgroup">newsgroups</a>.</li>

                      <li>A powerful <a href=
                      "http://aspn.activestate.com/ASPN/Mail/Archives/boost/">
                      mailing list archive</a> has been contributed by the
                      <a href="http://aspn.activestate.com/ASPN">ActiveState
                      Programmer Network</a>.</li>

                      <li>
                        <a href="../libs/lambda/doc/index.html">Lambda
                        Library</a> added, from Jaakko J&auml;rvi and Gary
                        Powell. Define small unnamed function objects at the
                        actual call site:

                        <blockquote>
                          <p><code>for_each( a.begin(), a.end(), std::cout
                          &lt;&lt; _1 &lt;&lt; ' ' );</code></p>
                        </blockquote>
                      </li>

                      <li><a href="../libs/io/doc/ios_state.html">I/O State
                      Saver Library added</a> - Save I/O state to prevent
                      jumbled data, from Daryle Walker.</li>

                      <li><a href="../libs/config/config.htm">Configuration
                      Library</a>: User code should not use
                      BOOST_NO_LIMITS.</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: Avoid compiler warnings.</li>

                      <li><a href="../libs/smart_ptr/index.html">Smart
                      Pointers Library</a>: Added shared_polymorphic_cast and
                      shared_polymorphic_downcast.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a>: Now supports function objects with the
                      unary <code>&amp;</code> operator overloaded.</li>

                      <li><a href="../libs/utility/utility.htm">Utility
                      Library</a>: Added <code>addressof()</code>
                      function.</li>

                      <li>The usual small fixes and tweaks.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.27.0">
                    <h3>1.27.0 (5 Feb 2002)</h3>

                    <ul>
                      <li><a href="../libs/python/doc/index.html">Python
                      Library</a>: Scott Snyder contributed inplace operator
                      support.</li>

                      <li><a href="../libs/integer/index.html">Integer
                      Library</a>: Daryle Walker contributed enhancements to
                      the <a href="../libs/integer/integer.htm">type
                      selection templates</a>, and added new compile-time
                      <a href="../libs/integer/doc/integer_mask.html">bit
                      mask</a>, <a href=
                      "../libs/integer/doc/static_log2.html">binary
                      logarithm</a>, and <a href=
                      "../libs/integer/doc/static_min_max.html">extrema</a>
                      templates.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a>: user may request that
                      <code>boost::function</code> objects store a reference
                      to a function object target instead of a copy, using
                      <a href="../libs/bind/ref.html"><code>ref</code></a>.
                      Stateless objects are optimized so that they require no
                      dynamic storage.</li>

                      <li><a href=
                      "../libs/math/quaternion/index.html">Quaternions</a>:
                      added support for GCC 2.95.x.</li>

                      <li><a href=
                      "../libs/math/octonion/index.html">Octonions</a>: added
                      support for GCC 2.95.x.</li>

                      <li><a href="../libs/smart_ptr/index.html">Smart
                      Pointers Library</a>: Peter Dimov contributed a new
                      implementation that fixes some bugs and adds some
                      features including <a href=
                      "../libs/smart_ptr/compatibility.htm#threadsafe">thread
                      safety</a> when manipulating the use count, <a href=
                      "../libs/smart_ptr/shared_ptr.htm#constructors">custom
                      delete functions</a>, a new <a href=
                      "../libs/smart_ptr/weak_ptr.htm">weak_ptr</a>, and
                      shared_static_cast and shared_dynamic_cast.</li>

                      <li><a href=
                      "../libs/preprocessor/doc/index.html">Preprocessor
                      Library</a>: changed macro prefix from
                      BOOST_PREPROCESSOR to BOOST_PP, added support for list
                      data structure manipulation, added examples, made
                      library ANSI C friendly, added generalized <a href=
                      "../libs/preprocessor/doc/ref/for.html">repetition</a>
                      and <a href=
                      "../libs/preprocessor/doc/ref/while.html">iteration</a>
                      primitives, improved reference manual.</li>

                      <li><a href="../libs/thread/doc/index.html">Threads
                      Library:</a> Mac Carbon implementation contributed by
                      Mac Murrett.</li>

                      <li>Minor fixes to many libraries.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.26.0">
                    <h3>1.26.0 (30 Nov 2001)</h3>

                    <ul>
                      <li><a href=
                      "../libs/math/doc/common_factor.html">Common Factor
                      Library</a> added. Greatest common divisor and least
                      common multiple, from Daryle Walker.</li>

                      <li><a href=
                      "../libs/preprocessor/doc/index.html">Preprocessor
                      Library</a> added. Preprocessor metaprogramming tools
                      including repetition and recursion, from Vesa
                      Karvonen.</li>

                      <li><a href=
                      "../libs/utility/iterator_adaptors.htm">Iterator
                      Adaptor Library</a>: Added <a href=
                      "../libs/utility/generator_iterator.htm">generator
                      iterator</a> adaptor, from Jens Maurer.</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: Removed iterator interface. Fixed
                      overflows in uniform_int&lt;&gt;. Both changes cause
                      random number sequences to differ compared to previous
                      boost releases.</li>

                      <li><a href=
                      "../libs/utility/operators.htm">operators.hpp</a>:
                      Improvements from Daryle and Helmut Ziesel</li>

                      <li><a href=
                      "../tools/build/index.html">Boost.Build:</a> Continuing
                      improvements, including pre-built <a href=
                      "../tools/build/index.html">Boost.Jam
                      executables</a>.</li>

                      <li>Minor fixes to a number of other libraries.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.25.1">
                    <h3>1.25.1 (5 Nov 2001)</h3>

                    <ul>
                      <li><a href="../tools/build/index.html">Boost Build
                      System</a>: Continued improvements.</li>

                      <li><a href="../libs/config/config.htm">Config
                      Library</a>: Continued refinements.</li>

                      <li><a href="../libs/graph/doc/index.html">Graph
                      Library</a>: Final cleanup for upcoming the Boost Graph
                      Library book.</li>

                      <li><a href="../libs/thread/doc/index.html">Thread
                      Library</a>: Minor fixes - tests now pass on most Win32
                      and POSIX systems including Linux and Solaris.
                      Semaphore removed as too error prone.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a>: direct support for member function
                      pointers and documentation updates.</li>

                      <li><a href=
                      "http://groups.yahoo.com/group/Boost-Users">Boost-Users</a>
                      mailing list has been created to address topics of
                      interest to users of Boost libraries.</li>

                      <li><a href=
                      "http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl">
                      Boost Wiki web</a> added. Provides a place for Boost
                      users to openly discuss and document the use of Boost
                      libraries. It is not officially maintained by Boost
                      developers.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.25.0">
                    <h3>1.25.0 (1 Oct 2001)</h3>

                    <ul>
                      <li><a href="../libs/thread/doc/index.html">Thread
                      Library</a> added. Portable C++ multi-programming at
                      last, from William Kempf.</li>

                      <li><a href=
                      "../libs/utility/base_from_member.html">Base From
                      Member</a> added to <a href=
                      "../libs/utility/utility.htm">Utility Library</a>.
                      Support for the base from member idiom, from Daryle
                      Walker.</li>

                      <li><a href="../libs/bind/bind.html">Bind</a> and
                      <a href="../libs/bind/mem_fn.html">mem_fn</a> added -
                      Generalized binders for function/object/pointers and
                      member functions, from Peter Dimov.</li>

                      <li><a href="../libs/array/index.html">Array
                      Library</a>: Minor updates, from Nico Josuttis.</li>

                      <li><a href="../libs/config/config.htm">Config
                      Library</a>: major redesign with much improved and
                      automated configuration of Boost libraries for specific
                      compilers, from John Maddock.</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: Fixed bug when copying normal_distribution
                      and improved the documentation, from Michael Stevens
                      and Jens Maurer.</li>

                      <li><a href=
                      "../libs/math/special_functions/index.html">Special
                      functions</a>, <a href=
                      "../libs/math/octonion/index.html">octonions</a>,
                      <a href=
                      "../libs/math/quaternion/index.html">quaternions</a>
                      updated, now useable with many more compilers, plus
                      three new special functions, from Hubert Holin, Eric
                      Ford, and others.</li>

                      <li><a href="../libs/tokenizer/index.html">Tokenizer
                      Library</a>: fixes/enhancements to
                      escaped_list_separator based on empty fields and tokens
                      comments from Johan Nillson and Jens Maurer.</li>

                      <li>Coming Soon - A mailing list for Boost users!</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.24.0">
                    <h3>1.24.0 (19 Aug 2001)</h3>

                    <ul>
                      <li><a href=
                      "../libs/tuple/doc/tuple_users_guide.html">Tuple
                      Library</a> added. Tuples ease definition of functions
                      returning multiple values, and more, from Jaakko
                      J&auml;rvi.</li>

                      <li>Minor fixes to some other libraries.</li>

                      <li><a href="../tools/build/index.html">Boost Build
                      System</a> added. Preliminary release of an innovative
                      build system for Boost libraries, from Dave Abrahams
                      and others.</li>

                      <li><a href="formal_review_schedule.html">Formal Review
                      Schedule</a> added. Shows current, future, and recent
                      past review dates.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.23.0">
                    <h3>1.23.0 (6 Jul 2001)</h3>

                    <ul>
                      <li><a href="../libs/any/index.html">Any Library</a>
                      added. Safe, generic container for single values of
                      different value types, from Kevlin Henney.</li>

                      <li><a href="../libs/function/index.html">Function
                      Library</a> added. Function object wrappers for
                      deferred calls or callbacks, from Doug Gregor.</li>

                      <li><a href="../libs/tokenizer/index.html">Tokenizer
                      Library</a> added. Break a string into a series of
                      tokens, from John Bandela.</li>

                      <li><a href=
                      "../libs/math/special_functions/index.html">Special
                      functions</a>, <a href=
                      "../libs/math/octonion/index.html">octonions</a>,
                      <a href=
                      "../libs/math/quaternion/index.html">quaternions</a>
                      added, from Hubert Holin.</li>

                      <li><a href="../libs/smart_ptr/smart_ptr.htm">Smart
                      Pointer Library</a>: shared_ptr polymorphic pointers
                      now work on more broken compilers.</li>

                      <li>IBM/Aix Compiler status table contributed by Toon
                      Knapen.</li>

                      <li>Minor fixes to a number of other libraries.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.22.0">
                    <h3>1.22.0 (25 May 2001)</h3>

                    <ul>
                      <li><a href="../libs/crc/index.html">CRC Library</a>
                      added. Compute cyclic redundancy codes from Daryle
                      Walker.</li>

                      <li><a href="../libs/graph/doc/index.html">Graph
                      Library</a>: Minor fixes.</li>

                      <li><a href=
                      "../libs/integer/integer_traits.html">Integer
                      Traits</a>: added wchar_t specialization, minor
                      portability fixes.</li>

                      <li><a href="../libs/regex/index.html">Regex
                      Library</a>: Minor portability fixes.</li>

                      <li><a href="../libs/smart_ptr/smart_ptr.htm">Smart
                      Pointer Library</a>: fixed bugs, tightened
                      requirements, added examples.</li>

                      <li><a href="../libs/utility/utility.htm">Utility
                      Library</a>: added checked_delete() and
                      checked_array_delete() functions.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.21.2">
                    <h3>1.21.2 (24 Apr 2001)</h3>

                    <ul>
                      <li><a href=
                      "../libs/compatibility/index.html">Compatibility
                      Library</a> added: Help for non-conforming standard
                      libraries missing CXX headers from Ralf
                      Grosse-Kunstleve, and help for missing standard library
                      &lt;limits&gt; header from Jens Maurer. (These are
                      unreviewed implementation libraries, treated as
                      maintenance steps only.)</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: Split into separate headers, updated
                      documentation, added lagged_fibonacci generator.</li>

                      <li><a href="../libs/integer/index.html">Integer
                      Library</a>: Minor portability update.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a>: Changed algorithm interfaces to use named
                      parameters technique. Added graph isomorphism
                      algorithm.</li>

                      <li>Download refinements - files now available from
                      either FTP or web server.</li>

                      <li><a href=
                      "http://sourceforge.net/tracker/?group_id=7586">Tracker</a>
                      Added: View and submit bug, support, and feature
                      requests.</li>

                      <li>Minor portability fixes in several other
                      libraries.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.21.1">
                    <h3>1.21.1 (14 Mar 2001)</h3>

                    <ul>
                      <li>New download page. The .zip and .tar.gz files now
                      live on the SourceForge ftp site.</li>

                      <li><a href="../libs/graph/doc/index.html">Graph
                      Library</a>: Minor docs fixes.</li>

                      <li><a href="../libs/python/doc/index.html">Python
                      Library</a>: Minor docs fixes.</li>

                      <li><a href="../libs/regex/index.html">Regex
                      Library</a>: Minor portability fixes.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.21.0">
                    <h3>1.21.0 (9 Mar 2001)</h3>

                    <ul>
                      <li><a href=
                      "../libs/utility/iterator_adaptors.htm">Iterator
                      Adaptor Library</a> added. Adapt a base type into a
                      standard conforming iterator, and more, from Dave
                      Abrahams, Jeremy Siek, and John Potter.</li>

                      <li><a href="../libs/pool/doc/index.html">Pool
                      Library</a> added. Memory pool management from Steve
                      Cleary.</li>

                      <li><a href="../libs/test/doc/index.html">Test
                      Library</a> added. Support for program testing and
                      execution from Beman Dawes.</li>

                      <li><a href="generic_programming.html">Generic
                      Programming Techniques</a> page added, contributed by
                      Dave Abrahams.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a>: Updated use of iterator adaptors. Changed
                      <code>operator ==</code> for
                      <code>adjacency_list::edge_descriptor</code> to improve
                      semantics for multigraphs. Moved
                      <code>adjacency_iterator_generator</code> from
                      namespace <code>detail</code> to <code>boost</code> and
                      added <a href=
                      "../libs/graph/doc/adjacency_iterator.html">documentation</a>.
                      Renamed <code>dynamic_components()</code> to <a href=
                      "../libs/graph/doc/incremental_components.html"><code>incremental_components()</code></a>,
                      better matching graph literature terminology. Cleaned
                      up interface of <a href=
                      "../libs/graph/doc/connected_components.html"><code>connected_components()</code></a>
                      and created separate <a href=
                      "../libs/graph/doc/strong_components.html"><code>strong_components()</code></a>
                      function using Tarjan's more efficient algorithm. Fixed
                      documentation figures for <a href=
                      "../libs/graph/doc/adjacency_list.html"><code>adjacency_list</code></a>
                      and <a href=
                      "../libs/graph/doc/adjacency_matrix.html"><code>adjacency_matrix</code></a>.
                      Added docs for <a href=
                      "../libs/graph/doc/cuthill_mckee_ordering.html"><code>cuthill_mckee_ordering()</code></a>
                      algorithm.</li>

                      <li><a href="../libs/python/doc/index.html">Python
                      Library</a> upgraded. Better compatibility with Python
                      2.0, NULL pointers and smart-pointers get converted
                      to/from python None, massive documentation
                      review/revision.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a>: Minor fixes for Unicode
                      platforms.</li>

                      <li><a href="../libs/type_traits/index.html">Type
                      Traits Library</a> upgraded: Major revision.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.20.2">
                    <h3>1.20.2 (10 Feb 2001)</h3>

                    <ul>
                      <li>Array traits: minor portability fix.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> - Changes to <a href=
                      "../libs/graph/doc/breadth_first_search.html"><code>breadth_first_search()</code></a>
                      re: <a href=
                      "../libs/graph/doc/BFSVisitor.html">BFSVisitor</a>,
                      added max flow algorithms <a href=
                      "../libs/graph/doc/edmunds_karp_max_flow.html"><code>edmunds_karp_max_flow()</code></a>
                      and <a href=
                      "../libs/graph/doc/push_relabel_max_flow.html"><code>push_relabel_max_flow()</code></a>,
                      added <a href=
                      "../libs/graph/doc/adjacency_matrix.html"><code>adjacency_matrix</code></a>
                      graph class, added <a href=
                      "../libs/graph/doc/filtered_graph.html"><code>filtered_graph</code></a>
                      adaptor</li>

                      <li><a href="../libs/integer/index.html">Integer
                      Library:</a> minor fixes to integer.hpp and
                      integer_test.cpp</li>

                      <li><a href="microsoft_vcpp.html">Portability Hints:
                      Microsoft Visual C++</a> added.</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: Minor portability fixes</li>

                      <li><a href="../libs/rational/index.html">Rational
                      Number Library</a>: documentation updates, efficiency
                      improvements, co-operates with user-defined types,
                      regression tests</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a>: minor updates.</li>

                      <li><a href="../libs/smart_ptr/index.html">Smart
                      Pointer Library</a>: shared_ptr example added.</li>

                      <li><a href="../libs/timer/index.html">Timer
                      Library</a>: changed to an all inline
                      implementation.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.20.1">
                    <h3>1.20.1 (10 Jan 2001)</h3>

                    <ul>
                      <li><a href=
                      "../boost/compressed_pair.hpp">compressed_pair.hpp</a>
                      minor update fixes test failures of other libraries
                      under VC++.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> minor updates.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a> minor updates.</li>

                      <li>Minor website fixes including missing files in
                      boost_all.zip.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.20.0">
                    <h3>1.20.0 (6 Jan 2001)</h3>

                    <ul>
                      <li><a href="../libs/conversion/index.html">Conversion
                      Library</a> added - <a href=
                      "../libs/conversion/cast.htm">cast</a> and <a href=
                      "../libs/conversion/lexical_cast.htm">lexical_cast</a>
                      headers from Dave Abrahams and Kevlin Henney.</li>

                      <li>Web site moved to a larger host after the old ISP
                      collapsed unexpectedly.</li>

                      <li>Regression tests now include execution testing. See
                      <a href="../status/compiler_status.html">Compiler
                      Status</a>.</li>

                      <li><a href="discussion_policy.htm">Discussion
                      Policy</a> page added.</li>

                      <li><a href="../libs/array/index.html">Array
                      Library</a> minor documentation improvements.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> minor updates.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a> minor updates.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.19.0">
                    <h3>1.19.0 (10 Dec 2000)</h3>

                    <ul>
                      <li><a href=
                      "../libs/concept_check/concept_check.htm">Concept Check
                      Library</a> added - tools for generic programming from
                      Jeremy Siek.</li>

                      <li><a href="../libs/python/doc/index.html">Python
                      Library</a> added - reflects C++ classes and functions
                      into Python, from Dave Abrahams.</li>

                      <li><a href=
                      "../libs/static_assert/static_assert.htm">Static Assert
                      Library</a> added - compile time assertions from John
                      Maddock</li>

                      <li><a href=
                      "../libs/property_map/property_map.html">Property Map
                      Concepts</a> added - interfaces which map key objects
                      to value objects from Jeremy Siek.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> minor updates.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a> minor updates.</li>

                      <li><a href="lib_guide.htm">Library Requirements and
                      Guidelines</a> - directory name policy added.</li>

                      <li><a href="faq.htm">FAQ</a> updated.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.18.3">
                    <h3>1.18.3 (18 Nov 2000)</h3>

                    <ul>
                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> minor fixes and additions.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a> minor fixes.</li>

                      <li><a href="../boost/cast.hpp">cast.hpp</a> Borland
                      compiler fixes.</li>

                      <li><a href="../boost/cstdint.hpp">cstdint.hpp</a>
                      changed to no longer expose names to the global
                      namespace.</li>

                      <li>BeOS5/Intel compiler status contributed by John
                      Maddock.</li>

                      <li><a href="../status/compiler_status.html">Compiler
                      Status</a> added two additional test programs.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.18.2">
                    <h3>1.18.2 (3 Nov 2000)</h3>

                    <ul>
                      <li><a href="../libs/conversion/cast.htm">Cast
                      Library</a> Fix numeric_cast&lt;&gt; bugs with floating
                      types.</li>

                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a> minor fixes.</li>

                      <li><a href="../libs/regex/index.html">Regular
                      Expression Library</a> minor fixes.</li>

                      <li><a href="../libs/config/index.html">Configuration
                      Header</a> more fixes for broken compilers.</li>

                      <li>Boost Header Dependencies page added.</li>

                      <li>Terminology change: Several headers previously
                      lumped together as a "utility" library are now
                      considered separate libraries. For historical reasons,
                      their non-header files still live in the "utility"
                      sub-directory.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.18.1">
                    <h3>1.18.1 (15 Oct 2000)</h3>

                    <ul>
                      <li><a href=
                      "../libs/graph/doc/table_of_contents.html">Graph
                      Library</a>, <a href="../libs/random/index.html">Random
                      Number Library</a>, and <a href=
                      "../libs/regex/index.html">Regular Expression
                      Library</a>: Minor fixes.</li>

                      <li><a href="../libs/config/index.html">Configuration
                      Header</a> additions for various compiler foibles.</li>

                      <li><a href="borland_cpp.html">Portability Hints:
                      Borland C++ 5.5.1</a> from Jens Maurer added.</li>

                      <li><a href="../status/compiler_status.html">Compiler
                      Status</a> updated for latest versions of several
                      compilers.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.18.0">
                    <h3>1.18.0 (28 Sep 2000)</h3>

                    <ul>
                      <li>Preliminary release of two important new libraries:

                        <ul>
                          <li><a href=
                          "../libs/graph/doc/table_of_contents.html">Graph
                          Library</a> - Generic graph components and
                          algorithms from Jeremy Siek and a University of
                          Notre Dame team.</li>

                          <li><a href="../libs/regex/index.html">Regular
                          Expression Library</a> - Text pattern matching in
                          all its glory from John Maddock.</li>
                        </ul>
                      </li>

                      <li>Other changes:

                        <ul>
                          <li><a href="../libs/array/index.html">Array
                          Library</a> improvements reflecting formal review
                          comments.</li>

                          <li><a href=
                          "../boost/functional.hpp">functional.hpp</a>
                          compiler workarounds added.</li>

                          <li><code>tie() function template</code> added to
                          utility.hpp for easier handling of
                          std::pair&lt;&gt; return values.</li>

                          <li><a href="../libs/integer/index.html">Integer
                          Library</a> improved handling of 64-bit
                          integers.</li>

                          <li>Minor web site page updates.</li>
                        </ul>
                      </li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.17.0">
                    <h3>1.17.0 (3 Aug 2000)</h3>

                    <ul>
                      <li><a href="../libs/array/index.html">Array
                      Library</a> added - An STL compliant container wrapper
                      for arrays of constant size from Nicolai Josuttis.</li>

                      <li>array traits header renamed array_traits.hpp (was
                      array.hpp).</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: more minor changes to support more
                      compilers.</li>

                      <li><a href="../libs/smart_ptr/index.html">Smart
                      Pointer Library</a>: performance reducing
                      exception-specifications removed.</li>

                      <li>Compiler and test program fixes for call_traits,
                      compressed_pair, and type_traits.</li>

                      <li>Updated <a href="../boost/cast.hpp">cast.hpp</a> to
                      clear compiler warning messages.</li>

                      <li>Linux <a href=
                      "../status/compiler_status.html">Compiler Status</a>
                      added.</li>

                      <li>Boost source code now lives in a publicly
                      accessible Concurrent Versions System (CVS)
                      repository.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.16.1">
                    <h3>1.16.1 (5 Jul 2000)</h3>

                    <ul>
                      <li><a href="../libs/integer/index.html">Integer</a>
                      library: fixed <a href=
                      "../boost/cstdint.hpp">cstdint.hpp</a> bug, added
                      <a href=
                      "../libs/integer/cstdint_test.cpp">cstdint_test.cpp</a>,
                      updated <a href=
                      "../libs/integer/cstdint.htm">docs</a>.</li>

                      <li><a href="../libs/random/index.html">Random Number
                      Library</a>: minor fixes to <a href=
                      "../boost/random.hpp">random.hpp</a> and <a href=
                      "../libs/random/random_test.cpp">random_test.cpp</a> to
                      support more compilers.</li>

                      <li>Updated <a href="../boost/cast.hpp">cast.hpp</a>
                      with more Microsoft compiler workarounds.</li>

                      <li>Updated <a href=
                      "../libs/utility/call_traits.htm">call_traits docs</a>,
                      added <a href=
                      "../libs/utility/call_traits_test.cpp">call_traits_test.cpp</a>.</li>

                      <li>Cleanup and bug fixes for <a href=
                      "../boost/operators.hpp">operators.hpp</a> and <a href=
                      "../libs/utility/operators_test.cpp">operators_test.cpp</a>.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.16.0">
                    <h3>1.16.0 (28 Jun 2000)</h3>

                    <ul>
                      <li>Added <a href=
                      "../libs/functional/index.html">Functional Library</a>
                      - Enhanced function object adaptors from Mark
                      Rodgers.</li>

                      <li>Added missing <a href=
                      "../libs/random/index.html">Random Number Library</a>
                      files.</li>

                      <li>Updated <a href=
                      "../libs/utility/operators.htm">operators docs</a> and
                      <a href=
                      "../boost/operators.hpp">operators.hpp</a>.</li>

                      <li>New <a href=
                      "../boost/iterator.hpp">iterator.hpp</a> header.</li>

                      <li>Minor <a href=
                      "../boost/rational.hpp">rational.hpp</a>, <a href=
                      "../libs/rational/rational_example.cpp">rational_example.cpp</a>,
                      and <a href=
                      "../libs/integer/integer_traits_test.cpp">integer_traits_test.cpp</a>
                      changes to support more compilers.</li>

                      <li>Revised <a href="../boost/cast.hpp">cast.hpp</a>:
                      removed implicit_cast, plus fixes for broken
                      compilers.</li>

                      <li>Minor <a href=
                      "../boost/smart_ptr.hpp">smart_ptr.hpp</a> workaround
                      for some GCC builds.</li>

                      <li>Several <a href=
                      "../boost/config.hpp">config.hpp</a> changes for
                      Microsoft, Intel, and other compilers.</li>

                      <li>Added <a href=
                      "../libs/config/index.html">Configuration Header</a>
                      page and test program.</li>

                      <li>Added Experimental <a href=
                      "../status/compiler_status.html">Compiler Status</a>
                      page showing what library works with which
                      compilers.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1.15.1">
                    <h3>1.15.1 (21 Jun 2000)</h3>

                    <p>Fixes to <a href="../boost/cast.hpp">cast.hpp</a> and
                    <a href="../libs/utility/operators.htm">operators</a>
                    fix. Minor additions to <a href=
                    "../boost/config.hpp">config.hpp</a> for Microsoft
                    compilers. The 1.15.0 operators changes seem to have
                    introduced incompatibilities. We are working on fixing
                    them, and have started to build a regression test to
                    prevent similar future problems.</p>
                  </div>

                  <div class="history_item" id="v1.15.0">
                    <h3>1.15.0 (17 Jun 2000)</h3>

                    <p><a href="../libs/random/index.html">Random Number
                    Library</a> from Jens Maurer added. Updated utility
                    library <a href=
                    "../libs/utility/operators.htm">operators</a> eliminates
                    code bloat. Minor additions to <a href=
                    "../boost/config.hpp">config.hpp</a> and <a href=
                    "../boost/cast.hpp">cast.hpp</a> for Microsoft
                    compilers.</p>
                  </div>

                  <div class="history_item" id="v1.14.3">
                    <h3>1.14.3 (29 May 2000)</h3>

                    <p>Minor additions to <a href=
                    "../boost/config.hpp">config.hpp</a> for Borland
                    compilers. Minor fix to <tt>type_traits</tt> example.
                    Minor web site fixes. <a href=
                    "formal_review_process.htm">Library Formal Review
                    Process</a> page added.</p>
                  </div>

                  <div class="history_item" id="v1.14.2">
                    <h3>1.14.2 (9 May 2000)</h3>

                    <p>No libraries updated. <a href="lib_guide.htm">Library
                    Requirements and Guidelines</a> expanded, <a href=
                    "submission_process.htm">Library Submission Process</a>
                    added.</p>
                  </div>

                  <div class="history_item" id="v1.14.1">
                    <h3>1.14.1 (17 Mar 2000)</h3>

                    <p>Minor fix to <a href=
                    "../boost/rational.hpp">rational.hpp</a>. Minor
                    documentation changes to the <a href=
                    "../libs/smart_ptr/index.html">Smart Pointer</a> Library
                    and <a href=
                    "../libs/utility/call_traits.htm">call_traits</a>,
                    <a href=
                    "../libs/utility/compressed_pair.htm">compressed_pair</a>,
                    and type_traits. Updated <a href="lib_guide.htm">Library
                    Guidelines</a> and <a href=
                    "../people/people.htm">People</a> page.</p>
                  </div>

                  <div class="history_item" id="v1.14.0">
                    <h3>1.14.0 (5 Mar 2000)</h3>

                    <p><a href="../libs/integer/index.html">Integer
                    Library</a> status upgraded after removing bin_bun.hpp.
                    The "Experimental" library category has been removed; the
                    boost files/vault now serves the purpose. Minor fix to
                    <a href="../boost/smart_ptr.hpp">smart_ptr.hpp</a> line
                    endings.</p>
                  </div>

                  <div class="history_item" id="v1.13.0">
                    <h3>1.13.0 (29 Feb 2000)</h3>

                    <p>Adds <a href="../libs/utility/index.html">Utility
                    Library</a> <a href=
                    "../libs/type_traits/index.html">type_traits</a>,
                    <a href="../libs/utility/call_traits.htm">call_traits</a>,
                    and <a href=
                    "../libs/utility/compressed_pair.htm">compressed_pair</a>
                    headers from John Maddock, Steve Cleary and Howard
                    Hinnant.</p>
                  </div>

                  <div class="history_item" id="v1.12.0">
                    <h3>1.12.0 (23 Feb 2000)</h3>

                    <p>Adds a <a href=
                    "../libs/integer/integer_traits.html">integer_traits</a>
                    header from Jens Maurer to the <a href=
                    "../libs/integer/index.html">Integer Library</a>.</p>
                  </div>

                  <div class="history_item" id="v1.11.2">
                    <h3>1.11.2 (21 Feb 2000)</h3>

                    <p><a href="../libs/smart_ptr/smarttests.htm">Smart
                    pointer timings</a> added (thanks to Gavin Collings).
                    Minor fix to the <del><tt>min_rand</tt></del> sample
                    program. Minor fixes to <a href=
                    "../boost/config.hpp">config.hpp</a>.</p>
                  </div>

                  <div class="history_item" id="v1.11.1">
                    <h3>1.11.1 (2 Feb 2000)</h3>

                    <p>Minor fix to <a href="../boost/cast.hpp">cast.hpp</a>
                    (thanks to Doncho Angelov).</p>
                  </div>

                  <div class="history_item" id="v1.11.0">
                    <h3>1.11.0 (1 Feb 2000)</h3>

                    <p>Added <a href="../libs/rational/index.html">Rational
                    Number Library</a>. Minor fixes to <a href=
                    "../boost/cast.hpp">cast.hpp</a>, <a href=
                    "../boost/config.hpp">config.hpp</a>, <a href=
                    "../boost/smart_ptr.hpp">smart_ptr.hpp</a>, <a href=
                    "../boost/utility.hpp">utility.hpp</a>, and to the
                    <del><tt>min_rand</tt></del> sample programs. Minor site
                    cleanup (thanks to Paul Baxter).</p>
                  </div>

                  <div class="history_item" id="v1.10.4">
                    <h3>1.10.4 (31 Dec 1999)</h3>

                    <p>Minor fixes to <a href=
                    "../boost/smart_ptr.hpp">smart_ptr.hpp</a> and <a href=
                    "../libs/conversion/cast.htm">cast documentation</a>.</p>
                  </div>

                  <div class="history_item" id="v1.10.3">
                    <h3>1.10.3 (30 Dec 1999)</h3>

                    <p>Minor fixes to the <del>compose library
                    examples</del>, <a href=
                    "../libs/utility/operators.htm">operators
                    documentation</a>, <a href=
                    "../boost/operators.hpp">operators.hpp</a>, <a href=
                    "../libs/conversion/cast.htm">cast documentation</a>,
                    <a href="../boost/cast.hpp">cast.hpp</a>, <a href=
                    "../boost/config.hpp">config.hpp</a>, and <a href=
                    "../boost/smart_ptr.hpp">smart_ptr.hpp</a>. This is the
                    first release with a version number. The version
                    numbering scheme is
                    <var>xxx</var>.<var>yyy</var>.<var>zzz</var>.</p>

                    <blockquote>
                      <p><var>xxx</var> = Major version<br />
                      <var>yyy</var> = New library or feature added<br />
                      <var>zzz</var> = Bug fixes only</p>
                    </blockquote>
                  </div>

                  <div class="history_item" id="v1999-12-14">
                    <h3>14 Dec 1999</h3>

                    <p><a href="../boost/operators.hpp">Operators.hpp</a>
                    <a href="../libs/utility/operators.htm">documentation</a>
                    improved.</p>
                  </div>

                  <div class="history_item" id="v1999-12-13">
                    <h3>13 Dec 1999</h3>

                    <p>Added iterator operators and helpers to <a href=
                    "../libs/utility/operators.htm">header operators.hpp</a>,
                    together with an iterator test program. This header is
                    maturing into something really useful for building
                    arithmetic or iterator user-defined types, so look it
                    over even if you browsed one of the earlier versions.</p>
                  </div>

                  <div class="history_item" id="v1999-12-11">
                    <h3>11 Dec 1999</h3>

                    <p>Added next() and prior() to <a href=
                    "../libs/utility/utility.htm">header utility.hpp</a>.</p>
                  </div>

                  <div class="history_item" id="v1999-12-08">
                    <h3>8 Dec 1999</h3>

                    <p>Minor improvements to the <a href=
                    "../libs/smart_ptr/index.html">smart pointer</a> library:
                    <code>operator ==</code>, <code>operator !=</code>, and
                    specializations for <code>std::swap</code> and
                    <code>std::less</code> now provided.</p>
                  </div>

                  <div class="history_item" id="v1999-11-18">
                    <h3>18 Nov 1999</h3>

                    <p>Minor improvements made to the <a href=
                    "../libs/utility/operators.htm">Operator
                    templates</a>.</p>
                  </div>

                  <div class="history_item" id="v1999-11-15">
                    <h3>15 Nov 1999</h3>

                    <p><a href="../libs/utility/operators.htm">Operator
                    templates</a> have been added to the <a href=
                    "../libs/utility/index.html">utility</a> library.</p>
                  </div>

                  <div class="history_item" id="v1999-10-11">
                    <h3>11 Oct 1999</h3>

                    <p>Minor <a href="../libs/smart_ptr/index.html">smart
                    pointer</a> library and <a href=
                    "../boost/config.hpp">config.hpp</a> changes to improve
                    portability.</p>
                  </div>

                  <div class="history_item" id="v1999-09-26">
                    <h3>26 Sep 1999</h3>

                    <p>Minor updates to several libraries:</p>

                    <ul>
                      <li><code>polymorphic_downcast&lt;&gt;</code> in the
                      <a href="../libs/utility/index.html">utility</a>
                      library <a href="../boost/cast.hpp">cast.hpp</a> header
                      now works for multiple inheritance cases.</li>

                      <li><code>shared_ptr&lt;&gt;</code> and
                      <code>shared_array&lt;&gt;</code> <code>swap()</code>
                      functions added in the <a href=
                      "../libs/smart_ptr/index.html">smart pointer</a>
                      library.</li>

                      <li><a href="../boost/timer.hpp">timer.hpp</a>
                      <code>elapsed_max()</code> and
                      <code>elapsed_min()</code> functions added to the
                      <a href="../libs/timer/index.html">timer</a>
                      library.</li>

                      <li>
                        <a href="../libs/integer/index.html">integer</a>
                        library <del>bin_ubin.hpp</del> changes to eliminate
                        compiler warning messages.
                      </li>

                      <li><a href="../boost/config.hpp">config.hpp</a> minor
                      changes to aid library developers. No impact on library
                      users.</li>
                    </ul>
                  </div>

                  <div class="history_item" id="v1999-09-03">
                    <h3>3 Sep 1999</h3>

                    <p>The cast functions in the <a href=
                    "../libs/utility/index.html">utility</a> library were
                    considerably simplified.</p>
                  </div>

                  <div class="history_item" id="v1999-09-01-b">
                    <h3>1 Sep 1999</h3>

                    <p>The cast functions initially in <a href=
                    "../boost/utility.hpp">utility.hpp</a> have been moved to
                    <a href="../boost/cast.hpp">cast.hpp</a>, still in the
                    <a href="../libs/utility/index.html">utility</a>
                    library.</p>
                  </div>

                  <div class="history_item" id="v1999-09-01-a">
                    <h3>1 Sep 1999</h3>

                    <p>The category "Experimental" has been added to the
                    <a href="../libs/libraries.htm">library</a> page. The
                    <a href="../libs/integer/index.html">integer</a> library
                    is the first entry.</p>
                  </div>
                  <!-- For new entries, add a 'div' of class 'history_item' and id of the appropriate version. -->

                  <p>...And the remainder are lost to the mists of time (for
                  now, anyway)....</p>
                </div>
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        <div id="footer">
          <p id="revised">Revised $Date$</p>

          <p id="copyright">Copyright Daryle Walker 2004&ndash;2005.
          Copyright Rene Rivera 2005.</p>

          <p id="license">Distributed under the Boost Software License,
          Version 1.0. (See accompanying file <a href=
          "../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or a copy at &lt;<a href=
          "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>&gt;.)</p>
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