libstdc++-v3/doc/html/manual/status.html

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   3   Introduction
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   5 </th><td width="20%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.status"></a>Chapter 1. Status</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dt><span class="section"><a href="status.html#status.iso.201z">C++ 201z</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.iso"></a>Implementation Status</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.1998"></a>C++ 1998/2003</h3></div></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.1998.status"></a>Implementation Status</h4></div></div></div><p>
   6 This status table is based on the table of contents of ISO/IEC 14882:2003.
   7 </p><p>
   8 This page describes the C++ support in mainline GCC SVN, not in any
   9 particular release.
  10 </p><div class="table"><a id="table.cxx98_status"></a><p class="title"><strong>Table 1.1. C++ 1998/2003 Implementation Status</strong></p><div class="table-contents"><table summary="C++ 1998/2003 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left">
  11         <span class="emphasis"><em>18</em></span>
  12       </td><td colspan="3" align="left">
  13         <span class="emphasis"><em>Language support</em></span>
  14       </td></tr><tr><td align="left">18.1</td><td align="left">Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2</td><td align="left">Implementation properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.1</td><td align="left">Numeric Limits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.2.1.1</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.1.2</td><td align="left"><code class="code">numeric_limits</code> members</td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.3</td><td align="left"><code class="code">float_round_style</code></td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.4</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.5</td><td align="left"><code class="code">numeric_limits</code> specializations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.2</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3</td><td align="left">Start and termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.4</td><td align="left">Dynamic memory management</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5</td><td align="left">Type identification</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.5.1</td><td align="left">Class type_info</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5.2</td><td align="left">Class bad_cast</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5.3</td><td align="left">Class bad_typeid</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.6.1</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.2</td><td align="left">Violation exception-specifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.3</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.4</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  15         <span class="emphasis"><em>19</em></span>
  16       </td><td colspan="3" align="left">
  17         <span class="emphasis"><em>Diagnostics</em></span>
  18       </td></tr><tr><td align="left">19.1</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.2</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.3</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  19         <span class="emphasis"><em>20</em></span>
  20       </td><td colspan="3" align="left">
  21         <span class="emphasis"><em>General utilities</em></span>
  22       </td></tr><tr><td align="left">20.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2.1</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.2</td><td align="left"><code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.1</td><td align="left">Base</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.2</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.3</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.4</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.5</td><td align="left">Negators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.6</td><td align="left">Binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.7</td><td align="left">Adaptors for pointers to functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.8</td><td align="left">Adaptors for pointers to members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4</td><td align="left">Memory</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.1</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2</td><td align="left">Raw storage iterator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.3</td><td align="left">Temporary buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4</td><td align="left">Specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.1</td><td align="left"><code class="code">uninitialized_copy</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.2</td><td align="left"><code class="code">uninitialized_fill</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.3</td><td align="left"><code class="code">uninitialized_fill_n</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.5</td><td align="left">Class template <code class="code">auto_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.6</td><td align="left">C library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  23         <span class="emphasis"><em>21</em></span>
  24       </td><td colspan="3" align="left">
  25         <span class="emphasis"><em>Strings</em></span>
  26       </td></tr><tr><td align="left">21.1</td><td align="left">Character traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.1.1</td><td align="left">Character traits requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.2</td><td align="left">traits typedef</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.3</td><td align="left"><code class="code">char_traits</code> specializations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.1.3.1</td><td align="left">struct <code class="code">char_traits&lt;char&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.3.2</td><td align="left">struct <code class="code">char_traits&lt;wchar_t&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">Class template <code class="code">basic_string</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Null-terminated sequence utilities</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">
  27         <span class="emphasis"><em>22</em></span>
  28       </td><td colspan="3" align="left">
  29         <span class="emphasis"><em>Localization</em></span>
  30       </td></tr><tr><td align="left">22.1</td><td align="left">Locales</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.1.1</td><td align="left">Class <code class="code">locale</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.2</td><td align="left"><code class="code">locale</code> globals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.3</td><td align="left">Convenience interfaces</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.1.3.1</td><td align="left">Character classification</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.3.2</td><td align="left">Character conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Standard locale categories</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.1</td><td align="left"><code class="code">ctype</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.2</td><td align="left">Numeric</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.2.1</td><td align="left"><code class="code">num_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.2.2</td><td align="left"><code class="code">num_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.3</td><td align="left"><code class="code">num_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.4</td><td align="left"><code class="code">collate</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5</td><td align="left">Time</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.5.1</td><td align="left"><code class="code">time_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.2</td><td align="left"><code class="code">time_get_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.3</td><td align="left"><code class="code">time_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.3</td><td align="left"><code class="code">time_put_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6</td><td align="left">Monetary</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.6.1</td><td align="left"><code class="code">money_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.2</td><td align="left"><code class="code">money_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.3</td><td align="left"><code class="code">money_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.4</td><td align="left"><code class="code">money_punct_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.7</td><td align="left"><code class="code">messages</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.8</td><td align="left">Program-defined facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  31         <span class="emphasis"><em>23</em></span>
  32       </td><td colspan="3" align="left">
  33         <span class="emphasis"><em>Containers</em></span>
  34       </td></tr><tr><td align="left">23.1</td><td align="left">Container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Sequence containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.1</td><td align="left">Class template <code class="code">deque</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.2</td><td align="left">Class template <code class="code">list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3</td><td align="left">Adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.3.1</td><td align="left">Class template <code class="code">queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3.2</td><td align="left">Class template <code class="code">priority_queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3.3</td><td align="left">Class template <code class="code">stack</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.4</td><td align="left">Class template <code class="code">vector</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.5</td><td align="left">Class <code class="code">vector&lt;bool&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.3.1</td><td align="left">Class template <code class="code">map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.2</td><td align="left">Class template <code class="code">multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.3</td><td align="left">Class template <code class="code">set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.4</td><td align="left">Class template <code class="code">multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  35         <span class="emphasis"><em>24</em></span>
  36       </td><td colspan="3" align="left">
  37         <span class="emphasis"><em>Iterators</em></span>
  38       </td></tr><tr><td align="left">24.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Header <code class="code">&lt;iterator&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">Predefined iterators and Iterator adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.4.1</td><td align="left">Reverse iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.2</td><td align="left">Insert iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5</td><td align="left">Stream iterators</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.5.1</td><td align="left">Class template <code class="code">istream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.2</td><td align="left">Class template <code class="code">ostream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.3</td><td align="left">Class template <code class="code">istreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.4</td><td align="left">Class template <code class="code">ostreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  39         <span class="emphasis"><em>25</em></span>
  40       </td><td colspan="3" align="left">
  41         <span class="emphasis"><em>Algorithms</em></span>
  42       </td></tr><tr><td align="left">25.1</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  43       <span class="emphasis"><em>26</em></span>
  44       </td><td colspan="3" align="left">
  45         <span class="emphasis"><em>Numerics</em></span>
  46       </td></tr><tr><td align="left">26.1</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">Numeric arrays</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.3.1</td><td align="left">Header <code class="code">&lt;valarray&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.2</td><td align="left">Class template <code class="code">valarray</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.3</td><td align="left"><code class="code">valarray</code> non-member operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.4</td><td align="left">Class <code class="code">slice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.5</td><td align="left">Class template <code class="code">slice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.6</td><td align="left">Class <code class="code">gslice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.7</td><td align="left">Class template <code class="code">gslice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.8</td><td align="left">Class template <code class="code">mask_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.9</td><td align="left">Class template <code class="code">indirect_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Generalized numeric operations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.4.1</td><td align="left"><code class="code">accumulate</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.2</td><td align="left"><code class="code">inner_product</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.3</td><td align="left"><code class="code">partial_sum</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.4</td><td align="left"><code class="code">adjacent_difference</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.5</td><td align="left">iota</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  47         <span class="emphasis"><em>27</em></span>
  48       </td><td colspan="3" align="left">
  49         <span class="emphasis"><em>Input/output</em></span>
  50       </td></tr><tr><td align="left">27.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3.1</td><td align="left">Narrow stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3.2</td><td align="left">Wide stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
  51         <span class="emphasis"><em>Appendix D</em></span>
  52       </td><td colspan="3" align="left">
  53         <span class="emphasis"><em>Compatibility features</em></span>
  54       </td></tr><tr><td align="left">D.1</td><td align="left">Increment operator with bool operand</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.2</td><td align="left"><code class="code">static</code> keyword</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.3</td><td align="left">Access declarations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.4</td><td align="left">Implicit conversion from const strings</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left">Old iostreams members</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left">char* streams</td><td align="left"> </td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.1998.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>
  55      The ISO standard defines the following phrase:
  56    </p><div class="blockquote"><blockquote class="blockquote"><div class="variablelist"><dl class="variablelist"><dt><span class="term">
  57          <code class="code">[1.3.5] implementation-defined behavior</code>
  58        </span></dt><dd><p>
  59          Behavior, for a well-formed program construct and correct data, that
  60          depends on the implementation <span class="emphasis"><em>and that each implementation
  61          shall document</em></span>.
  62          </p></dd></dl></div></blockquote></div><p>
  63      We do so here, for the C++ library only.  Behavior of the
  64      compiler, linker, runtime loader, and other elements of "the
  65      implementation" are documented elsewhere.  Everything listed
  66      in Annex B, Implementation Qualities, are also part of the
  67      compiler, not the library.
  68    </p><p>
  69      For each entry, we give the section number of the standard, when
  70      applicable.  This list is probably incomplet and inkorrekt.
  71    </p><p>
  72      <span class="emphasis"><em>[1.9]/11 #3</em></span> If <code class="code">isatty(3)</code> is true, then
  73       interactive stream support is implied.
  74    </p><p>
  75      <span class="emphasis"><em>[17.4.4.5]</em></span> Non-reentrant functions are probably best
  76       discussed in the various sections on multithreading (see above).
  77    </p><p><span class="emphasis"><em>[18.1]/4</em></span> The type of <code class="code">NULL</code> is described
  78       under <a class="link" href="support.html#std.support.types.null" title="NULL">Support</a>.
  79    </p><p><span class="emphasis"><em>[18.3]/8</em></span> Even though it's listed in the library
  80       sections, libstdc++ has zero control over what the cleanup code hands
  81       back to the runtime loader.  Talk to the compiler people.  :-)
  82    </p><p><span class="emphasis"><em>[18.4.2.1]/5</em></span> (bad_alloc),
  83       <span class="emphasis"><em>[18.5.2]/5</em></span> (bad_cast),
  84       <span class="emphasis"><em>[18.5.3]/5</em></span> (bad_typeid),
  85       <span class="emphasis"><em>[18.6.1]/8</em></span> (exception),
  86       <span class="emphasis"><em>[18.6.2.1]/5</em></span> (bad_exception):  The <code class="code">what()</code>
  87       member function of class <code class="code">std::exception</code>, and these other
  88       classes publicly derived from it, returns the name of the
  89       class, e.g. <code class="literal">"std::bad_alloc"</code>.
  90    </p><p><span class="emphasis"><em>[18.5.1]/7</em></span> The return value of
  91       <code class="code">std::type_info::name()</code> is the mangled type name.
  92       You will need to call <code class="code">c++filt</code> and pass the names as
  93       command-line parameters to demangle them, or call a
  94       <a class="link" href="ext_demangling.html" title="Chapter 29. Demangling">runtime demangler function</a>.
  95    </p><p><span class="emphasis"><em>[20.1.5]/5</em></span> <span class="emphasis"><em>"Implementors are encouraged to
  96       supply libraries that can accept allocators that encapsulate more
  97       general memory models and that support non-equal instances.  In such
  98       implementations, any requirements imposed on allocators by containers
  99       beyond those requirements that appear in Table 32, and the semantics
 100       of containers and algorithms when allocator instances compare
 101       non-equal, are implementation-defined."</em></span>  There is experimental
 102       support for non-equal allocators in the standard containers in C++98
 103       mode. There are no additional requirements on allocators. It is undefined
 104       behaviour to swap two containers if their allocators are not equal.
 105    </p><p><span class="emphasis"><em>[21.1.3.1]/3,4</em></span>,
 106       <span class="emphasis"><em>[21.1.3.2]/2</em></span>,
 107       <span class="emphasis"><em>[21.3]/6 basic_string::iterator, basic_string::const_iterator</em></span>,
 108       <span class="emphasis"><em>[23.*]'s foo::iterator</em></span>,
 109       <span class="emphasis"><em>[27.*]'s foo::*_type</em></span>,
 110       <span class="emphasis"><em>others...</em></span>
 111       Nope, these types are called implementation-defined because you
 112       shouldn't be taking advantage of their underlying types.  Listing them
 113       here would defeat the purpose.  :-)
 114    </p><p><span class="emphasis"><em>[21.1.3.1]/5</em></span> I don't really know about
 115       the <span class="type">mbstate_t</span> stuff... see
 116       the <a class="link" href="facets.html#std.localization.facet.codecvt" title="codecvt"><code class="code">codecvt</code>
 117       notes</a> for what does exist.
 118    </p><p><span class="emphasis"><em>[22.*]</em></span> Anything and everything we have on locale
 119       implementation will be described under
 120       <a class="link" href="localization.html#std.localization.locales.locale" title="locale">Localization</a>.
 121    </p><p><span class="emphasis"><em>[26.2.8]/9</em></span> I have no idea what
 122       <code class="code">complex&lt;T&gt;</code>'s <code class="code">pow(0,0)</code> returns.
 123    </p><p><span class="emphasis"><em>[27.4.2.4]/2</em></span> Calling
 124       <code class="code">std::ios_base::sync_with_stdio</code> after I/O has already been
 125       performed on the standard stream objects will
 126       flush the buffers, and
 127       destroy and recreate the underlying buffer instances.  Whether or not
 128       the previously-written I/O is destroyed in this process depends mostly
 129       on the <code class="code">--enable-libio</code> choice:  for stdio, if the written
 130       data is already in the stdio buffer, the data may be completely safe!
 131    </p><p><span class="emphasis"><em>[27.6.1.1.2]</em></span>,
 132       <span class="emphasis"><em>[27.6.2.3]</em></span> The I/O sentry ctor and dtor can perform
 133       additional work than the minimum required.  We are not currently taking
 134       advantage of this yet.
 135    </p><p><span class="emphasis"><em>[27.7.1.3]/16</em></span>,
 136       <span class="emphasis"><em>[27.8.1.4]/10</em></span>
 137       The effects of <code class="code">pubsetbuf/setbuf</code> are described in the
 138       <a class="link" href="io.html" title="Chapter 13.  Input and Output">Input and Output</a> chapter.
 139    </p><p><span class="emphasis"><em>[27.8.1.4]/16</em></span> Calling <code class="code">fstream::sync</code> when
 140       a get area exists will... whatever <code class="code">fflush()</code> does, I think.
 141    </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2011"></a>C++ 2011</h3></div></div></div><p>
 142 <a id="status.iso.200x"></a>
 143 This table is based on the table of contents of ISO/IEC
 144 JTC1 SC22 WG21 Doc No: N3290 Date: 2011-04-11
 145 Final Draft International Standard, Standard for Programming Language C++
 146 </p><p>
 147 In this implementation the <code class="literal">-std=gnu++11</code> or
 148 <code class="literal">-std=c++11</code> flag must be used to enable language
 149 and library
 150 features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a>
 151 options. The pre-defined symbol
 152 <code class="constant">__cplusplus</code> is used to check for the
 153 presence of the required flag.
 154 </p><p>
 155 This page describes the C++11 support in mainline GCC SVN, not in any
 156 particular release.
 157 </p><div class="table"><a id="table.cxx11_status"></a><p class="title"><strong>Table 1.2. C++ 2011 Implementation Status</strong></p><div class="table-contents"><table summary="C++ 2011 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left">
 158         <span class="emphasis"><em>18</em></span>
 159       </td><td colspan="3" align="left">
 160         <span class="emphasis"><em>Language support</em></span>
 161       </td></tr><tr><td align="left">18.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2</td><td align="left">Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3</td><td align="left">Implementation properties</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2</td><td align="left">Numeric Limits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2.3</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.2.4</td><td align="left"><code class="code">numeric_limits</code> members</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.5</td><td align="left"><code class="code">float_round_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.6</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">18.3.2.7</td><td align="left"><code class="code">numeric_limits</code> specializations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.3</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.4</td><td align="left">Integer types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.4.1</td><td align="left">Header <code class="code">&lt;cstdint&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">18.5</td><td align="left">Start and termination</td><td align="left">Partial</td><td align="left">C library dependency for quick_exit, at_quick_exit</td></tr><tr><td align="left">18.6</td><td align="left">Dynamic memory management</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7</td><td align="left">Type identification</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.7.1</td><td align="left">Class type_info</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.2</td><td align="left">Class bad_cast</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.3</td><td align="left">Class bad_typeid</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.8.1</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.2</td><td align="left">Class bad_exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.3</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.4</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.5</td><td align="left">Exception Propagation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.6</td><td align="left"><code class="code">nested_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9</td><td align="left">Initializer lists</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.9.1</td><td align="left">Initializer list constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.2</td><td align="left">Initializer list access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.3</td><td align="left">Initializer list range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.10</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 162         <span class="emphasis"><em>19</em></span>
 163       </td><td colspan="3" align="left">
 164         <span class="emphasis"><em>Diagnostics</em></span>
 165       </td></tr><tr><td align="left">19.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.2</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.3</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.4</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5</td><td align="left">System error support</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">19.5.1</td><td align="left">Class <code class="code">error_category</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.2</td><td align="left">Class <code class="code">error_code</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.3</td><td align="left">Class <code class="code">error_condition</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.4</td><td align="left">Comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.5</td><td align="left">Class <code class="code">system_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 166         <span class="emphasis"><em>20</em></span>
 167       </td><td colspan="3" align="left">
 168         <span class="emphasis"><em>General utilities</em></span>
 169       </td></tr><tr><td align="left">20.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2.1</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.2</td><td align="left">Swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.3</td><td align="left"><code class="code">forward</code> and <code class="code">move</code> helpers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.4</td><td align="left">Function template <code class="code">declval</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3</td><td align="left">Pairs</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.2</td><td align="left">Class template <code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.3</td><td align="left">Specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.4</td><td align="left">Tuple-like access to <code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.5</td><td align="left">Piecewise construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4</td><td align="left">Tuples</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.2</td><td align="left">Class template <code class="code">tuple</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.2.1</td><td align="left">Construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.2</td><td align="left">Assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.3</td><td align="left">Swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.4</td><td align="left">Tuple creation functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.5</td><td align="left">Tuple helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.6</td><td align="left">Element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.7</td><td align="left">Relational operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.8</td><td align="left">Tuple traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.9</td><td align="left">Tuple specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5</td><td align="left">Class template <code class="code">bitset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.1</td><td align="left"><code class="code">bitset</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.2</td><td align="left"><code class="code">bitset</code> members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.3</td><td align="left"><code class="code">bitset</code> hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.4</td><td align="left"><code class="code">bitset</code> operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6</td><td align="left">Memory</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.2</td><td align="left">Header <code class="code">&lt;memory&gt;</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.3</td><td align="left">Pointer traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.4</td><td align="left">Pointer safety</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.5</td><td align="left">Align</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.6</td><td align="left">Allocator argument tag</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.7</td><td align="left"><code class="code">uses_allocator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.8</td><td align="left">Allocator traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.9</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.10</td><td align="left">Raw storage iterator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.11</td><td align="left">Temporary buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12</td><td align="left">Specialized algorithms</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.12.1</td><td align="left"><code class="code">addressof</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.2</td><td align="left"><code class="code">uninitialized_copy</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.3</td><td align="left"><code class="code">uninitialized_fill</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.4</td><td align="left"><code class="code">uninitialized_fill_n</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.13</td><td align="left">C library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.7.1</td><td align="left">Class template <code class="code">unique_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2</td><td align="left">Shared-ownership pointers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.1</td><td align="left">Class <code class="code">bad_weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.2</td><td align="left">Class template <code class="code">shared_ptr</code></td><td align="left">Y</td><td align="left">
 170           Uses code from
 171           <a class="link" href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">boost::shared_ptr</a>.
 172       </td></tr><tr><td align="left">20.7.2.3</td><td align="left">Class template <code class="code">weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.4</td><td align="left">Class template <code class="code">emable_shared_from_this</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.5</td><td align="left"><code class="code">shared_ptr</code> atomic access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.6</td><td align="left">Smart pointer hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.1</td><td align="left">Definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.2</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.3</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.4</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.5</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.6</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.7</td><td align="left">Bitwise operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.8</td><td align="left">Negators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.9</td><td align="left">Function template <code class="code">bind</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.10</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.11</td><td align="left">Polymorphic function wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.11.1</td><td align="left">Class <code class="code">bad_function_call</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">20.8.11.2</td><td align="left">Class template <code class="code">function</code></td><td align="left">Partial</td><td align="left">Missing allocator support</td></tr><tr><td align="left">20.8.12</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9</td><td align="left">Metaprogramming and type traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.2</td><td align="left">Header <code class="code">&lt;type_traits&gt;</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4</td><td align="left">Unary Type Traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.1</td><td align="left">Primary type categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.2</td><td align="left">Composite type traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.3</td><td align="left">Type properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.5</td><td align="left">Type property queries</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7</td><td align="left">Transformations between types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.7.1</td><td align="left">Const-volatile modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.2</td><td align="left">Reference modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.3</td><td align="left">Sign modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.4</td><td align="left">Array modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.5</td><td align="left">Pointer modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.6</td><td align="left">Other transformations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10</td><td align="left">Compile-time rational arithmetic</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.2</td><td align="left">Header <code class="code">&lt;ratio&gt;</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.3</td><td align="left">Class template <code class="code">ratio</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.4</td><td align="left">Arithmetic on <code class="code">ratio</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.5</td><td align="left">Comparison of <code class="code">ratio</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.6</td><td align="left">SI types for <code class="code">ratio</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11</td><td align="left">Time utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.3</td><td align="left">Clock requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4</td><td align="left">Time-related traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.4.1</td><td align="left"><code class="code">treat_as_floating_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4.2</td><td align="left"><code class="code">duration_values</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4.3</td><td align="left">Specializations of <code class="code">common_type</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.5</td><td align="left">Class template <code class="code">duration</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.6</td><td align="left">Class template <code class="code">time_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7</td><td align="left">Clocks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.7.1</td><td align="left">Class <code class="code">system_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7.2</td><td align="left">Class <code class="code">steady_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7.3</td><td align="left">Class <code class="code">high_resolution_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.8</td><td align="left">Date and time functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12</td><td align="left">Scoped allocator adaptor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.1</td><td align="left">Header <code class="code">&lt;scoped_allocator&gt;</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.12.2</td><td align="left">Scoped allocator adaptor member types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.3</td><td align="left">Scoped allocator adaptor constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.4</td><td align="left">Scoped allocator adaptor members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.5</td><td align="left">Scoped allocator operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.13</td><td align="left">Class <code class="code">type_index</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 173         <span class="emphasis"><em>21</em></span>
 174       </td><td colspan="3" align="left">
 175         <span class="emphasis"><em>Strings</em></span>
 176       </td></tr><tr><td align="left">21.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">Character traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.2.1</td><td align="left">Character traits requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.2</td><td align="left">traits typedefs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3</td><td align="left"><code class="code">char_traits</code> specializations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.2.3.1</td><td align="left">struct <code class="code">char_traits&lt;char&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.2</td><td align="left">struct <code class="code">char_traits&lt;char16_t&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.3</td><td align="left">struct <code class="code">char_traits&lt;char32_t&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.4</td><td align="left">struct <code class="code">char_traits&lt;wchar_t&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Class template <code class="code">basic_string</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.5</td><td align="left">Numeric Conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.6</td><td align="left">Hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">21.7</td><td align="left">Null-terminated sequence utilities</td><td align="left">Partial</td><td align="left">C library dependency.
 177       Missing <code class="filename">&lt;cuchar&gt;</code>
 178       </td></tr><tr><td align="left">
 179         <span class="emphasis"><em>22</em></span>
 180       </td><td colspan="3" align="left">
 181         <span class="emphasis"><em>Localization</em></span>
 182       </td></tr><tr><td align="left">22.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Header <code class="code">&lt;locale&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">Locales</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.1</td><td align="left">Class <code class="code">locale</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.2</td><td align="left"><code class="code">locale</code> globals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3</td><td align="left">Convenience interfaces</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.3.1</td><td align="left">Character classification</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2</td><td align="left">Conversions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.1</td><td align="left">Character conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.2</td><td align="left"><code class="code">string</code> conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.3</td><td align="left">Buffer conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4</td><td align="left">Standard <code class="code">locale</code> categories</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.1</td><td align="left">The <code class="code">ctype</code> category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.2</td><td align="left">The numeric category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.2.1</td><td align="left"><code class="code">num_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.2.2</td><td align="left"><code class="code">num_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.3</td><td align="left">The numeric punctuation facet</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.4</td><td align="left">The collate category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5</td><td align="left">The time category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.5.1</td><td align="left">Class template <code class="code">time_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.2</td><td align="left">Class template <code class="code">time_get_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.3</td><td align="left">Class template <code class="code">time_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.3</td><td align="left">Class template <code class="code">time_put_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6</td><td align="left">The monetary category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.6.1</td><td align="left">Class template <code class="code">money_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.2</td><td align="left">Class template <code class="code">money_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.3</td><td align="left">Class template <code class="code">money_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.4</td><td align="left">Class template <code class="code">money_punct_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.7</td><td align="left">The message retrieval category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.8</td><td align="left">Program-defined facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.5</td><td align="left">Standard code conversion facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.6</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 183         <span class="emphasis"><em>23</em></span>
 184       </td><td colspan="3" align="left">
 185         <span class="emphasis"><em>Containers</em></span>
 186       </td></tr><tr><td align="left">23.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Container requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.1</td><td align="left">General container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.2</td><td align="left">Container data races</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3</td><td align="left">Sequence containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.4</td><td align="left">Associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.5</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Sequence containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.3.2</td><td align="left">Class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.3</td><td align="left">Class template <code class="code">deque</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.4</td><td align="left">Class template <code class="code">forward_list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.5</td><td align="left">Class template <code class="code">list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.6</td><td align="left">Class template <code class="code">vector</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.7</td><td align="left">Class <code class="code">vector&lt;bool&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4</td><td align="left">Associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.4.4</td><td align="left">Class template <code class="code">map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.5</td><td align="left">Class template <code class="code">multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.6</td><td align="left">Class template <code class="code">set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.7</td><td align="left">Class template <code class="code">multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5</td><td align="left">Unordered associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.5.4</td><td align="left">Class template <code class="code">unordered_map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.5</td><td align="left">Class template <code class="code">unordered_multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.6</td><td align="left">Class template <code class="code">unordered_set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.7</td><td align="left">Class template <code class="code">unordered_multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6</td><td align="left">Container adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.6.1</td><td align="left">Class template <code class="code">queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6.2</td><td align="left">Class template <code class="code">priority_queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6.3</td><td align="left">Class template <code class="code">stack</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 187         <span class="emphasis"><em>24</em></span>
 188       </td><td colspan="3" align="left">
 189         <span class="emphasis"><em>Iterators</em></span>
 190       </td></tr><tr><td align="left">24.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Iterator requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">Header <code class="code">&lt;iterator&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5</td><td align="left">Iterator adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.5.1</td><td align="left">Reverse iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.2</td><td align="left">Insert iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.3</td><td align="left">Move iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6</td><td align="left">Stream iterators</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.6.1</td><td align="left">Class template <code class="code">istream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.2</td><td align="left">Class template <code class="code">ostream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.3</td><td align="left">Class template <code class="code">istreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.4</td><td align="left">Class template <code class="code">ostreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.5</td><td align="left">range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 191         <span class="emphasis"><em>25</em></span>
 192       </td><td colspan="3" align="left">
 193         <span class="emphasis"><em>Algorithms</em></span>
 194       </td></tr><tr><td align="left">25.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.5</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 195       <span class="emphasis"><em>26</em></span>
 196       </td><td colspan="3" align="left">
 197         <span class="emphasis"><em>Numerics</em></span>
 198       </td></tr><tr><td align="left">26.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">The floating-point environment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">Random number generation</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.1</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.2</td><td align="left">Header <code class="code">&lt;random&gt;</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.3</td><td align="left">Random number engine class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.3.1</td><td align="left">Class template <code class="code">linear_congruential_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.3.2</td><td align="left">Class template <code class="code">mersenne_twister_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.3.3</td><td align="left">Class template <code class="code">subtract_with_carry_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4</td><td align="left">Random number engine adaptor class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.4.2</td><td align="left">Class template <code class="code">discard_block_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4.3</td><td align="left">Class template <code class="code">independent_bits_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4.4</td><td align="left">Class template <code class="code">shuffle_order_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.5</td><td align="left">Engines and engine adaptors with predefined parameters</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.6</td><td align="left">Class <code class="code">random_device</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.7</td><td align="left">Utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.7.1</td><td align="left">Class <code class="code">seed_seq</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.7.2</td><td align="left">Function template <code class="code">generate_canonical</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8</td><td align="left">Random number distribution class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.2</td><td align="left">Uniform distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.2.1</td><td align="left">Class template <code class="code">uniform_int_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.2.2</td><td align="left">Class template <code class="code">uniform_real_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3</td><td align="left">Bernoulli distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.1</td><td align="left">Class <code class="code">bernoulli_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.2</td><td align="left">Class template <code class="code">binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.3</td><td align="left">Class template <code class="code">geometric_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.4</td><td align="left">Class template <code class="code">negative_binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4</td><td align="left">Poisson distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.1</td><td align="left">Class template <code class="code">poisson_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.2</td><td align="left">Class template <code class="code">exponential_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.3</td><td align="left">Class template <code class="code">gamma_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.4</td><td align="left">Class template <code class="code">weibull_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.5</td><td align="left">Class template <code class="code">extreme_value_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5</td><td align="left">Normal distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.1</td><td align="left">Class template <code class="code">normal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.2</td><td align="left">Class template <code class="code">lognormal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.3</td><td align="left">Class template <code class="code">chi_squared_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.4</td><td align="left">Class template <code class="code">cauchy_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.5</td><td align="left">Class template <code class="code">fisher_f_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.6</td><td align="left">Class template <code class="code">student_t_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6</td><td align="left">Sampling distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.1</td><td align="left">Class template <code class="code">discrete_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.2</td><td align="left">Class template <code class="code">piecewise_constant_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.3</td><td align="left">Class template <code class="code">piecewise_linear_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6</td><td align="left">Numeric arrays</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.6.1</td><td align="left">Header <code class="code">&lt;valarray&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.2</td><td align="left">Class template <code class="code">valarray</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.3</td><td align="left"><code class="code">valarray</code> non-member operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.4</td><td align="left">Class <code class="code">slice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.5</td><td align="left">Class template <code class="code">slice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.6</td><td align="left">The <code class="code">gslice</code> class</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.7</td><td align="left">Class template <code class="code">gslice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.8</td><td align="left">Class template <code class="code">mask_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.9</td><td align="left">Class template <code class="code">indirect_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.10</td><td align="left"><code class="code">valarray</code> range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7</td><td align="left">Generalized numeric operations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.7.1</td><td align="left">Header <code class="code">&lt;numeric&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.2</td><td align="left"><code class="code">accumulate</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.3</td><td align="left"><code class="code">inner_product</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.4</td><td align="left"><code class="code">partial_sum</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.5</td><td align="left"><code class="code">adjacent_difference</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.6</td><td align="left">iota</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.8</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 199         <span class="emphasis"><em>27</em></span>
 200       </td><td colspan="3" align="left">
 201         <span class="emphasis"><em>Input/output library</em></span>
 202       </td></tr><tr><td align="left">27.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Iostreams requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.1</td><td align="left">Imbue Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.2</td><td align="left">Positioning Type Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">27.2.3</td><td align="left">Thread safety</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.1</td><td align="left">Overview</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.2</td><td align="left">Narrow stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.3</td><td align="left">Wide stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.9</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 203         <span class="emphasis"><em>28</em></span>
 204       </td><td colspan="3" align="left">
 205         <span class="emphasis"><em>Regular expressions</em></span>
 206       </td></tr><tr><td align="left">28.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.4</td><td align="left">Header <code class="code">&lt;regex&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.5</td><td align="left">Namespace <code class="code">std::regex_constants</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">28.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">Partial</td><td align="left"><code class="code">transform_primary</code> is not correctly implemented</td><td align="left"> </td></tr><tr><td align="left">28.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.11</td><td align="left">Regular expression algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.12</td><td align="left">Regular expression Iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 207         <span class="emphasis"><em>29</em></span>
 208       </td><td colspan="3" align="left">
 209         <span class="emphasis"><em>Atomic operations</em></span>
 210       </td></tr><tr><td align="left">29.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.2</td><td align="left">Header <code class="code">&lt;atomic&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">29.3</td><td align="left">Order and consistency</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">29.4</td><td align="left">Lock-free property</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.5</td><td align="left">Atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.6</td><td align="left">Operations on atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.7</td><td align="left">Flag Type and operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8</td><td align="left">Fences</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 211         <span class="emphasis"><em>30</em></span>
 212       </td><td colspan="3" align="left">
 213         <span class="emphasis"><em>Thread support</em></span>
 214       </td></tr><tr><td align="left">30.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.3</td><td align="left">Threads</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.3.1</td><td align="left">Class <code class="code">thread</code></td><td align="left">Partial</td><td align="left"><code class="code">thread::id</code> comparisons not well-defined</td></tr><tr><td align="left">30.3.2</td><td align="left">Namespace <code class="code">this_thread</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4</td><td align="left">Mutual exclusion</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1</td><td align="left">Mutex requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2</td><td align="left">Mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.1</td><td align="left">Class <code class="code">mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.2</td><td align="left">Class <code class="code">recursive_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3</td><td align="left">Timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.1</td><td align="left">Class <code class="code">timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.2</td><td align="left">Class <code class="code">recursive_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2</td><td align="left">Locks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.2.1</td><td align="left">Class template <code class="code">lock_guard</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2.2</td><td align="left">Class template <code class="code">unique_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.3</td><td align="left">Generic locking algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.4</td><td align="left">Call once</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.4.1</td><td align="left">Struct <code class="code">once_flag</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.4.2</td><td align="left">Function <code class="code">call_once</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5</td><td align="left">Condition variables</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.1</td><td align="left">Class <code class="code">condition_variable</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.2</td><td align="left">Class <code class="code">condition_variable_any</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6</td><td align="left">Futures</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.1</td><td align="left">Overview</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.2</td><td align="left">Error handling</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.3</td><td align="left">Class <code class="code">future_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.4</td><td align="left">Shared state</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.5</td><td align="left">Class template <code class="code">promise</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.6</td><td align="left">Class template <code class="code">future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.7</td><td align="left">Class template <code class="code">shared_future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.8</td><td align="left">Function template <code class="code">async</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.9</td><td align="left">Class template <code class="code">packaged_task</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 215         <span class="emphasis"><em>Appendix D</em></span>
 216       </td><td colspan="3" align="left">
 217         <span class="emphasis"><em>Compatibility features</em></span>
 218       </td></tr><tr><td align="left">D.1</td><td align="left">Increment operator with <code class="code">bool</code> operand</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.2</td><td align="left"><code class="code">register</code> keyword</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.3</td><td align="left">Implicit declaration of copy functions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.4</td><td align="left">Dynamic exception specifications</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left">Old iostreams members</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left"><code class="code">char*</code> streams</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.8</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.9</td><td align="left">Binders</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.10</td><td align="left"><code class="code">auto_ptr</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.11</td><td align="left">Violating exception-specifications</td><td align="left"> </td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.2011.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is also specified by the 1998 and 2003 standards,
 219       see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation
 220       Specific Behavior</a>. This section only documents behaviour which
 221       is new in the 2011 standard.
 222    </p><p>
 223       <span class="emphasis"><em>17.6.5.12 [res.on.exception.handling]</em></span>
 224       There are no implementation-defined exception classes, only standard
 225       exception classes (or classes derived from them) will be thrown.
 226    </p><p>
 227       <span class="emphasis"><em>17.6.5.14 [value.error.codes]</em></span>
 228       The <code class="classname">error_category</code> for errors originating outside
 229       the OS, and the possible error code values for each error category,
 230       should be documented here.
 231    </p><p>
 232       <span class="emphasis"><em>18.6.2.2 [new.badlength]</em></span>
 233       <code class="function">what()</code> returns
 234       <code class="literal">"std::bad_array_new_length"</code>.
 235    </p><p>
 236       <span class="emphasis"><em>20.6.9.1 [allocator.member]/5</em></span>
 237       Over-aligned types are not supported by
 238       <code class="classname">std::allocator</code>.
 239    </p><p>
 240       <span class="emphasis"><em>20.7.2.2.1 [util.smartptr.shared.const]</em></span>
 241       When a <code class="classname">shared_ptr</code> constructor fails
 242       <code class="classname">bad_alloc</code> (or types derived from it) will
 243       be thrown, or when an allocator is passed to the constructor then any
 244       exceptions thrown by the allocator.
 245    </p><p>
 246       <span class="emphasis"><em>20.7.2.0 [util.smartptr.weakptr]</em></span>
 247       <code class="code">what()</code> returns <code class="literal">"bad_weak_ptr"</code>.
 248    </p><p>
 249       <span class="emphasis"><em>20.8.9.1.3 [func.bind.place]/1</em></span> There are 29
 250       placeholders defined and the placeholder types are
 251       <code class="literal">CopyAssignable</code>.
 252    </p><p>
 253       <span class="emphasis"><em>20.11.7.1 [time.clock.system]/3, /4</em></span>
 254       Time point values are truncated to <code class="code">time_t</code> values.
 255       There is no loss of precision for conversions in the other direction.
 256    </p><p>
 257       <span class="emphasis"><em>20.15.7 [meta.trans]/2</em></span>
 258       <code class="classname">aligned_storage</code> does not support extended
 259       alignment.
 260    </p><p>
 261       <span class="emphasis"><em>21.2.3.2 [char.traits.specializations.char16_t]</em></span>,
 262       <span class="emphasis"><em>21.2.3.3 [char.traits.specializations.char32_t]</em></span>
 263       The types <code class="classname">u16streampos</code> and
 264       <code class="classname">u32streampos</code> are both synonyms for
 265       <code class="classname">fpos&lt;mbstate_t&gt;</code>.
 266       The function <code class="function">eof</code> returns <code class="code">int_type(-1)</code>.
 267    </p><p>
 268       <span class="emphasis"><em>22.3.1 [locale]</em></span>
 269       There is one global locale for the whole program, not per-thread.
 270    </p><p>
 271       <span class="emphasis"><em>22.4.5.1.2 [locale.time.get.virtuals]</em></span>,
 272       <span class="emphasis"><em>22.4.5.3.2 [locale.time.put.virtuals]</em></span>
 273       Additional supported formats should be documented here.
 274    </p><p>
 275       <span class="emphasis"><em> 22.4.7.1.2 [locale.messages.virtuals]</em></span>
 276       The mapping should be documented here.
 277    </p><p>
 278       <span class="emphasis"><em>23.3.2.1 [array.overview]</em></span>
 279       <code class="classname">array&lt;T, N&gt;::iterator</code> is <code class="code">T*</code> and
 280       <code class="classname">array&lt;T, N&gt;::const_iterator</code> is
 281       <code class="code">const T*</code>.
 282    </p><p>
 283       <span class="emphasis"><em>23.5.4.2 [unord.map.cnstr]</em></span>,
 284       <span class="emphasis"><em>23.5.5.2 [unord.multimap.cnstr]</em></span>,
 285       <span class="emphasis"><em>23.5.6.2 [unord.set.cnstr]</em></span>,
 286       <span class="emphasis"><em>23.5.7.2 [unord.multiset.cnstr]</em></span>
 287       The default minimal bucket count is 0 for the default constructors, range
 288       constructors and initializer-list constructors.
 289    </p><p>
 290       <span class="emphasis"><em>25.3.12 [alg.random.shuffle]</em></span>
 291       The two-argument overload of <code class="function">random_shuffle</code>
 292       uses <code class="function">rand</code> as the source of randomness.
 293    </p><p>
 294       <span class="emphasis"><em>26.5.5 [rand.predef]</em></span>
 295       The type <code class="classname">default_random_engine</code> is a synonym for
 296       <code class="classname">minstd_rand0</code>.
 297    </p><p>
 298       <span class="emphasis"><em> 26.5.6 [rand.device] </em></span>
 299       The default <code class="code">token</code> argument to the
 300       <code class="classname">random_device</code> constructor is
 301       <code class="literal">"default"</code>. Other valid arguments are
 302       <code class="literal">"/dev/random"</code> and <code class="literal">"/dev/urandom"</code>,
 303       which determine the character special file to read random bytes from.
 304       The <code class="literal">"default"</code> token will read bytes from a hardware
 305       RNG if available (currently this only supports the IA-32 RDRAND
 306       instruction) otherwise it is equivalent to
 307       <code class="literal">"/dev/urandom"</code>.
 308       An exception of type <code class="classname">runtime_error</code> will be
 309       thrown if a <code class="classname">random_device</code> object cannot open
 310       or read from the source of random bytes.
 311    </p><p>
 312       <span class="emphasis"><em>26.5.8.1 [rand.dist.general]</em></span>
 313       The algorithms used by the distributions should be documented here.
 314    </p><p>
 315       <span class="emphasis"><em>26.8 [c.math]</em></span> Whether the
 316       <code class="function">rand</code> function introduces data races depends on
 317       the C library as the function is not provided by libstdc++.
 318    </p><p>
 319       <span class="emphasis"><em>27.8.2.1 [stringbuf.cons]</em></span>
 320       Whether the sequence pointers are copied by the
 321       <code class="classname">basic_stringbuf</code> move constructor should be
 322       documented here.
 323    </p><p>
 324       <span class="emphasis"><em>27.9.1.2 [filebuf.cons]</em></span>
 325       Whether the sequence pointers are copied by the
 326       <code class="classname">basic_filebuf</code> move constructor should be
 327       documented here.
 328    </p><p>
 329       <span class="emphasis"><em>28.5.1 [re.synopt]</em></span>,
 330       <span class="emphasis"><em> 28.5.2 [re.matchflag] </em></span>,
 331       <span class="emphasis"><em> 28.5.3 [re.err] </em></span>
 332       <code class="code">syntax_option_type</code>, <code class="code">match_flag_type</code>
 333       and <code class="code">error_type</code> are unscoped enumeration types.
 334    </p><p>
 335       <span class="emphasis"><em>28.7 [re.traits]</em></span>
 336       The <code class="literal">blank</code> character class corresponds to the
 337       <code class="code">ctype_base::blank</code> mask.
 338    </p><p>
 339       <span class="emphasis"><em>29.4 [atomics.lockfree]</em></span>
 340       The values of the <code class="code">ATOMIC_xxx_LOCK_FREE</code> macros depend on
 341       the target and cannot be listed here.
 342    </p><p>
 343       <span class="emphasis"><em>30.2.3 [thread.req.native]/1</em></span>
 344       <code class="classname">native_handle_type</code> and
 345       <code class="methodname">native_handle</code> are provided. The handle types
 346       are defined in terms of the Gthreads abstraction layer, although this
 347       is subject to change at any time. Any use of
 348       <code class="classname">native_handle</code> is inherently non-portable and
 349       not guaranteed to work between major releases of GCC.
 350       </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><code class="classname">thread</code>: The native handle type is
 351             a typedef for <code class="code">__gthread_t</code> i.e. <code class="code">pthread_t</code>
 352             when GCC is configured with the <code class="literal">posix</code> thread
 353             model. The value of the native handle is undefined for a thread
 354             which is not joinable.
 355          </p></li><li class="listitem"><p><code class="classname">mutex</code> and
 356             <code class="classname">timed_mutex</code>:
 357             The native handle type is <code class="code">__gthread_mutex_t*</code> i.e.
 358             <code class="code">pthread_mutex_t*</code> for the <code class="literal">posix</code>
 359             thread model.
 360          </p></li><li class="listitem"><p><code class="classname">recursive_mutex</code> and
 361          <code class="classname">recursive_timed_mutex</code>:
 362             The native handle type is <code class="code">__gthread_recursive_mutex_t*</code>
 363             i.e. <code class="code">pthread_mutex_t*</code> for the <code class="literal">posix</code>
 364             thread model.
 365          </p></li><li class="listitem"><p><code class="classname">condition_variable</code>: The native
 366             handle type is <code class="code">__gthread_cond_t*</code> i.e.
 367             <code class="code">pthread_cond_t*</code> for the <code class="literal">posix</code>
 368             thread model.
 369          </p></li></ul></div><p>
 370    </p><p>
 371       <span class="emphasis"><em>30.6.1 [futures.overview]/2</em></span>
 372       <code class="code">launch</code> is a scoped enumeration type with
 373       overloaded operators to support bitmask operations. There are no
 374       additional bitmask elements defined.
 375    </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2014"></a>C++ 2014</h3></div></div></div><p>
 376 In this implementation the <code class="literal">-std=gnu++14</code> or
 377 <code class="literal">-std=c++14</code> flag must be used to enable language
 378 and library
 379 features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a>
 380 options. The pre-defined symbol
 381 <code class="constant">__cplusplus</code> is used to check for the
 382 presence of the required flag.
 383 </p><p>
 384 This page describes the C++14 and library TS support in mainline GCC SVN,
 385 not in any particular release.
 386 </p><div class="table"><a id="table.cxx14_status"></a><p class="title"><strong>Table 1.3. C++ 2014 Implementation Status</strong></p><div class="table-contents"><table summary="C++ 2014 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Paper</th><th align="left">Title</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left">
 387         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3669.pdf" target="_top">
 388           N3669
 389         </a>
 390       </td><td align="left">Fixing constexpr member functions without const</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 391         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3668.html" target="_top">
 392           N3668
 393         </a>
 394       </td><td align="left"><code class="code">exchange()</code> utility function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 395         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3670.html" target="_top">
 396           N3670
 397         </a>
 398       </td><td align="left">Wording for Addressing Tuples by Type</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 399         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3656.htm" target="_top">
 400           N3656
 401         </a>
 402       </td><td align="left"><code class="code">make_unique</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 403         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2012/n3462.html" target="_top">
 404           N3462
 405         </a>
 406       </td><td align="left"><code class="code">std::result_of</code> and SFINAE</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 407         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3545.pdf" target="_top">
 408           N3545
 409         </a>
 410       </td><td align="left">An Incremental Improvement to <code class="code">integral_constant</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 411         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3642.pdf" target="_top">
 412           N3642
 413         </a>
 414       </td><td align="left">User-defined Literals for Standard Library Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 415         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3671.html" target="_top">
 416           N3671
 417         </a>
 418       </td><td align="left">Making non-modifying sequence operations more robust</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 419         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3654.html" target="_top">
 420           N3654
 421         </a>
 422       </td><td align="left">Quoted Strings Library Proposal</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 423         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2012/n3469.html" target="_top">
 424           N3469
 425         </a>
 426       </td><td align="left">Constexpr Library Additions: chrono</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 427         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2012/n3470.html" target="_top">
 428           N3470
 429         </a>
 430       </td><td align="left">Constexpr Library Additions: containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 431         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2012/n3471.html" target="_top">
 432           N3471
 433         </a>
 434       </td><td align="left">Constexpr Library Additions: utilities</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 435         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3658.html" target="_top">
 436           N3658
 437         </a>
 438       </td><td align="left">Compile-time integer sequences</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 439         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3659.html" target="_top">
 440           N3659
 441         </a>
 442       </td><td align="left">Shared Locking in C++</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 443         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2012/n3421.htm" target="_top">
 444           N3421
 445         </a>
 446       </td><td align="left">Making Operator Functors greater&lt;&gt;</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 447         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3657.htm" target="_top">
 448           N3657
 449         </a>
 450       </td><td align="left">Adding heterogeneous comparison lookup to associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">
 451         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3655.pdf" target="_top">
 452           N3655
 453         </a>
 454       </td><td align="left">TransformationTraits Redux</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">
 455         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3644.pdf" target="_top">
 456           N3644
 457         </a>
 458       </td><td align="left">Null Forward Iterators</td><td align="left">Partial</td><td align="left">Only affects Debug Mode</td></tr></tbody></table></div></div><br class="table-break" /><div class="table"><a id="table.ts_status"></a><p class="title"><strong>Table 1.4. C++ Technical Specifications Implementation Status</strong></p><div class="table-contents"><table summary="C++ Technical Specifications Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Paper</th><th align="left">Title</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr bgcolor="#C8B0B0"><td align="left">
 459         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3662.html" target="_top">
 460           N3662
 461         </a>
 462       </td><td align="left">C++ Dynamic Arrays</td><td align="left">N</td><td align="left">Array Extensions TS</td></tr><tr><td align="left">
 463         <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3793.html" target="_top">
 464           N3793
 465         </a>
 466       </td><td align="left">A proposal to add a utility class to represent optional objects</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 467         <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3804.html" target="_top">
 468           N3804
 469         </a>
 470       </td><td align="left">Any library proposal</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr bgcolor="#C8B0B0"><td align="left">
 471         <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3866.html" target="_top">
 472           N3866
 473         </a>
 474       </td><td align="left">Invocation type traits, but dropping function_call_operator.</td><td align="left">N</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 475         <a class="link" href="" target="_top">
 476           N3905
 477         </a>
 478       </td><td align="left">Faster string searching (Boyer-Moore et al.)</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 479         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3915.pdf" target="_top">
 480           N3915
 481         </a>
 482       </td><td align="left">apply() call a function with arguments from a tuple</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr bgcolor="#B0B0B0"><td align="left">
 483         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3916.pdf" target="_top">
 484           N3916
 485         </a>
 486       </td><td align="left">Polymorphic memory resources</td><td align="left">Partial</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 487         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3920.html" target="_top">
 488           N3920
 489         </a>
 490       </td><td align="left">Extending shared_ptr to support arrays</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 491         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3921.html" target="_top">
 492           N3921
 493         </a>
 494       </td><td align="left"><code class="code">string_view</code>: a non-owning reference to a string</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 495         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3925.pdf" target="_top">
 496           N3925
 497         </a>
 498       </td><td align="left">A sample proposal</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 499         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3932.htm" target="_top">
 500           N3932
 501         </a>
 502       </td><td align="left">Variable Templates For Type Traits</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left">
 503         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf" target="_top">
 504           N4100
 505         </a>
 506       </td><td align="left">File System</td><td align="left">Y</td><td align="left">
 507         Link with
 508         <a class="link" href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental" title="Experimental Library Extensions">
 509         <code class="option">-lstdc++fs</code></a>
 510       </td></tr></tbody></table></div></div><br class="table-break" /></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.201z"></a>C++ 201z</h3></div></div></div><p>
 511 In this implementation the <code class="literal">-std=gnu++1z</code> or
 512 <code class="literal">-std=c++1z</code> flag must be used to enable language
 513 and library
 514 features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a>
 515 options. The pre-defined symbol
 516 <code class="constant">__cplusplus</code> is used to check for the
 517 presence of the required flag.
 518 </p><p>
 519 This section describes the C++1z and library TS support in mainline GCC SVN,
 520 not in any particular release.
 521 </p><p>
 522 The following table lists new library features that have been accepted into
 523 the C++1z working draft. The "Proposal" column provides a link to the
 524 ISO C++ committee proposal that describes the feature, while the "Status"
 525 column indicates the first version of GCC that contains an implementation of
 526 this feature (if it has been implemented).
 527 The "SD-6 Feature Test" column shows the corresponding macro or header from
 528 <a class="link" href="https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations" target="_top">SD-6:
 529 Feature-testing recommendations for C++</a>.
 530 </p><div class="table"><a id="table.cxx1z_status"></a><p class="title"><strong>Table 1.5. C++ 201z Implementation Status</strong></p><div class="table-contents"><table summary="C++ 201z Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Library Feature</th><th align="left">Proposal</th><th align="left">Status</th><th align="left">SD-6 Feature Test</th></tr></thead><tbody><tr bgcolor="#C8B0B0"><td align="left">
 531         <code class="code">constexpr std::hardware_{constructive,destructive}_interference_size</code>
 532       </td><td align="left">
 533         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html" target="_top">
 534         P0154R1
 535         </a>
 536       </td><td align="center"> No </td><td align="left"> <code class="code">__cpp_lib_hardware_interference_size &gt;= 201603</code> </td></tr><tr><td align="left"> Core Issue 1776: Replacement of class objects containing reference members</td><td align="left">
 537         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0137r1.html" target="_top">
 538         P0137R1
 539         </a>
 540       </td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_launder &gt;= 201606</code> </td></tr><tr><td align="left">Wording for <code class="code">std::uncaught_exceptions</code></td><td align="left">
 541         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2014/n4259.pdf" target="_top">
 542           N4259
 543         </a>
 544       </td><td align="center">6.1</td><td align="left"><code class="code">__cpp_lib_uncaught_exceptions &gt;= 201411</code></td></tr><tr><td align="left"> Variant: a type-safe union for C++17 </td><td align="left">
 545         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0088r3.html" target="_top">
 546         P0088R3
 547         </a>
 548       </td><td align="center"> 7 </td><td align="left"> <code class="code">__has_include(&lt;variant&gt;)</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">optional</code> </td><td align="left">
 549         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 550         P0220R1
 551         </a>
 552       </td><td align="center"> 7 </td><td align="left"> <code class="code">__has_include(&lt;optional&gt;)</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">any</code> </td><td align="left">
 553         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 554         P0220R1
 555         </a>
 556       </td><td align="center"> 7 </td><td align="left"> <code class="code">__has_include(&lt;any&gt;)</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">string_view</code> </td><td align="left">
 557         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 558         P0220R1
 559         </a>
 560       </td><td align="center"> 7 </td><td align="left"> <code class="code">__has_include(&lt;string_view&gt;)</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Library Fundamentals V1 TS Components: <code class="code">memory_resource</code> </td><td align="left">
 561         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 562         P0220R1
 563         </a>
 564       </td><td align="center"> No </td><td align="left"> <code class="code">__has_include(&lt;memory_resource&gt;)</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">apply</code> </td><td align="left">
 565         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 566         P0220R1
 567         </a>
 568       </td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_apply &gt;= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">shared_ptr&lt;T[]&gt;</code> </td><td align="left">
 569         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 570         P0220R1
 571         </a>
 572       </td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_shared_ptr_arrays &gt;= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Searchers </td><td align="left">
 573         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 574         P0220R1
 575         </a>
 576       </td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_boyer_moore_searcher &gt;= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Sampling </td><td align="left">
 577         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
 578         P0220R1
 579         </a>
 580       </td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_sample &gt;= 201603</code> </td></tr><tr><td align="left"> Constant View: A proposal for a <code class="code">std::as_const</code> helper function template        </td><td align="left">
 581         <a class="link" href="" target="_top">
 582         P0007R1
 583         </a>
 584       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_as_const &gt;= 201510 </code></td></tr><tr><td align="left"> Improving pair and tuple </td><td align="left">
 585         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4387" target="_top">
 586         N4387
 587         </a>
 588       </td><td align="center"> 6.1 </td><td align="left"> N/A </td></tr><tr><td align="left"> <code class="code">make_from_tuple</code>: apply for construction </td><td align="left">
 589         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0209r2.pdf" target="_top">
 590         P0209R2
 591         </a>
 592       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_make_from_tuple &gt;= 201606 </code></td></tr><tr bgcolor="#C8B0B0"><td align="left">
 593         Removing <code class="code">auto_ptr</code>, <code class="code">random_shuffle()</code>,
 594         And Old <code class="code">&lt;functional&gt;</code> Stuff
 595       </td><td align="left">
 596         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4190.htm" target="_top">
 597           N4190
 598         </a>
 599       </td><td align="center">No (kept for backwards compatibility)</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Deprecating Vestigial Library Parts in C++17 </td><td align="left">
 600         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0174r2.html" target="_top">
 601         P0174R2
 602         </a>
 603       </td><td align="center"> No </td><td align="left"> </td></tr><tr><td align="left"> Making <code class="code">std::owner_less</code> more flexible </td><td align="left">
 604         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0074r0.html" target="_top">
 605         P0074R0
 606         </a>
 607       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_transparent_operators &gt;= 201510 </code></td></tr><tr><td align="left"> <code class="code">std::addressof</code> should be constexpr </td><td align="left">
 608         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0304r0.html#2296" target="_top">
 609         LWG2296
 610         </a>
 611       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_addressof_constexpr &gt;= 201603 </code></td></tr><tr><td align="left"> Safe conversions in <code class="code">unique_ptr&lt;T[]&gt;</code> </td><td align="left">
 612         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4089.pdf" target="_top">
 613         N4089
 614         </a>
 615       </td><td align="center"> 6 </td><td align="left"> </td></tr><tr><td align="left"> LWG 2228: Missing SFINAE rule in unique_ptr templated assignment </td><td align="left">
 616         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4366.html" target="_top">
 617           N4366
 618         </a>
 619       </td><td align="center"> 6 </td><td align="left"> </td></tr><tr><td align="left"> Re-enabling <code class="code">shared_from_this</code></td><td align="left">
 620         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0033r1.html" target="_top">
 621         P0033R1
 622         </a>
 623       </td><td align="center"> 7 </td><td align="left"><code class="code">__cpp_lib_enable_shared_from_this &gt;= 201603</code></td></tr><tr><td align="left"> A proposal to add <code class="code">invoke</code> function template </td><td align="left">
 624         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4169.html" target="_top">
 625         N4169
 626         </a>
 627       </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_invoke &gt;= 201411 </code></td></tr><tr><td align="left">TriviallyCopyable <code class="code">reference_wrapper</code> </td><td align="left">
 628         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4277.html" target="_top">
 629           N4277
 630         </a>
 631       </td><td align="center"> 5.1 </td><td align="left"> </td></tr><tr><td align="left"> Adopt <code class="code">not_fn</code> from Library Fundamentals 2 for C++17 </td><td align="left">
 632         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0005r4.html" target="_top">
 633         P0005R4
 634         </a>
 635       </td><td align="center"> 7 </td><td align="left"><code class="code">__cpp_lib_not_fn &gt;= 201603</code></td></tr><tr><td align="left"> Fixes for <code class="code">not_fn</code> </td><td align="left">
 636         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0358r1.html" target="_top">
 637         P0358R1
 638         </a>
 639       </td><td align="center"> 7 </td><td align="left"> </td></tr><tr><td align="left"> Fixing a design mistake in the searchers interface in Library Fundamentals </td><td align="left">
 640         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0253r1.pdf" target="_top">
 641         P0253R1
 642         </a>
 643       </td><td align="center"> 7 </td><td align="left"> </td></tr><tr><td align="left"> Extending memory management tools </td><td align="left">
 644         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0040r3.html" target="_top">
 645         P0040R3
 646         </a>
 647       </td><td align="center"> 7 </td><td align="left"><code class="code"> </code></td></tr><tr><td align="left"> <code class="code">shared_ptr::weak_type</code></td><td align="left">
 648         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0163r0.html" target="_top">
 649         P0163R0
 650         </a>
 651       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_shared_ptr_weak_type &gt;= 201606</code></td></tr><tr><td align="left">Transformation Trait Alias <code class="code">void_t</code></td><td align="left">
 652         <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2014/n3911.pdf" target="_top">
 653           N3911
 654         </a>
 655       </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_void_t &gt;= 201411</code></td></tr><tr><td align="left"> Wording for <code class="code">bool_constant</code>, revision 1 </td><td align="left">
 656         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4389.html" target="_top">
 657           N4389
 658         </a>
 659       </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_bool_constant &gt;= 201505</code></td></tr><tr><td align="left"> Adopt Type Traits Variable Templates from Library Fundamentals TS for C++17</td><td align="left">
 660         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0006r0.html" target="_top">
 661         P0006R0
 662         </a>
 663       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_type_trait_variable_templates &gt;= 201510 </code></td></tr><tr><td align="left"> Logical Operator Type Traits</td><td align="left">
 664         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0013r1.html" target="_top">
 665         P0013R1
 666         </a>
 667       </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_logical_traits &gt;= 201510 </code></td></tr><tr><td align="left"> Adding [nothrow-]swappable traits </td><td align="left">
 668         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0185r1.html" target="_top">
 669         P0185R1
 670         </a>
 671       </td><td align="center"> 7 (<code class="code">__is_swappable</code> available since 6.1)</td><td align="left"><code class="code"> __cpp_lib_is_swappable &gt;= 201603 </code></td></tr><tr><td align="left"> <code class="code">is_callable</code>, the missing INVOKE related trait</td><td align="left">
 672         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0077r2.html" target="_top">
 673         P0077R2
 674         </a>
 675       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_is_callable &gt;= 201603 </code></td></tr><tr><td align="left"> has_unique_object_representations </td><td align="left">
 676         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0258r2.html" target="_top">
 677         P0258R2
 678         </a>
 679       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_has_unique_object_representations &gt;= 201606 </code></td></tr><tr><td align="left"> Polishing <code class="code">&lt;chrono&gt;</code> </td><td align="left">
 680         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0092r1.html" target="_top">
 681         P0092R1
 682         </a>
 683       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_chrono &gt;= 201510 </code></td></tr><tr><td align="left"> Adding more constexpr to <code class="code">&lt;chrono&gt;</code> </td><td align="left">
 684         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0505r0.html" target="_top">
 685         P0505R0
 686         </a>
 687       </td><td align="center"> 7 </td><td align="left"><code class="code"> ??? </code></td></tr><tr bgcolor="#B0B0B0"><td align="left"> Constexpr for <code class="code">std::char_traits</code> </td><td align="left">
 688         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0426r1.html" target="_top">
 689         P0426R1
 690         </a>
 691       </td><td align="center"> 7 (partial) </td><td align="left"><code class="code"> ??? </code></td></tr><tr><td align="left"> Integrating <code class="code">std::string_view</code> and <code class="code">std::string</code> </td><td align="left">
 692         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0254r2.pdf" target="_top">
 693         P0254R2
 694         </a>
 695       </td><td align="center"> 7 </td><td align="left"><code class="code"> </code></td></tr><tr><td align="left"> Give 'std::string' a non-const '.data()' member function </td><td align="left">
 696         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0272r1.html" target="_top">
 697         P0272R1
 698         </a>
 699       </td><td align="center"> 7 </td><td align="left"><code class="code"> </code></td></tr><tr><td align="left">Cleaning-up noexcept in the Library</td><td align="left">
 700         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4258.pdf" target="_top">
 701           N4258
 702         </a>
 703       </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_allocator_traits_is_always_equal &gt;= 201411 </code></td></tr><tr><td align="left">Contiguous Iterators </td><td align="left">
 704         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4284.html" target="_top">
 705           N4284
 706         </a>
 707       </td><td align="center">N/A</td><td align="left"> </td></tr><tr><td align="left"> Minimal incomplete type support for standard containers </td><td align="left">
 708         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4510.html" target="_top">
 709         N4510
 710         </a>
 711       </td><td align="center"> 6.2 (3.0)</td><td align="left"><code class="code"> __cpp_lib_incomplete_container_elements &gt;= 201505 </code>
 712              (the feature was always supported, but the macro was not defined until GCC 6.2)
 713       </td></tr><tr><td align="left"> Emplace return type </td><td align="left">
 714         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0084r2.pdf" target="_top">
 715         P0084R2
 716         </a>
 717       </td><td align="center"> 7 </td><td align="left"><code class="code"> ??? </code></td></tr><tr><td align="left">Improved insertion interface for unique-key maps</td><td align="left">
 718         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4279.html" target="_top">
 719           N4279
 720         </a>
 721       </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_map_try_emplace &gt;= 201411</code>,
 722              <code class="code"> __cpp_lib_unordered_map_try_emplace &gt;= 201411</code>
 723       </td></tr><tr><td align="left"> Splicing Maps and Sets </td><td align="left">
 724         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0083r3.pdf" target="_top">
 725         P0083R3
 726         </a>
 727       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_node_extract &gt;= 201606 </code></td></tr><tr><td align="left">Non-member <code class="code">size()</code> and more</td><td align="left">
 728         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4280.pdf" target="_top">
 729           N4280
 730         </a>
 731       </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_nonmember_container_access &gt;= 201411 </code></td></tr><tr><td align="left"> A Proposal to Add Constexpr Modifiers to <code class="code">reverse_iterator</code>, <code class="code">move_iterator</code>, <code class="code">array</code> and Range Access </td><td align="left">
 732         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0031r0.html" target="_top">
 733         P0031R0
 734         </a>
 735       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_array_constexpr &gt;= 201603 </code></td></tr><tr bgcolor="#C8B0B0"><td align="left"> The Parallelism TS Should be Standardized     </td><td align="left">
 736         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0024r2.html" target="_top">
 737         P0024R2
 738         </a>
 739       </td><td align="center"> No </td><td align="left"><code class="code"> __has_include(&lt;execution&gt;) </code>,
 740              <code class="code"> __cpp_lib_parallel_algorithm &gt;= 201603 </code></td></tr><tr><td align="left"> An algorithm to "clamp" a value between a pair of boundary values </td><td align="left">
 741         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0025r0.html" target="_top">
 742         P0025R0
 743         </a>
 744       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_clamp &gt;= 201603 </code></td></tr><tr><td align="left"> Adopt Selected Library Fundamentals V2 Components for C++17 </td><td align="left">
 745         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0295r0.pdf" target="_top">
 746         P0295R0
 747         </a>
 748       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_gcd &gt;= 201606 </code>,
 749              <code class="code"> __cpp_lib_lcm &gt;= 201606 </code>
 750       </td></tr><tr><td align="left"> Proposal to Introduce a 3-Argument Overload to <code class="code">std::hypot</code> </td><td align="left">
 751         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0030r1.pdf" target="_top">
 752         P0030R1
 753         </a>
 754       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_hypot &gt;= 201603 </code></td></tr><tr><td align="left"> Mathematical Special Functions for C++17 </td><td align="left">
 755         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0226r1.pdf" target="_top">
 756         P0226R1
 757         </a>
 758       </td><td align="center"> 7 (6.1) </td><td align="left"><code class="code"> __cpp_lib_math_special_functions &gt;= 201603 </code>
 759              (for GCC 6 or pre-C++17 define
 760              <code class="code">__STDCPP_WANT_MATH_SPEC_FUNCS__</code> to a non-zero value
 761              and test for <code class="code">__STDCPP_MATH_SPEC_FUNCS__ &gt;= 201003L</code>)
 762       </td></tr><tr bgcolor="#C8B0B0"><td align="left">Adopt the File System TS for C++17        </td><td align="left">
 763         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0218r1.html" target="_top">
 764         P0218R1
 765         </a>
 766       </td><td align="center"> No </td><td align="left"><code class="code"> __has_include(&lt;filesystem&gt;) </code>,
 767              <code class="code"> __cpp_lib_filesystem &gt;= 201603 </code></td></tr><tr bgcolor="#C8B0B0"><td align="left"> Relative Paths for Filesystem</td><td align="left">
 768         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0219r1.html" target="_top">
 769         P0219R1
 770         </a>
 771       </td><td align="center"> No </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Adapting string_view by filesystem paths </td><td align="left">
 772         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0392r0.pdf" target="_top">
 773         P0392R0
 774         </a>
 775       </td><td align="center"> No </td><td align="left"> </td></tr><tr><td align="left"> constexpr <code class="code">atomic&lt;T&gt;::is_always_lock_free</code>       </td><td align="left">
 776         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0152r1.html" target="_top">
 777         P0152R1
 778         </a>
 779       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_atomic_is_always_lock_free &gt;= 201603 </code></td></tr><tr><td align="left">A proposal to add <code class="code">shared_mutex</code> (untimed) (Revision 4)</td><td align="left">
 780         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4508.html" target="_top">
 781           N4508
 782         </a>
 783       </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_shared_mutex &gt;= 201505 </code></td></tr><tr><td align="left"> Variadic <code class="code">lock_guard</code> </td><td align="left">
 784         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0156r2.html" target="_top">
 785         P0156R2
 786         </a>
 787       </td><td align="center"> 7 </td><td align="left"><code class="code"> __cpp_lib_scoped_lock &gt;= 201703 </code></td></tr><tr><td align="left"> byte type definition </td><td align="left">
 788         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0298r3.pdf" target="_top">
 789         P0298R3
 790         </a>
 791       </td><td align="center"> 7 </td><td align="left"><code class="code"> ??? </code></td></tr><tr bgcolor="#C8B0B0"><td align="left"> Elementary string conversions </td><td align="left">
 792         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0067r5.html" target="_top">
 793         P0067R5
 794         </a>
 795       </td><td align="center"> No </td><td align="left"><code class="code"> ??? </code></td></tr></tbody></table></div></div><br class="table-break" /><div class="table"><a id="table.cxx1z_ts_status"></a><p class="title"><strong>Table 1.6. C++ Technical Specifications Implementation Status</strong></p><div class="table-contents"><table summary="C++ Technical Specifications Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Paper</th><th align="left">Title</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left">
 796         <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4076.html" target="_top">
 797           N4076
 798         </a>
 799       </td><td align="left">A generalized callable negator</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 800         <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4273.htm" target="_top">
 801           N4273
 802         </a>
 803       </td><td align="left">Uniform Container Erasure</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 804         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4061.pdf" target="_top">
 805           N4061
 806         </a>
 807       </td><td align="left">Greatest Common Divisor and Least Common Multiple</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 808         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4066.htm" target="_top">
 809           N4066
 810         </a>
 811       </td><td align="left">Delimited iterators</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 812         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4282.pdf" target="_top">
 813           N4282
 814         </a>
 815       </td><td align="left">The World's Dumbest Smart Pointer</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 816         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4388.html" target="_top">
 817           N4388
 818         </a>
 819       </td><td align="left">Const-Propagating Wrapper</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 820         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4391.html" target="_top">
 821           N4391
 822         </a>
 823       </td><td align="left"> <code class="code">make_array</code>, revision 4 </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 824         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4502.pdf" target="_top">
 825           N4502
 826         </a>
 827       </td><td align="left"> Support for the C++ Detection Idiom, V2 </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 828         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4519.pdf" target="_top">
 829           N4519
 830         </a>
 831       </td><td align="left"> Source-Code Information Capture </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr bgcolor="#C8B0B0"><td align="left">
 832         <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4521.html" target="_top">
 833           N4521
 834         </a>
 835       </td><td align="left"> Merge Fundamentals V1 into V2 </td><td align="left">N</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left">
 836         <a class="link" href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2015/p0013r1.html" target="_top">
 837           P0013R1
 838         </a>
 839       </td><td align="left">Logical Operator Type Traits (revision 1)</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.2017.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is also specified by previous standards,
 840       see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation
 841       Specific Behavior</a> and <a class="link" href="status.html#iso.2011.specific" title="Implementation Specific Behavior">C++
 842       2011 Implementation Specific Behavior</a>. This section only
 843       documents behaviour which is new in the 2017 standard.
 844    </p><p>
 845       <span class="emphasis"><em>20.6.5 [optional.bad_optional_access]</em></span>
 846       <code class="code">what()</code> returns <code class="literal">"bad optional access"</code>.
 847    </p><p>
 848       <span class="emphasis"><em>20.7.2 [variant.variant]</em></span>
 849       Whether <code class="classname">variant</code> supports over-aligned types
 850       should be documented here.
 851    </p><p>
 852       <span class="emphasis"><em>20.7.10 [variant.bad.access]</em></span>
 853       <code class="code">what()</code> returns <code class="literal">"Unexpected index"</code>.
 854    </p><p>
 855       <span class="emphasis"><em>20.12.5.2 [memory.resource.pool.options]</em></span>
 856       The limits for maximum number of blocks and largest allocation size
 857       supported by <code class="classname">pool_options</code> should be documented
 858       here.
 859    </p><p>
 860       <span class="emphasis"><em>20.12.6.1 [memory.resource.monotonic.buffer.ctor]</em></span>
 861       The default <code class="code">next_buffer_size</code> and growth factor should
 862       be documented here.
 863    </p><p>
 864       <span class="emphasis"><em>20.15.4.3 [meta.unary.prop]</em></span>
 865       The predicate condition for
 866       <code class="code">has_unique_object_representations</code> is true for all scalar
 867       types except floating point types.
 868    </p><p>
 869       <span class="emphasis"><em>20.19.3 [execpol.type],
 870       25.2.3 [algorithms.parallel.exec]</em></span>
 871       There are no implementation-defined execution policies.
 872    </p><p>
 873       <span class="emphasis"><em>22.4.2 [string.view.template]</em></span>
 874       <code class="classname">basic_string_view&lt;C, T&gt;::iterator</code> is
 875       <code class="code">C*</code> and
 876       <code class="classname">basic_string_view&lt;C, T&gt;::const_iterator</code> is
 877       <code class="code">const C*</code>.
 878    </p><p>
 879       <span class="emphasis"><em>25.2.3 [algorithms.parallel.exec]</em></span>
 880       Threads of execution created by <code class="classname">std::thread</code>
 881       provide concurrent forward progress guarantees, so threads of execution
 882       implicitly created by the library will provide parallel forward
 883       progress guarantees.
 884    </p><p>
 885       <span class="emphasis"><em>26.4.1 [cfenv.syn]</em></span>
 886       The effects of the <code class="filename">&lt;cfenv&gt;</code> functions
 887       depends on whether the <code class="code">FENV_ACCESS</code> pragma is supported,
 888       and on the C library that provides the header.
 889    </p><p>
 890       <span class="emphasis"><em>26.6.9 [c.math.rand]</em></span>
 891       Whether the <code class="function">rand</code> function may introduce data
 892       races depends on the target C library that provides the function.
 893    </p><p>
 894       <span class="emphasis"><em>26.9.5 [sf.cmath]</em></span>
 895       The effect of calling the mathematical special functions with large
 896       inputs should be documented here.
 897    </p><p>
 898       <span class="emphasis"><em>27.10.2.1 [fs.conform.9945]</em></span>
 899       The behavior of the filesystem library implementation will depend on
 900       the target operating system. Some features will not be not supported
 901       on some targets.
 902    </p><p>
 903       <span class="emphasis"><em>27.10.6 [fs.filesystem.syn]</em></span>
 904       The clock used for file times is
 905       <code class="classname">std::chrono::system_clock</code>.
 906    </p><p>
 907       <span class="emphasis"><em>27.10.8 [path.generic]</em></span>
 908       dot-dot in the root-directory refers to the root-directory itself.
 909    </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.tr1"></a>C++ TR1</h3></div></div></div><p>
 910 This table is based on the table of contents of ISO/IEC DTR 19768
 911 Doc No: N1836=05-0096 Date: 2005-06-24
 912 Draft Technical Report on C++ Library Extensions
 913 </p><p>
 914 In this implementation the header names are prefixed by
 915 <code class="code">tr1/</code>, for instance <code class="code">&lt;tr1/functional&gt;</code>,
 916 <code class="code">&lt;tr1/memory&gt;</code>, and so on.
 917 </p><p>
 918 This page describes the TR1 support in mainline GCC SVN, not in any particular
 919 release.
 920 </p><div class="table"><a id="table.tr1_status"></a><p class="title"><strong>Table 1.7. C++ TR1 Implementation Status</strong></p><div class="table-contents"><table summary="C++ TR1 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"><span class="emphasis"><em>2</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>General Utilities</em></span></td></tr><tr><td align="left">2.1</td><td align="left">Reference wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.1.1</td><td align="left">Additions to header <code class="code">&lt;functional&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.1.2.1</td><td align="left"><code class="code">reference_wrapper</code> construct/copy/destroy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.2</td><td align="left"><code class="code">reference_wrapper</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.3</td><td align="left"><code class="code">reference_wrapper</code> access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.4</td><td align="left"><code class="code">reference_wrapper</code> invocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.5</td><td align="left"><code class="code">reference_wrapper</code> helper functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.2.1</td><td align="left">Additions to header <code class="code">&lt;memory&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.2</td><td align="left">Class <code class="code">bad_weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3</td><td align="left">Class template <code class="code">shared_ptr</code></td><td align="left"> </td><td align="left">
 921         <p>
 922           Uses code from
 923           <a class="link" href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">boost::shared_ptr</a>.
 924         </p>
 925       </td></tr><tr><td align="left">2.2.3.1</td><td align="left"><code class="code">shared_ptr</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.2</td><td align="left"><code class="code">shared_ptr</code> destructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.3</td><td align="left"><code class="code">shared_ptr</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.4</td><td align="left"><code class="code">shared_ptr</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.5</td><td align="left"><code class="code">shared_ptr</code> observers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.6</td><td align="left"><code class="code">shared_ptr</code> comparison</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.7</td><td align="left"><code class="code">shared_ptr</code> I/O</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.8</td><td align="left"><code class="code">shared_ptr</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.9</td><td align="left"><code class="code">shared_ptr</code> casts</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.10</td><td align="left"><code class="code">get_deleter</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4</td><td align="left">Class template <code class="code">weak_ptr</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.2.4.1</td><td align="left"><code class="code">weak_ptr</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.2</td><td align="left"><code class="code">weak_ptr</code> destructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.3</td><td align="left"><code class="code">weak_ptr</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.4</td><td align="left"><code class="code">weak_ptr</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.5</td><td align="left"><code class="code">weak_ptr</code> observers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.6</td><td align="left"><code class="code">weak_ptr</code> comparison</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.7</td><td align="left"><code class="code">weak_ptr</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.5</td><td align="left">Class template <code class="code">enable_shared_from_this</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>3</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Function Objects</em></span></td></tr><tr><td align="left">3.1</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2</td><td align="left">Additions to <code class="code">&lt;functional&gt; synopsis</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4</td><td align="left">Function return types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.5</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6</td><td align="left">Function object binders</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.6.1</td><td align="left">Class template <code class="code">is_bind_expression</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.2</td><td align="left">Class template <code class="code">is_placeholder</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.3</td><td align="left">Function template <code class="code">bind</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.4</td><td align="left">Placeholders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7</td><td align="left">Polymorphic function wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.7.1</td><td align="left">Class <code class="code">bad_function_call</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.1.1</td><td align="left"><code class="code">bad_function_call</code> constructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2</td><td align="left">Class template <code class="code">function</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.7.2.1</td><td align="left"><code class="code">function</code> construct/copy/destroy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.2</td><td align="left"><code class="code">function</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.3</td><td align="left"><code class="code">function</code> capacity</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.4</td><td align="left"><code class="code">function</code> invocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.5</td><td align="left"><code class="code">function</code> target access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.6</td><td align="left">undefined operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.7</td><td align="left">null pointer comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.8</td><td align="left">specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>4</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Metaprogramming and type traits</em></span></td></tr><tr><td align="left">4.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.2</td><td align="left">Header <code class="code">&lt;type_traits&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.4</td><td align="left">General Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5</td><td align="left">Unary Type Traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">4.5.1</td><td align="left">Primary Type Categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5.2</td><td align="left">Composite type traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5.3</td><td align="left">Type properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7</td><td align="left">Transformations between types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">4.7.1</td><td align="left">Const-volatile modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.2</td><td align="left">Reference modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.3</td><td align="left">Array modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.4</td><td align="left">Pointer modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.8</td><td align="left">Other transformations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.9</td><td align="left">Implementation requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>5</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Numerical Facilities</em></span></td></tr><tr><td align="left">5.1</td><td align="left">Random number generation</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">5.1.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.2</td><td align="left">Header <code class="code">&lt;random&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.3</td><td align="left">Class template <code class="code">variate_generator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4</td><td align="left">Random number engine class templates</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.1</td><td align="left">Class template <code class="code">linear_congruential</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.2</td><td align="left">Class template <code class="code">mersenne_twister</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.3</td><td align="left">Class template <code class="code">subtract_with_carry</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.4</td><td align="left">Class template <code class="code">subtract_with_carry_01</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.5</td><td align="left">Class template <code class="code">discard_block</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.6</td><td align="left">Class template <code class="code">xor_combine</code></td><td align="left">Y</td><td align="left">operator()() per N2079</td></tr><tr><td align="left">5.1.5</td><td align="left">Engines with predefined parameters</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.6</td><td align="left">Class <code class="code">random_device</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7</td><td align="left">Random distribution class templates</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.1</td><td align="left">Class template <code class="code">uniform_int</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.2</td><td align="left">Class <code class="code">bernoulli_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.3</td><td align="left">Class template <code class="code">geometric_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.4</td><td align="left">Class template <code class="code">poisson_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.5</td><td align="left">Class template <code class="code">binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.6</td><td align="left">Class template <code class="code">uniform_real</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.7</td><td align="left">Class template <code class="code">exponential_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.8</td><td align="left">Class template <code class="code">normal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.9</td><td align="left">Class template <code class="code">gamma_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2</td><td align="left">Mathematical special functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1</td><td align="left">Additions to header <code class="code">&lt;cmath&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.1</td><td align="left">associated Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.2</td><td align="left">associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.3</td><td align="left">beta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.4</td><td align="left">(complete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.5</td><td align="left">(complete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.6</td><td align="left">(complete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.7</td><td align="left">confluent hypergeometric functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.8</td><td align="left">regular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.9</td><td align="left">cylindrical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.10</td><td align="left">irregular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.11</td><td align="left">cylindrical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.12</td><td align="left">(incomplete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.13</td><td align="left">(incomplete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.14</td><td align="left">(incomplete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.15</td><td align="left">exponential integral</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.16</td><td align="left">Hermite polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.17</td><td align="left">hypergeometric functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.18</td><td align="left">Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.19</td><td align="left">Legendre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.20</td><td align="left">Riemann zeta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.21</td><td align="left">spherical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.22</td><td align="left">spherical associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.23</td><td align="left">spherical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.2</td><td align="left">Additions to header <code class="code">&lt;math.h&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>6</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Containers</em></span></td></tr><tr><td align="left">6.1</td><td align="left">Tuple types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.1</td><td align="left">Header <code class="code">&lt;tuple&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.2</td><td align="left">Additions to header <code class="code">&lt;utility&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3</td><td align="left">Class template <code class="code">tuple</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.1</td><td align="left">Construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.2</td><td align="left">Tuple creation functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.3</td><td align="left">Tuple helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.4</td><td align="left">Element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.5</td><td align="left">Relational operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.4</td><td align="left">Pairs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2</td><td align="left">Fixed size array</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.1</td><td align="left">Header <code class="code">&lt;array&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2</td><td align="left">Class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.1</td><td align="left"><code class="code">array</code> constructors, copy, and assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.2</td><td align="left"><code class="code">array</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.3</td><td align="left"><code class="code">array</code> size</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.4</td><td align="left">Zero sized <code class="code">array</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.5</td><td align="left">Tuple interface to class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.1</td><td align="left">Unordered associative container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.1.1</td><td align="left">Exception safety guarantees</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.2</td><td align="left">Additions to header <code class="code">&lt;functional&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.3</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4</td><td align="left">Unordered associative container classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.1</td><td align="left">Header <code class="code">&lt;unordered_set&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.2</td><td align="left">Header <code class="code">&lt;unordered_map&gt;</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3</td><td align="left">Class template <code class="code">unordered_set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3.1</td><td align="left"><code class="code">unordered_set</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3.2</td><td align="left"><code class="code">unordered_set</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4</td><td align="left">Class template <code class="code">unordered_map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.1</td><td align="left"><code class="code">unordered_map</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.2</td><td align="left"><code class="code">unordered_map</code> element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.3</td><td align="left"><code class="code">unordered_map</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5</td><td align="left">Class template <code class="code">unordered_multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5.1</td><td align="left"><code class="code">unordered_multiset</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5.2</td><td align="left"><code class="code">unordered_multiset</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6</td><td align="left">Class template <code class="code">unordered_multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6.1</td><td align="left"><code class="code">unordered_multimap</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6.2</td><td align="left"><code class="code">unordered_multimap</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>7</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Regular Expressions</em></span></td></tr><tr bgcolor="#C8B0B0"><td align="left">7.1</td><td align="left">Definitions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.2</td><td align="left">Requirements</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.3</td><td align="left">Regular expressions summary</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.4</td><td align="left">Header <code class="code">&lt;regex&gt;</code> synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5</td><td align="left">Namespace <code class="code">tr1::regex_constants</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.1</td><td align="left">Bitmask Type <code class="code">syntax_option_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.2</td><td align="left">Bitmask Type <code class="code">regex_constants::match_flag_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.3</td><td align="left">Implementation defined <code class="code">error_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.1</td><td align="left"><code class="code">basic_regex</code> constants</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.2</td><td align="left"><code class="code">basic_regex</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.3</td><td align="left"><code class="code">basic_regex</code> assign</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.4</td><td align="left"><code class="code">basic_regex</code> constant operations</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.5</td><td align="left"><code class="code">basic_regex</code> locale</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.6</td><td align="left"><code class="code">basic_regex</code> swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.7</td><td align="left"><code class="code">basic_regex</code> non-member functions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.7.1</td><td align="left"><code class="code">basic_regex</code> non-member swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9.1</td><td align="left"><code class="code">sub_match</code> members</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9.2</td><td align="left"><code class="code">sub_match</code> non-member operators</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.1</td><td align="left"><code class="code">match_results</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.2</td><td align="left"><code class="code">match_results</code> size</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.3</td><td align="left"><code class="code">match_results</code> element access</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.4</td><td align="left"><code class="code">match_results</code> formatting</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.5</td><td align="left"><code class="code">match_results</code> allocator</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.6</td><td align="left"><code class="code">match_results</code> swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11</td><td align="left">Regular expression algorithms</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.1</td><td align="left">exceptions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.2</td><td align="left"><code class="code">regex_match</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.3</td><td align="left"><code class="code">regex_search</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.4</td><td align="left"><code class="code">regex_replace</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12</td><td align="left">Regular expression Iterators</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1</td><td align="left">Class template <code class="code">regex_iterator</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.1</td><td align="left"><code class="code">regex_iterator</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.2</td><td align="left"><code class="code">regex_iterator</code> comparisons</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.3</td><td align="left"><code class="code">regex_iterator</code> dereference</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.4</td><td align="left"><code class="code">regex_iterator</code> increment</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2</td><td align="left">Class template <code class="code">regex_token_iterator</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.1</td><td align="left"><code class="code">regex_token_iterator</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.2</td><td align="left"><code class="code">regex_token_iterator</code> comparisons</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.3</td><td align="left"><code class="code">regex_token_iterator</code> dereference</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.4</td><td align="left"><code class="code">regex_token_iterator</code> increment</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>8</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>C Compatibility</em></span></td></tr><tr><td align="left">8.1</td><td align="left">Additions to header <code class="code">&lt;complex&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.2</td><td align="left">Function <code class="code">acos</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.3</td><td align="left">Function <code class="code">asin</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.4</td><td align="left">Function <code class="code">atan</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.5</td><td align="left">Function <code class="code">acosh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.6</td><td align="left">Function <code class="code">asinh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.7</td><td align="left">Function <code class="code">atanh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.8</td><td align="left">Function <code class="code">fabs</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.9</td><td align="left">Additional Overloads</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.2</td><td align="left">Header <code class="code">&lt;ccomplex&gt;</code></td><td align="left">N</td><td align="left">DR 551</td></tr><tr bgcolor="#C8B0B0"><td align="left">8.3</td><td align="left">Header <code class="code">&lt;complex.h&gt;</code></td><td align="left">N</td><td align="left">DR 551</td></tr><tr><td align="left">8.4</td><td align="left">Additions to header <code class="code">&lt;cctype&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.4.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.4.2</td><td align="left">Function <code class="code">isblank</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.5</td><td align="left">Additions to header <code class="code">&lt;ctype.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6</td><td align="left">Header <code class="code">&lt;cfenv&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.7</td><td align="left">Header <code class="code">&lt;fenv.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.8</td><td align="left">Additions to header <code class="code">&lt;cfloat&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.9</td><td align="left">Additions to header <code class="code">&lt;float.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10</td><td align="left">Additions to header <code class="code">&lt;ios&gt;</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10.1</td><td align="left">Synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10.2</td><td align="left">Function <code class="code">hexfloat</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">8.11</td><td align="left">Header <code class="code">&lt;cinttypes&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.11.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left">DR 557</td></tr><tr><td align="left">8.11.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.12</td><td align="left">Header <code class="code">&lt;inttypes.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.13</td><td align="left">Additions to header <code class="code">&lt;climits&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.14</td><td align="left">Additions to header <code class="code">&lt;limits.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.15</td><td align="left">Additions to header <code class="code">&lt;locale&gt;</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">8.16</td><td align="left">Additions to header <code class="code">&lt;cmath&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.3</td><td align="left">Function template definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.4</td><td align="left">Additional overloads</td><td align="left">Y</td><td align="left">DR 568; DR 550</td></tr><tr><td align="left">8.17</td><td align="left">Additions to header <code class="code">&lt;math.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.18</td><td align="left">Additions to header <code class="code">&lt;cstdarg&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.19</td><td align="left">Additions to header <code class="code">&lt;stdarg.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.20</td><td align="left">The header <code class="code">&lt;cstdbool&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.21</td><td align="left">The header <code class="code">&lt;stdbool.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22</td><td align="left">The header <code class="code">&lt;cstdint&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.23</td><td align="left">The header <code class="code">&lt;stdint.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24</td><td align="left">Additions to header <code class="code">&lt;cstdio&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.3</td><td align="left">Additional format specifiers</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.24.4</td><td align="left">Additions to header <code class="code">&lt;stdio.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25</td><td align="left">Additions to header <code class="code">&lt;cstdlib&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.3</td><td align="left">Function <code class="code">abs</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.4</td><td align="left">Function <code class="code">div</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.26</td><td align="left">Additions to header <code class="code">&lt;stdlib.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.27</td><td align="left">Header <code class="code">&lt;ctgmath&gt;</code></td><td align="left">Y</td><td align="left">DR 551</td></tr><tr><td align="left">8.28</td><td align="left">Header <code class="code">&lt;tgmath.h&gt;</code></td><td align="left">Y</td><td align="left">DR 551</td></tr><tr><td align="left">8.29</td><td align="left">Additions to header <code class="code">&lt;ctime&gt;</code></td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.30</td><td align="left">Additions to header <code class="code">&lt;cwchar&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.3</td><td align="left">Additional wide format specifiers</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.31</td><td align="left">Additions to header <code class="code">&lt;wchar.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32</td><td align="left">Additions to header <code class="code">&lt;cwctype&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32.2</td><td align="left">Function <code class="code">iswblank</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.33</td><td align="left">Additions to header <code class="code">&lt;wctype.h&gt;</code></td><td align="left">Y</td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.tr1.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is specified by the 1998 and 2003 standards,
 926       see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation
 927       Specific Behavior</a>. This section documents behaviour which
 928       is required by TR1.
 929    </p><p>
 930      <span class="emphasis"><em>3.6.4 [tr.func.bind.place]/1</em></span> There are 29
 931      placeholders defined and the placeholder types are
 932      <code class="literal">Assignable</code>.
 933    </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.tr24733"></a>C++ TR 24733</h3></div></div></div><p>
 934 This table is based on the table of contents of
 935 ISO/IEC TR 24733 Date: 2009-08-28
 936 Extension for the programming language C++ to support
 937 decimal floating-point arithmetic
 938 </p><p>
 939 This page describes the TR 24733 support in mainline GCC SVN, not in any
 940 particular release.
 941 </p><div class="table"><a id="table.decfp_status"></a><p class="title"><strong>Table 1.8. C++ TR 24733 Implementation Status</strong></p><div class="table-contents"><table summary="C++ TR 24733 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left">
 942         <span class="emphasis"><em>0</em></span>
 943       </td><td colspan="3" align="left">
 944         <span class="emphasis"><em>Introduction</em></span>
 945       </td></tr><tr><td align="left">
 946         <span class="emphasis"><em>1</em></span>
 947       </td><td colspan="3" align="left">
 948         <span class="emphasis"><em>Normative references</em></span>
 949       </td></tr><tr><td align="left">
 950         <span class="emphasis"><em>2</em></span>
 951       </td><td colspan="3" align="left">
 952         <span class="emphasis"><em>Conventions</em></span>
 953       </td></tr><tr><td align="left">
 954         <span class="emphasis"><em>3</em></span>
 955       </td><td colspan="3" align="left">
 956         <span class="emphasis"><em>Decimal floating-point types</em></span>
 957       </td></tr><tr><td align="left">3.1</td><td align="left">Characteristics of decimal floating-point types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.2</td><td align="left">Decimal Types</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.1</td><td align="left">Class <code class="code">decimal</code> synopsis</td><td align="left">Partial</td><td align="left">Missing declarations for formatted input/output; non-conforming extension for functions converting to integral type</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.2</td><td align="left">Class <code class="code">decimal32</code></td><td align="left">Partial</td><td align="left">Missing 3.2.2.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.3</td><td align="left">Class <code class="code">decimal64</code></td><td align="left">Partial</td><td align="left">Missing 3.2.3.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.4</td><td align="left">Class <code class="code">decimal128</code></td><td align="left">Partial</td><td align="left">Missing 3.2.4.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr><td align="left">3.2.5</td><td align="left">Initialization from coefficient and exponent</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.6</td><td align="left">Conversion to generic floating-point type</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.7</td><td align="left">Unary arithmetic operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.8</td><td align="left">Binary arithmetic operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.9</td><td align="left">Comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.2.10</td><td align="left">Formatted input</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.2.11</td><td align="left">Formatted output</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.3</td><td align="left">Additions to header <code class="code">limits</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">3.4</td><td align="left">Headers <code class="code">cfloat</code> and <code class="code">float.h</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.4.2</td><td align="left">Additions to header <code class="code">cfloat</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">3.4.3</td><td align="left">Additions to header <code class="code">float.h</code> synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">3.4.4</td><td align="left">Maximum finite value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.5</td><td align="left">Epsilon</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.6</td><td align="left">Minimum positive normal value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.7</td><td align="left">Minimum positive subnormal value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.8</td><td align="left">Evaluation format</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.5</td><td align="left">Additions to <code class="code">cfenv</code> and <code class="code">fenv.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.6</td><td align="left">Additions to <code class="code">cmath</code> and <code class="code">math.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.7</td><td align="left">Additions to <code class="code">cstdio</code> and <code class="code">stdio.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.8</td><td align="left">Additions to <code class="code">cstdlib</code> and <code class="code">stdlib.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.9</td><td align="left">Additions to <code class="code">cwchar</code> and <code class="code">wchar.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.10</td><td align="left">Facets</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.11</td><td align="left">Type traits</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.12</td><td align="left">Hash functions</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">
 958         <span class="emphasis"><em>4</em></span>
 959       </td><td colspan="3" align="left">
 960         <span class="emphasis"><em>Notes on C compatibility</em></span>
 961       </td></tr></tbody></table></div></div><br class="table-break" /></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="intro.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="intro.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part I.
 962   Introduction
 963
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