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<title>Numeric Parsers</title>
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<div class="titlepage"><div><div><h3 class="title">
<a name="spirit_x3.quick_reference.numeric"></a><a class="link" href="numeric.html" title="Numeric Parsers">Numeric Parsers</a>
</h3></div></div></div>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                <p>
                  Expression
                </p>
              </th>
<th>
                <p>
                  Attribute
                </p>
              </th>
<th>
                <p>
                  Description
                </p>
              </th>
</tr></thead>
<tbody>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">float_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">float</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">float</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">float_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">float</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">float</span></code>,
                  a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">double_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">double</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">double</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">double_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">double</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">double</span></code>,
                  a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_double</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">double</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">long</span>
                  <span class="keyword">double</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_double</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">double</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a floating point number into a <code class="computeroutput"><span class="keyword">long</span>
                  <span class="keyword">double</span></code>, a number is matched
                  only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">bin</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a binary integer into an <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">oct</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an octal integer into an <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">hex</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a hexadecimal integer into an <code class="computeroutput"><span class="keyword">unsigned</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ushort_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">short</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned short integer
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ushort_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">short</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned short integer, a number is matched only if it's
                  <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ulong_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned long integer
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ulong_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned long integer, a number is matched only if it's
                  <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">uint_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">int</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned int
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">uint_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">int</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned int, a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ulong_long</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">long</span>
                  <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned long long
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">ulong_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">unsigned</span> <span class="keyword">long</span>
                  <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an unsigned long long, a number is matched only if it's
                  <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">short_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">short</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a short integer
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">short_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">short</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a short integer, a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a long integer
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a long integer, a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">int_</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an int
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">int_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">int</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse an int, a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_long</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a long long
                </p>
              </td>
</tr>
<tr>
<td>
                <p>
                  <code class="computeroutput"><span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>
                </p>
              </td>
<td>
                <p>
                  <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">long</span></code>
                </p>
              </td>
<td>
                <p>
                  Parse a long long, a number is matched only if it's <code class="computeroutput"><span class="identifier">num</span></code>
                </p>
              </td>
</tr>
</tbody>
</table></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2001-2018 Joel de Guzman,
      Hartmut Kaiser<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
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