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accesskey="n" href="derivation_value_traits.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.intrusive.circular_slist_algorithms"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Class template circular_slist_algorithms</span></h2> 30<p>boost::intrusive::circular_slist_algorithms</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../intrusive/reference.html#header.boost.intrusive.circular_slist_algorithms_hpp" title="Header <boost/intrusive/circular_slist_algorithms.hpp>">boost/intrusive/circular_slist_algorithms.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> NodeTraits<span class="special">></span> 36<span class="keyword">class</span> <a class="link" href="circular_slist_algorithms.html" title="Class template circular_slist_algorithms">circular_slist_algorithms</a> <span class="special">{</span> 37<span class="keyword">public</span><span class="special">:</span> 38 <span class="comment">// types</span> 39 <span class="keyword">typedef</span> <span class="identifier">NodeTraits</span><span class="special">::</span><span class="identifier">node</span> <a name="boost.intrusive.circular_slist_algorithms.node"></a><span class="identifier">node</span><span class="special">;</span> 40 <span class="keyword">typedef</span> <span class="identifier">NodeTraits</span><span class="special">::</span><span class="identifier">node_ptr</span> <a name="boost.intrusive.circular_slist_algorithms.node_ptr"></a><span class="identifier">node_ptr</span><span class="special">;</span> 41 <span class="keyword">typedef</span> <span class="identifier">NodeTraits</span><span class="special">::</span><span class="identifier">const_node_ptr</span> <a name="boost.intrusive.circular_slist_algorithms.const_node_ptr"></a><span class="identifier">const_node_ptr</span><span class="special">;</span> 42 <span class="keyword">typedef</span> <span class="identifier">NodeTraits</span> <a name="boost.intrusive.circular_slist_algorithms.node_traits"></a><span class="identifier">node_traits</span><span class="special">;</span> 43 44 <span class="comment">// <a class="link" href="circular_slist_algorithms.html#idm45020922947696-bb">public static functions</a></span> 45 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922947136-bb"><span class="identifier">init</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 46 <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="circular_slist_algorithms.html#idm45020922942272-bb"><span class="identifier">unique</span></a><span class="special">(</span><span class="identifier">const_node_ptr</span><span class="special">)</span><span class="special">;</span> 47 <span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="circular_slist_algorithms.html#idm45020922936448-bb"><span class="identifier">inited</span></a><span class="special">(</span><span class="identifier">const_node_ptr</span><span class="special">)</span><span class="special">;</span> 48 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922931888-bb"><span class="identifier">unlink_after</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 49 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922926464-bb"><span class="identifier">unlink_after</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 50 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922920336-bb"><span class="identifier">link_after</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 51 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922914256-bb"><span class="identifier">transfer_after</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 52 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922907360-bb"><span class="identifier">init_header</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 53 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922902336-bb"><span class="identifier">get_previous_node</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 54 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922896048-bb"><span class="identifier">get_previous_node</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 55 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922890576-bb"><span class="identifier">get_previous_previous_node</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 56 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922885072-bb"><span class="identifier">get_previous_previous_node</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 57 <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a class="link" href="circular_slist_algorithms.html#idm45020922878784-bb"><span class="identifier">count</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">const_node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 58 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922873328-bb"><span class="identifier">unlink</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 59 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922867872-bb"><span class="identifier">link_before</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 60 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922861744-bb"><span class="identifier">swap_nodes</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 61 <span class="keyword">static</span> <span class="keyword">void</span> <a class="link" href="circular_slist_algorithms.html#idm45020922855440-bb"><span class="identifier">reverse</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">)</span><span class="special">;</span> 62 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922850896-bb"><span class="identifier">move_backwards</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">)</span><span class="special">;</span> 63 <span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="circular_slist_algorithms.html#idm45020922844688-bb"><span class="identifier">move_forward</span></a><span class="special">(</span><span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">)</span><span class="special">;</span> 64<span class="special">}</span><span class="special">;</span></pre></div> 65<div class="refsect1"> 66<a name="id-1.3.20.42.12.3.4"></a><h2>Description</h2> 67<p><a class="link" href="circular_slist_algorithms.html" title="Class template circular_slist_algorithms">circular_slist_algorithms</a> provides basic algorithms to manipulate nodes forming a circular singly linked list. An empty circular list is formed by a node whose pointer to the next node points to itself.</p> 68<p><a class="link" href="circular_slist_algorithms.html" title="Class template circular_slist_algorithms">circular_slist_algorithms</a> is configured with a NodeTraits class, which encapsulates the information about the node to be manipulated. NodeTraits must support the following interface:</p> 69<p><span class="bold"><strong>Typedefs</strong></span>:</p> 70<p><code class="computeroutput">node</code>: The type of the node that forms the circular list</p> 71<p><code class="computeroutput">node_ptr</code>: A pointer to a node</p> 72<p><code class="computeroutput">const_node_ptr</code>: A pointer to a const node</p> 73<p><span class="bold"><strong>Static functions</strong></span>:</p> 74<p><code class="computeroutput">static node_ptr get_next(const_node_ptr n);</code></p> 75<p><code class="computeroutput">static void set_next(node_ptr n, node_ptr next);</code> </p> 76<div class="refsect2"> 77<a name="id-1.3.20.42.12.3.4.11"></a><h3> 78<a name="idm45020922947696-bb"></a><code class="computeroutput">circular_slist_algorithms</code> public static functions</h3> 79<div class="orderedlist"><ol class="orderedlist" type="1"> 80<li class="listitem"> 81<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922947136-bb"></a><span class="identifier">init</span><span class="special">(</span><span class="identifier">node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 82<p><span class="bold"><strong>Effects</strong></span>: Constructs an non-used list element, putting the next pointer to null: <code class="computeroutput">NodeTraits::get_next(this_node) == node_ptr()</code></p> 83<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 84<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 85</li> 86<li class="listitem"> 87<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45020922942272-bb"></a><span class="identifier">unique</span><span class="special">(</span><span class="identifier">const_node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 88<p><span class="bold"><strong>Requires</strong></span>: this_node must be in a circular list or be an empty circular list.</p> 89<p><span class="bold"><strong>Effects</strong></span>: Returns true is "this_node" is the only node of a circular list: or it's a not inserted node: <code class="computeroutput">return node_ptr() == NodeTraits::get_next(this_node) || NodeTraits::get_next(this_node) == this_node</code></p> 90<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 91<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 92</li> 93<li class="listitem"> 94<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="idm45020922936448-bb"></a><span class="identifier">inited</span><span class="special">(</span><span class="identifier">const_node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 95<p><span class="bold"><strong>Effects</strong></span>: Returns true is "this_node" has the same state as if it was inited using "init(node_ptr)"</p> 96<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 97<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 98</li> 99<li class="listitem"> 100<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922931888-bb"></a><span class="identifier">unlink_after</span><span class="special">(</span><span class="identifier">node_ptr</span> prev_node<span class="special">)</span><span class="special">;</span></pre> 101<p><span class="bold"><strong>Requires</strong></span>: prev_node must be in a circular list or be an empty circular list.</p> 102<p><span class="bold"><strong>Effects</strong></span>: Unlinks the next node of prev_node from the circular list.</p> 103<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 104<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 105</li> 106<li class="listitem"> 107<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922926464-bb"></a><span class="identifier">unlink_after</span><span class="special">(</span><span class="identifier">node_ptr</span> prev_node<span class="special">,</span> <span class="identifier">node_ptr</span> last_node<span class="special">)</span><span class="special">;</span></pre> 108<p><span class="bold"><strong>Requires</strong></span>: prev_node and last_node must be in a circular list or be an empty circular list.</p> 109<p><span class="bold"><strong>Effects</strong></span>: Unlinks the range (prev_node, last_node) from the circular list.</p> 110<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 111<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 112</li> 113<li class="listitem"> 114<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922920336-bb"></a><span class="identifier">link_after</span><span class="special">(</span><span class="identifier">node_ptr</span> prev_node<span class="special">,</span> <span class="identifier">node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 115<p><span class="bold"><strong>Requires</strong></span>: prev_node must be a node of a circular list.</p> 116<p><span class="bold"><strong>Effects</strong></span>: Links this_node after prev_node in the circular list.</p> 117<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 118<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 119</li> 120<li class="listitem"> 121<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922914256-bb"></a><span class="identifier">transfer_after</span><span class="special">(</span><span class="identifier">node_ptr</span> p<span class="special">,</span> <span class="identifier">node_ptr</span> b<span class="special">,</span> <span class="identifier">node_ptr</span> e<span class="special">)</span><span class="special">;</span></pre> 122<p><span class="bold"><strong>Requires</strong></span>: b and e must be nodes of the same circular list or an empty range. and p must be a node of a different circular list.</p> 123<p><span class="bold"><strong>Effects</strong></span>: Removes the nodes from (b, e] range from their circular list and inserts them after p in p's circular list.</p> 124<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 125<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 126</li> 127<li class="listitem"> 128<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922907360-bb"></a><span class="identifier">init_header</span><span class="special">(</span><span class="identifier">node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 129<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty list, making this_node the only node of the circular list: <code class="computeroutput">NodeTraits::get_next(this_node) == this_node</code>.</p> 130<p><span class="bold"><strong>Complexity</strong></span>: Constant</p> 131<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 132</li> 133<li class="listitem"> 134<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> 135<a name="idm45020922902336-bb"></a><span class="identifier">get_previous_node</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> prev_init_node<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> this_node<span class="special">)</span><span class="special">;</span></pre> 136<p><span class="bold"><strong>Requires</strong></span>: this_node and prev_init_node must be in the same circular list.</p> 137<p><span class="bold"><strong>Effects</strong></span>: Returns the previous node of this_node in the circular list starting. the search from prev_init_node. The first node checked for equality is NodeTraits::get_next(prev_init_node).</p> 138<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements between prev_init_node and this_node.</p> 139<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 140</li> 141<li class="listitem"> 142<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idm45020922896048-bb"></a><span class="identifier">get_previous_node</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> this_node<span class="special">)</span><span class="special">;</span></pre> 143<p><span class="bold"><strong>Requires</strong></span>: this_node must be in a circular list or be an empty circular list.</p> 144<p><span class="bold"><strong>Effects</strong></span>: Returns the previous node of this_node in the circular list.</p> 145<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the circular list.</p> 146<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 147</li> 148<li class="listitem"> 149<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idm45020922890576-bb"></a><span class="identifier">get_previous_previous_node</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> this_node<span class="special">)</span><span class="special">;</span></pre> 150<p><span class="bold"><strong>Requires</strong></span>: this_node must be in a circular list or be an empty circular list.</p> 151<p><span class="bold"><strong>Effects</strong></span>: Returns the previous node of the previous node of this_node in the circular list.</p> 152<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the circular list.</p> 153<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 154</li> 155<li class="listitem"> 156<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> 157<a name="idm45020922885072-bb"></a><span class="identifier">get_previous_previous_node</span><span class="special">(</span><span class="identifier">node_ptr</span> p<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> this_node<span class="special">)</span><span class="special">;</span></pre> 158<p><span class="bold"><strong>Requires</strong></span>: this_node and p must be in the same circular list.</p> 159<p><span class="bold"><strong>Effects</strong></span>: Returns the previous node of the previous node of this_node in the circular list starting. the search from p. The first node checked for equality is NodeTraits::get_next((NodeTraits::get_next(p)).</p> 160<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the circular list.</p> 161<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 162</li> 163<li class="listitem"> 164<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="idm45020922878784-bb"></a><span class="identifier">count</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">const_node_ptr</span> <span class="special">&</span> this_node<span class="special">)</span><span class="special">;</span></pre> 165<p><span class="bold"><strong>Requires</strong></span>: this_node must be in a circular list or be an empty circular list.</p> 166<p><span class="bold"><strong>Effects</strong></span>: Returns the number of nodes in a circular list. If the circular list is empty, returns 1.</p> 167<p><span class="bold"><strong>Complexity</strong></span>: Linear</p> 168<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 169</li> 170<li class="listitem"> 171<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922873328-bb"></a><span class="identifier">unlink</span><span class="special">(</span><span class="identifier">node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 172<p><span class="bold"><strong>Requires</strong></span>: this_node must be in a circular list, be an empty circular list or be inited.</p> 173<p><span class="bold"><strong>Effects</strong></span>: Unlinks the node from the circular list.</p> 174<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the circular list</p> 175<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 176</li> 177<li class="listitem"> 178<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922867872-bb"></a><span class="identifier">link_before</span><span class="special">(</span><span class="identifier">node_ptr</span> nxt_node<span class="special">,</span> <span class="identifier">node_ptr</span> this_node<span class="special">)</span><span class="special">;</span></pre> 179<p><span class="bold"><strong>Requires</strong></span>: nxt_node must be a node of a circular list.</p> 180<p><span class="bold"><strong>Effects</strong></span>: Links this_node before nxt_node in the circular list.</p> 181<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the circular list.</p> 182<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 183</li> 184<li class="listitem"> 185<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922861744-bb"></a><span class="identifier">swap_nodes</span><span class="special">(</span><span class="identifier">node_ptr</span> this_node<span class="special">,</span> <span class="identifier">node_ptr</span> other_node<span class="special">)</span><span class="special">;</span></pre> 186<p><span class="bold"><strong>Requires</strong></span>: this_node and other_node must be nodes inserted in circular lists or be empty circular lists.</p> 187<p><span class="bold"><strong>Effects</strong></span>: Swaps the position of the nodes: this_node is inserted in other_nodes position in the second circular list and the other_node is inserted in this_node's position in the first circular list.</p> 188<p><span class="bold"><strong>Complexity</strong></span>: Linear to number of elements of both lists</p> 189<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p> 190</li> 191<li class="listitem"> 192<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idm45020922855440-bb"></a><span class="identifier">reverse</span><span class="special">(</span><span class="identifier">node_ptr</span> p<span class="special">)</span><span class="special">;</span></pre> 193<p><span class="bold"><strong>Effects</strong></span>: Reverses the order of elements in the list.</p> 194<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p> 195<p><span class="bold"><strong>Complexity</strong></span>: This function is linear to the contained elements. </p> 196</li> 197<li class="listitem"> 198<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idm45020922850896-bb"></a><span class="identifier">move_backwards</span><span class="special">(</span><span class="identifier">node_ptr</span> p<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> n<span class="special">)</span><span class="special">;</span></pre> 199<p><span class="bold"><strong>Effects</strong></span>: Moves the node p n positions towards the end of the list.</p> 200<p><span class="bold"><strong>Returns</strong></span>: The previous node of p after the function if there has been any movement, Null if n leads to no movement.</p> 201<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p> 202<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements plus the number moved positions. </p> 203</li> 204<li class="listitem"> 205<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idm45020922844688-bb"></a><span class="identifier">move_forward</span><span class="special">(</span><span class="identifier">node_ptr</span> p<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> n<span class="special">)</span><span class="special">;</span></pre> 206<p><span class="bold"><strong>Effects</strong></span>: Moves the node p n positions towards the beginning of the list.</p> 207<p><span class="bold"><strong>Returns</strong></span>: The previous node of p after the function if there has been any movement, Null if n leads equals to no movement.</p> 208<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p> 209<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements plus the number moved positions. </p> 210</li> 211</ol></div> 212</div> 213</div> 214</div> 215<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 216<td align="left"></td> 217<td align="right"><div class="copyright-footer">Copyright © 2005 Olaf Krzikalla<br>Copyright © 2006-2015 Ion Gaztanaga<p> 218 Distributed under the Boost Software License, Version 1.0. (See accompanying 219 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>) 220 </p> 221</div></td> 222</tr></table> 223<hr> 224<div class="spirit-nav"> 225<a accesskey="p" href="circular_list_algorithms/stable_partition_info.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../intrusive/reference.html#header.boost.intrusive.circular_slist_algorithms_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="derivation_value_traits.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 226</div> 227</body> 228</html> 229
