ceph/src/boost/libs/qvm/doc/deduce_quat.html

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  14 <h1>QVM: Quaternions, Vectors, Matrices</h1>
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  16 <!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
  17 <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
  18 <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
  19 <div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>deduce_quat</h3>
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  21 <div class="RenoIncludeDIV"><p><span class="RenoEscape">&#35;<!--<wiki>`&#35;</wiki>--></span>include &lt;<span class="RenoLink"><a href="boost_qvm_deduce_quat_hpp.html">boost/qvm/deduce_quat.hpp</a></span>&gt;</p>
  22 <pre>namespace boost
  23 {
  24     namespace <span class="RenoLink"><a href="qvm.html">qvm</a></span>
  25     {
  26 <span class="RenoIncludeSPAN">        template &lt;class Q&gt;
  27         struct <span class="RenoLink">deduce_quat</span>
  28         {
  29             typedef Q type;
  30         };</span>
  31     }
  32 }</pre>
  33 </div><h4>Assumption:</h4>
  34 <p><i><span class="RenoLink"><a href="is_quat.html">is_quat</a></span>&lt;Q&gt;::value</i> is true.</p>
  35 <h4>Requirements:</h4>
  36 <div><ul><li><i><span class="RenoLink"><a href="is_quat.html">is_quat</a></span>&lt;<span class="RenoLink">deduce_quat</span>&lt;Q&gt;::type&gt;::value</i> must be <i>true</i></li>
  37 <li><i><span class="RenoLink">deduce_quat</span>&lt;Q&gt;::type</i> must be copyable</li>
  38 </ul></div>
  39 <p>This template is used by Boost QVM whenever it needs to deduce a copyable quaternion type from a single user-supplied function parameter of quaternion type. Note that <i>Q</i> itself may be non-copyable.</p>
  40 <p>The main template definition returns <i>Q</i>, which means that it is suitable only for copyable quaternion types. Boost QVM also defines (partial) specializations for the non-copyable quaternion types it produces. Users can define other (partial) specializations for their own types.</p>
  41 <p>A typical use of the <i><span class="RenoLink">deduce_quat</span></i> template is for specifying the preferred quaternion type to be returned by the generic function template overloads in Boost QVM depending on the type of their arguments.</p>
  42 </div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div>
  43 See also: <span class="RenoPageList"><a href="boost_qvm_deduce_quat_hpp.html">boost/qvm/deduce_quat.hpp</a>&nbsp;| <a href="boost_qvm_quat_traits_array_hpp.html">boost/qvm/quat_traits_array.hpp</a>&nbsp;| <a href="conjugate.html">conjugate</a>&nbsp;| <a href="inverse_quat_.html">inverse(quat)</a>&nbsp;| <a href="normalized_quat_.html">normalized(quat)</a>&nbsp;| <a href="operator_times_quat_scalar_.html">operator*(quat,scalar)</a>&nbsp;| <a href="operator_minus_quat_.html">operator-(quat)</a>&nbsp;| <a href="operator_over_quat_scalar_.html">operator/(quat,scalar)</a></span>
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  45 <!-- Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc. -->
  46 <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying -->
  47 <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -->
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  52 <small>Copyright (c) 2008-2016 by Emil Dotchevski and Reverge Studios, Inc.<br/>
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