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<title>Algorithms_in_C++: backtracking/knight_tour.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber"> 1.0.0</span>
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<div id="projectname">TheAlgorithms/C++<span id="projectnumber"> 1.0.0</span>
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</div>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
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<div id="projectbrief">All the algorithms implemented in C++</div>
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</td>
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</tr>
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</tbody>
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@@ -120,7 +137,9 @@ Include dependency graph for knight_tour.cpp:</div>
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<div class="dyncontent">
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../de/d02/knight__tour_8cpp__incl.svg" width="158" height="126"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<p><a href="../../d1/d2a/knight__tour_8cpp_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="namespaces" name="namespaces"></a>
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Namespaces</h2></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/dc0/namespacebacktracking.html">backtracking</a></td></tr>
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@@ -133,10 +152,10 @@ Namespaces</h2></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:af27031fbff093ffd625f64010d98aab2" id="r_af27031fbff093ffd625f64010d98aab2"><td class="memTemplParams" colspan="2">template<size_t V> </td></tr>
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<tr class="memitem:af27031fbff093ffd625f64010d98aab2"><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#af27031fbff093ffd625f64010d98aab2">backtracking::knight_tour::issafe</a> (int x, int y, const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V >, V > &sol)</td></tr>
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<tr class="memitem:af27031fbff093ffd625f64010d98aab2"><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#af27031fbff093ffd625f64010d98aab2">backtracking::knight_tour::issafe</a> (int x, int y, const std::array< std::array< int, V >, V > &sol)</td></tr>
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<tr class="separator:af27031fbff093ffd625f64010d98aab2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aaa47356d98676cf5315d978f741e29c9" id="r_aaa47356d98676cf5315d978f741e29c9"><td class="memTemplParams" colspan="2">template<size_t V> </td></tr>
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<tr class="memitem:aaa47356d98676cf5315d978f741e29c9"><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#aaa47356d98676cf5315d978f741e29c9">backtracking::knight_tour::solve</a> (int x, int y, int <a class="el" href="../../db/d3c/tower__of__hanoi_8cpp.html#af4cfc41e546f1f8d25f01e0804e8b61d">mov</a>, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V >, V > &sol, const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V > &xmov, <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V > &ymov)</td></tr>
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<tr class="memitem:aaa47356d98676cf5315d978f741e29c9"><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#aaa47356d98676cf5315d978f741e29c9">backtracking::knight_tour::solve</a> (int x, int y, int <a class="el" href="../../db/d3c/tower__of__hanoi_8cpp.html#af4cfc41e546f1f8d25f01e0804e8b61d">mov</a>, std::array< std::array< int, V >, V > &sol, const std::array< int, V > &xmov, std::array< int, V > &ymov)</td></tr>
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<tr class="separator:aaa47356d98676cf5315d978f741e29c9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4" id="r_ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
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||||
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft"> </td><td class="mdescRight">Main function. <br /></td></tr>
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@@ -148,6 +167,8 @@ Functions</h2></td></tr>
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||||
<dl class="section author"><dt>Author</dt><dd><a href="https://github.com/nikhilarora068" target="_blank">Nikhil Arora</a> </dd>
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<dd>
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<a href="https://github.com/Panquesito7" target="_blank">David Leal</a> </dd></dl>
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<p class="definition">Definition in file <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html">knight_tour.cpp</a>.</p>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a id="af27031fbff093ffd625f64010d98aab2" name="af27031fbff093ffd625f64010d98aab2"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af27031fbff093ffd625f64010d98aab2">◆ </a></span>issafe()</h2>
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@@ -170,7 +191,7 @@ template<size_t V> </div>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V >, V > &</td> <td class="paramname"><span class="paramname"><em>sol</em></span> )</td>
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<td class="paramtype">const std::array< std::array< int, V >, V > &</td> <td class="paramname"><span class="paramname"><em>sol</em></span> )</td>
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@@ -191,15 +212,12 @@ template<size_t V> </div>
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<dl class="section return"><dt>Returns</dt><dd><code>true</code> if .... </dd>
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<dd>
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<code>false</code> if .... </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html#l00040">40</a> of file <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html">knight_tour.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 40</span> {</div>
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<div class="line"><span class="lineno"> 41</span> <span class="keywordflow">return</span> (x < V && x >= 0 && y < V && y >= 0 && sol[x][y] == -1);</div>
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<div class="line"><span class="lineno"> 42</span>}</div>
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</div><!-- fragment --><div class="dynheader">
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Here is the call graph for this function:</div>
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<div class="dyncontent">
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||||
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d1/d2a/knight__tour_8cpp_af27031fbff093ffd625f64010d98aab2_cgraph.svg" width="150" height="76"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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</div>
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</div><!-- fragment -->
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@@ -219,9 +237,11 @@ Here is the call graph for this function:</div>
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<p>Main function. </p>
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<dl class="section return"><dt>Returns</dt><dd>0 on exit </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html#l00088">88</a> of file <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html">knight_tour.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 88</span> {</div>
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<div class="line"><span class="lineno"> 89</span> <span class="keyword">const</span> <span class="keywordtype">int</span> n = 8;</div>
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<div class="line"><span class="lineno"> 90</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array<std::array<int, n></a>, n> sol = {0};</div>
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<div class="line"><span class="lineno"> 90</span> std::array<std::array<int, n>, n> sol = {0};</div>
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<div class="line"><span class="lineno"> 91</span> </div>
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<div class="line"><span class="lineno"> 92</span> <span class="keywordtype">int</span> i = 0, j = 0;</div>
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<div class="line"><span class="lineno"> 93</span> <span class="keywordflow">for</span> (i = 0; i < n; i++) {</div>
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@@ -230,26 +250,24 @@ Here is the call graph for this function:</div>
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<div class="line"><span class="lineno"> 96</span> }</div>
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<div class="line"><span class="lineno"> 97</span> }</div>
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<div class="line"><span class="lineno"> 98</span> </div>
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<div class="line"><span class="lineno"> 99</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array<int, n></a> xmov = {2, 1, -1, -2, -2, -1, 1, 2};</div>
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<div class="line"><span class="lineno"> 100</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array<int, n></a> ymov = {1, 2, 2, 1, -1, -2, -2, -1};</div>
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<div class="line"><span class="lineno"> 99</span> std::array<int, n> xmov = {2, 1, -1, -2, -2, -1, 1, 2};</div>
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<div class="line"><span class="lineno"> 100</span> std::array<int, n> ymov = {1, 2, 2, 1, -1, -2, -2, -1};</div>
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<div class="line"><span class="lineno"> 101</span> </div>
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<div class="line"><span class="lineno"> 102</span> sol[0][0] = 0;</div>
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<div class="line"><span class="lineno"> 103</span> </div>
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<div class="line"><span class="lineno"> 104</span> <span class="keywordtype">bool</span> flag = backtracking::knight_tour::solve<n>(0, 0, 1, sol, xmov, ymov);</div>
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<div class="line"><span class="lineno"> 105</span> <span class="keywordflow">if</span> (flag == <span class="keyword">false</span>) {</div>
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<div class="line"><span class="lineno"> 106</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"Error: Solution does not exist\n"</span>;</div>
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<div class="line"><span class="lineno"> 106</span> std::cout << <span class="stringliteral">"Error: Solution does not exist\n"</span>;</div>
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<div class="line"><span class="lineno"> 107</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><span class="lineno"> 108</span> <span class="keywordflow">for</span> (i = 0; i < n; i++) {</div>
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<div class="line"><span class="lineno"> 109</span> <span class="keywordflow">for</span> (j = 0; j < n; j++) {</div>
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<div class="line"><span class="lineno"> 110</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << sol[i][j] << <span class="stringliteral">" "</span>;</div>
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<div class="line"><span class="lineno"> 110</span> std::cout << sol[i][j] << <span class="stringliteral">" "</span>;</div>
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<div class="line"><span class="lineno"> 111</span> }</div>
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<div class="line"><span class="lineno"> 112</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> << <span class="stringliteral">"\n"</span>;</div>
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<div class="line"><span class="lineno"> 112</span> std::cout << <span class="stringliteral">"\n"</span>;</div>
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<div class="line"><span class="lineno"> 113</span> }</div>
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<div class="line"><span class="lineno"> 114</span> }</div>
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<div class="line"><span class="lineno"> 115</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><span class="lineno"> 116</span>}</div>
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<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a></div></div>
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<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
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@@ -279,17 +297,17 @@ template<size_t V> </div>
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<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/array.html">std::array</a>< int, V >, V > &</td> <td class="paramname"><span class="paramname"><em>sol</em></span>, </td>
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<td class="paramtype">const std::array< int, V > &</td> <td class="paramname"><span class="paramname"><em>xmov</em></span>, </td>
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<td class="paramtype">std::array< int, V > &</td> <td class="paramname"><span class="paramname"><em>ymov</em></span> )</td>
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@@ -313,6 +331,8 @@ template<size_t V> </div>
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<dl class="section return"><dt>Returns</dt><dd><code>true</code> if solution exists </dd>
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<dd>
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<code>false</code> if solution does not exist </dd></dl>
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<p class="definition">Definition at line <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html#l00057">57</a> of file <a class="el" href="../../d1/d2a/knight__tour_8cpp_source.html">knight_tour.cpp</a>.</p>
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<div class="fragment"><div class="line"><span class="lineno"> 58</span> {</div>
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<div class="line"><span class="lineno"> 59</span> <span class="keywordtype">int</span> <a class="code hl_function" href="../../d4/d18/composite__simpson__rule_8cpp.html#a1b74d828b33760094906797042b89442">k</a> = 0, xnext = 0, ynext = 0;</div>
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<div class="line"><span class="lineno"> 60</span> </div>
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@@ -336,14 +356,9 @@ template<size_t V> </div>
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<div class="line"><span class="lineno"> 78</span> }</div>
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<div class="line"><span class="lineno"> 79</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><span class="lineno"> 80</span>}</div>
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<div class="ttc" id="acomposite__simpson__rule_8cpp_html_a1b74d828b33760094906797042b89442"><div class="ttname"><a href="../../d4/d18/composite__simpson__rule_8cpp.html#a1b74d828b33760094906797042b89442">numerical_methods::simpson_method::k</a></div><div class="ttdeci">double k(double x)</div><div class="ttdoc">Another test function.</div><div class="ttdef"><b>Definition</b> composite_simpson_rule.cpp:117</div></div>
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<div class="ttc" id="atower__of__hanoi_8cpp_html_af4cfc41e546f1f8d25f01e0804e8b61d"><div class="ttname"><a href="../../db/d3c/tower__of__hanoi_8cpp.html#af4cfc41e546f1f8d25f01e0804e8b61d">mov</a></div><div class="ttdeci">void mov(tower *From, tower *To)</div><div class="ttdef"><b>Definition</b> tower_of_hanoi.cpp:39</div></div>
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Here is the call graph for this function:</div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d1/d2a/knight__tour_8cpp_aaa47356d98676cf5315d978f741e29c9_cgraph.svg" width="244" height="76"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="acomposite__simpson__rule_8cpp_html_a1b74d828b33760094906797042b89442"><div class="ttname"><a href="../../d4/d18/composite__simpson__rule_8cpp.html#a1b74d828b33760094906797042b89442">numerical_methods::simpson_method::k</a></div><div class="ttdeci">double k(double x)</div><div class="ttdoc">Another test function.</div><div class="ttdef"><b>Definition</b> <a href="../../d4/d18/composite__simpson__rule_8cpp_source.html#l00117">composite_simpson_rule.cpp:117</a></div></div>
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<div class="ttc" id="atower__of__hanoi_8cpp_html_af4cfc41e546f1f8d25f01e0804e8b61d"><div class="ttname"><a href="../../db/d3c/tower__of__hanoi_8cpp.html#af4cfc41e546f1f8d25f01e0804e8b61d">mov</a></div><div class="ttdeci">void mov(tower *From, tower *To)</div><div class="ttdef"><b>Definition</b> <a href="../../db/d3c/tower__of__hanoi_8cpp_source.html#l00039">tower_of_hanoi.cpp:39</a></div></div>
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