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| <div class="section" id="bool"> |
| <h1><a class="toc-backref" href="./numeric.html#id1576">bool_</a></h1> |
| <div class="section" id="id1222"> |
| <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> |
| <pre class="literal-block"> |
| template< |
| bool C |
| > |
| struct <a href="./bool.html" class="identifier">bool_</a> |
| { |
| // <em>unspecified</em> |
| // ... |
| }; |
| |
| typedef <a href="./bool.html" class="identifier">bool_</a><true> <a href="./bool.html" class="identifier">true_</a>; |
| typedef <a href="./bool.html" class="identifier">bool_</a><false> <a href="./bool.html" class="identifier">false_</a>; |
| </pre> |
| </div> |
| <div class="section" id="id1223"> |
| <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> |
| <p>A boolean <a class="reference internal" href="./integral-constant.html">Integral Constant</a> wrapper.</p> |
| </div> |
| <div class="section" id="id1224"> |
| <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> |
| <pre class="literal-block"> |
| #include <<a href="../../../../boost/mpl/bool.hpp" class="header">boost/mpl/bool.hpp</a>> |
| </pre> |
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| <div class="section" id="id1225"> |
| <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> |
| <p><a class="reference internal" href="./integral-constant.html">Integral Constant</a></p> |
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| <div class="section" id="id1226"> |
| <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> |
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| <tr><th class="head">Parameter</th> |
| <th class="head">Requirement</th> |
| <th class="head">Description</th> |
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| <tbody valign="top"> |
| <tr><td><tt class="literal"><span class="pre">C</span></tt></td> |
| <td>A boolean integral constant</td> |
| <td>A value to wrap.</td> |
| </tr> |
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| </div> |
| <div class="section" id="id1227"> |
| <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> |
| <p>The semantics of an expression are defined only |
| where they differ from, or are not defined in <a class="reference internal" href="./integral-constant.html">Integral Constant</a>.</p> |
| <p>For arbitrary integral constant <tt class="literal"><span class="pre">c</span></tt>:</p> |
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| <col width="76%" /> |
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| <tr><th class="head">Expression</th> |
| <th class="head">Semantics</th> |
| </tr> |
| </thead> |
| <tbody valign="top"> |
| <tr><td><tt class="literal"><span class="pre"><a href="./bool.html" class="identifier">bool_</a><c></span></tt></td> |
| <td>An <a class="reference internal" href="./integral-constant.html">Integral Constant</a> <tt class="literal"><span class="pre">x</span></tt> such that <tt class="literal"><span class="pre">x::value</span> <span class="pre">==</span> <span class="pre">c</span></tt> |
| and <tt class="literal"><span class="pre">x::<a href="./value-type.html" class="identifier">value_type</a></span></tt> is identical to <tt class="literal"><span class="pre">bool</span></tt>.</td> |
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| <div class="section" id="id1228"> |
| <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> |
| <pre class="literal-block"> |
| <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./bool.html" class="identifier">bool_</a><true>::<a href="./value-type.html" class="identifier">value_type</a>, bool > )); |
| <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./bool.html" class="identifier">bool_</a><true>, <a href="./bool.html" class="identifier">true_</a> > )); } |
| <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same< <a href="./bool.html" class="identifier">bool_</a><true>::type, <a href="./bool.html" class="identifier">bool_</a><true> > )); |
| <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./bool.html" class="identifier">bool_</a><true>::value, ==, true ); |
| assert( <a href="./bool.html" class="identifier">bool_</a><true>() == true ); |
| </pre> |
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| <div class="section" id="id1229"> |
| <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> |
| <p><a class="reference internal" href="./data-types.html">Data Types</a>, <a class="reference internal" href="./integral-constant.html">Integral Constant</a>, <a class="reference internal" href="./int.html">int_</a>, <a class="reference internal" href="./long.html">long_</a>, <a class="reference internal" href="./integral-c.html">integral_c</a></p> |
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