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  26 <a name="boost.compute.merge"></a><div class="titlepage"></div>
  27 <div class="refnamediv">
  28 <h2><span class="refentrytitle">Function merge</span></h2>
  29 <p>boost::compute::merge</p>
  30 </div>
  31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_compute/reference.html#header.boost.compute.algorithm.merge_hpp" title="Header &lt;boost/compute/algorithm/merge.hpp&gt;">boost/compute/algorithm/merge.hpp</a>&gt;
  33
  34 </span>
  35 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator1<span class="special">,</span> <span class="keyword">typename</span> InputIterator2<span class="special">,</span>
  36          <span class="keyword">typename</span> OutputIterator<span class="special">,</span> <span class="keyword">typename</span> Compare<span class="special">&gt;</span>
  37   <span class="identifier">OutputIterator</span>
  38   <span class="identifier">merge</span><span class="special">(</span><span class="identifier">InputIterator1</span> first1<span class="special">,</span> <span class="identifier">InputIterator1</span> last1<span class="special">,</span> <span class="identifier">InputIterator2</span> first2<span class="special">,</span>
  39         <span class="identifier">InputIterator2</span> last2<span class="special">,</span> <span class="identifier">OutputIterator</span> result<span class="special">,</span> <span class="identifier">Compare</span> comp<span class="special">,</span>
  40         <span class="identifier">command_queue</span> <span class="special">&amp;</span> queue <span class="special">=</span> <span class="identifier">system</span><span class="special">::</span><span class="identifier">default_queue</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  41 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator1<span class="special">,</span> <span class="keyword">typename</span> InputIterator2<span class="special">,</span>
  42          <span class="keyword">typename</span> OutputIterator<span class="special">&gt;</span>
  43   <span class="identifier">OutputIterator</span>
  44   <span class="identifier">merge</span><span class="special">(</span><span class="identifier">InputIterator1</span> first1<span class="special">,</span> <span class="identifier">InputIterator1</span> last1<span class="special">,</span> <span class="identifier">InputIterator2</span> first2<span class="special">,</span>
  45         <span class="identifier">InputIterator2</span> last2<span class="special">,</span> <span class="identifier">OutputIterator</span> result<span class="special">,</span>
  46         <span class="identifier">command_queue</span> <span class="special">&amp;</span> queue <span class="special">=</span> <span class="identifier">system</span><span class="special">::</span><span class="identifier">default_queue</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></div>
  47 <div class="refsect1">
  48 <a name="idm46113332759440"></a><h2>Description</h2>
  49 <p>Merges the sorted values in the range [<code class="computeroutput">first1</code>, <code class="computeroutput">last1</code>) with the sorted values in the range [<code class="computeroutput">first2</code>, last2) and stores the result in the range beginning at <code class="computeroutput">result</code>. Values are compared using the <code class="computeroutput">comp</code> function. If no comparision function is given, <code class="computeroutput">less</code> is used.</p>
  50 <p>
  51
  52 Space complexity: \Omega(distance(<code class="computeroutput">first1</code>, <code class="computeroutput">last1</code>) + distance(<code class="computeroutput">first2</code>, <code class="computeroutput">last2</code>))</p>
  53 <p><span class="bold"><strong>See Also:</strong></span></p>
  54 <p>inplace_merge() </p>
  55 <p>
  56 </p>
  57 <p>
  58 </p>
  59 <div class="variablelist"><table border="0" class="variablelist compact">
  60 <colgroup>
  61 <col align="left" valign="top">
  62 <col>
  63 </colgroup>
  64 <tbody>
  65 <tr>
  66 <td><p><span class="term">Parameters:</span></p></td>
  67 <td><div class="variablelist"><table border="0" class="variablelist compact">
  68 <colgroup>
  69 <col align="left" valign="top">
  70 <col>
  71 </colgroup>
  72 <tbody>
  73 <tr>
  74 <td><p><span class="term"><code class="computeroutput">comp</code></span></p></td>
  75 <td><p>comparison function (by default <code class="computeroutput">less</code>) </p></td>
  76 </tr>
  77 <tr>
  78 <td><p><span class="term"><code class="computeroutput">first1</code></span></p></td>
  79 <td><p>first element in the first range to merge </p></td>
  80 </tr>
  81 <tr>
  82 <td><p><span class="term"><code class="computeroutput">first2</code></span></p></td>
  83 <td><p>first element in the second range to merge </p></td>
  84 </tr>
  85 <tr>
  86 <td><p><span class="term"><code class="computeroutput">last1</code></span></p></td>
  87 <td><p>last element in the first range to merge </p></td>
  88 </tr>
  89 <tr>
  90 <td><p><span class="term"><code class="computeroutput">last2</code></span></p></td>
  91 <td><p>last element in the second range to merge </p></td>
  92 </tr>
  93 <tr>
  94 <td><p><span class="term"><code class="computeroutput">queue</code></span></p></td>
  95 <td><p>command queue to perform the operation</p></td>
  96 </tr>
  97 <tr>
  98 <td><p><span class="term"><code class="computeroutput">result</code></span></p></td>
  99 <td><p>first element in the result range </p></td>
 100 </tr>
 101 </tbody>
 102 </table></div></td>
 103 </tr>
 104 <tr>
 105 <td><p><span class="term">Returns:</span></p></td>
 106 <td><p><code class="computeroutput">OutputIterator</code> to the end of the result range</p></td>
 107 </tr>
 108 </tbody>
 109 </table></div>
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