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  25 <div class="refentry">
  26 <a name="boost.compute.function_input_iterator"></a><div class="titlepage"></div>
  27 <div class="refnamediv">
  28 <h2><span class="refentrytitle">Class template function_input_iterator</span></h2>
  29 <p>boost::compute::function_input_iterator &#8212; Iterator which returns the result of a function when dereferenced. </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.iterator.function_input_iterator_hpp" title="Header &lt;boost/compute/iterator/function_input_iterator.hpp&gt;">boost/compute/iterator/function_input_iterator.hpp</a>&gt;
  33
  34 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Function<span class="special">&gt;</span>
  35 <span class="keyword">class</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a> <span class="special">{</span>
  36 <span class="keyword">public</span><span class="special">:</span>
  37   <span class="comment">// types</span>
  38   <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span>                 <a name="boost.compute.function_input_iterator.super_type"></a><span class="identifier">super_type</span><span class="special">;</span>
  39   <span class="keyword">typedef</span> <span class="identifier">super_type</span><span class="special">::</span><span class="identifier">reference</span>       <a name="boost.compute.function_input_iterator.reference"></a><span class="identifier">reference</span><span class="special">;</span>
  40   <span class="keyword">typedef</span> <span class="identifier">super_type</span><span class="special">::</span><span class="identifier">difference_type</span> <a name="boost.compute.function_input_iterator.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>
  41   <span class="keyword">typedef</span> <span class="identifier">Function</span>                    <a name="boost.compute.function_input_iterator.function"></a><span class="identifier">function</span><span class="special">;</span>
  42
  43   <span class="comment">// <a class="link" href="function_input_iterator.html#boost.compute.function_input_iteratorconstruct-copy-destruct">construct/copy/destruct</a></span>
  44   <a class="link" href="function_input_iterator.html#idp49301872-bb"><span class="identifier">function_input_iterator</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Function</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">size_t</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
  45   <a class="link" href="function_input_iterator.html#idp49303824-bb"><span class="identifier">function_input_iterator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  46   <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  47   <a class="link" href="function_input_iterator.html#idp49305248-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  48   <a class="link" href="function_input_iterator.html#idp49307248-bb"><span class="special">~</span><span class="identifier">function_input_iterator</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  49
  50   <span class="comment">// <a class="link" href="function_input_iterator.html#idp49297248-bb">public member functions</a></span>
  51   <span class="identifier">size_t</span> <a class="link" href="function_input_iterator.html#idp49297808-bb"><span class="identifier">get_index</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  52   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Expr<span class="special">&gt;</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a class="link" href="function_input_iterator.html#idp49298928-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Expr</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  53
  54   <span class="comment">// <a class="link" href="function_input_iterator.html#idp49307536-bb">private member functions</a></span>
  55   <span class="identifier">reference</span> <a class="link" href="function_input_iterator.html#idp49308112-bb"><span class="identifier">dereference</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  56   <span class="keyword">bool</span> <a class="link" href="function_input_iterator.html#idp49309232-bb"><span class="identifier">equal</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  57   <span class="keyword">void</span> <a class="link" href="function_input_iterator.html#idp49311488-bb"><span class="identifier">increment</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  58   <span class="keyword">void</span> <a class="link" href="function_input_iterator.html#idp49312336-bb"><span class="identifier">decrement</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  59   <span class="keyword">void</span> <a class="link" href="function_input_iterator.html#idp49313184-bb"><span class="identifier">advance</span></a><span class="special">(</span><span class="identifier">difference_type</span><span class="special">)</span><span class="special">;</span>
  60   <span class="identifier">difference_type</span>
  61   <a class="link" href="function_input_iterator.html#idp49314720-bb"><span class="identifier">distance_to</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  62 <span class="special">}</span><span class="special">;</span></pre></div>
  63 <div class="refsect1">
  64 <a name="idp108717296"></a><h2>Description</h2>
  65 <p>For example:</p>
  66 <pre class="programlisting"></pre>
  67 <p> </p>
  68 <p><span class="bold"><strong>See Also:</strong></span></p>
  69 <p>make_function_input_iterator() </p>
  70 <p>
  71 </p>
  72 <div class="refsect2">
  73 <a name="idp108719728"></a><h3>
  74 <a name="boost.compute.function_input_iteratorconstruct-copy-destruct"></a><code class="computeroutput">function_input_iterator</code>
  75         public
  76        construct/copy/destruct</h3>
  77 <div class="orderedlist"><ol class="orderedlist" type="1">
  78 <li class="listitem"><pre class="literallayout"><a name="idp49301872-bb"></a><span class="identifier">function_input_iterator</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Function</span> <span class="special">&amp;</span> function<span class="special">,</span> <span class="identifier">size_t</span> index <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre></li>
  79 <li class="listitem"><pre class="literallayout"><a name="idp49303824-bb"></a><span class="identifier">function_input_iterator</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span> other<span class="special">)</span><span class="special">;</span></pre></li>
  80 <li class="listitem"><pre class="literallayout"><a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
  81 <a name="idp49305248-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span> other<span class="special">)</span><span class="special">;</span></pre></li>
  82 <li class="listitem"><pre class="literallayout"><a name="idp49307248-bb"></a><span class="special">~</span><span class="identifier">function_input_iterator</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
  83 </ol></div>
  84 </div>
  85 <div class="refsect2">
  86 <a name="idp108754112"></a><h3>
  87 <a name="idp49297248-bb"></a><code class="computeroutput">function_input_iterator</code> public member functions</h3>
  88 <div class="orderedlist"><ol class="orderedlist" type="1">
  89 <li class="listitem"><pre class="literallayout"><span class="identifier">size_t</span> <a name="idp49297808-bb"></a><span class="identifier">get_index</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
  90 <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Expr<span class="special">&gt;</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="idp49298928-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Expr</span> <span class="special">&amp;</span> expr<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
  91 </ol></div>
  92 </div>
  93 <div class="refsect2">
  94 <a name="idp108771984"></a><h3>
  95 <a name="idp49307536-bb"></a><code class="computeroutput">function_input_iterator</code> private member functions</h3>
  96 <div class="orderedlist"><ol class="orderedlist" type="1">
  97 <li class="listitem"><pre class="literallayout"><span class="identifier">reference</span> <a name="idp49308112-bb"></a><span class="identifier">dereference</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
  98 <li class="listitem"><pre class="literallayout"><span class="keyword">bool</span> <a name="idp49309232-bb"></a><span class="identifier">equal</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span> other<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
  99 <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idp49311488-bb"></a><span class="identifier">increment</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
 100 <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idp49312336-bb"></a><span class="identifier">decrement</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
 101 <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idp49313184-bb"></a><span class="identifier">advance</span><span class="special">(</span><span class="identifier">difference_type</span> n<span class="special">)</span><span class="special">;</span></pre></li>
 102 <li class="listitem"><pre class="literallayout"><span class="identifier">difference_type</span>
 103 <a name="idp49314720-bb"></a><span class="identifier">distance_to</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="function_input_iterator.html" title="Class template function_input_iterator">function_input_iterator</a><span class="special">&lt;</span> <span class="identifier">Function</span> <span class="special">&gt;</span> <span class="special">&amp;</span> other<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
 104 </ol></div>
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